SCIENTIFIC ABSTRACT DOROSHENKO, A. - DOROSHENKO, G.G.

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SCIENTIFIC ABSTRACT
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DOROSHM=,A.; UTCHIK,N. ?*J"*,~- " OUPT" television simplifying attachaent. Radio no.10:26-27 0155. (T slay in i on-Apparatus and supplies) (NIJU 9: 1) 25108 3/137/61/000/006/064/tW A006/A 10 1 AUTHORSi Semenov, Ir.V.,Doroshenko, A.G. TITLE: The Feltior coefficient and thermo-emf of the B12Te 3 'Illoy PERIODICAL: Referativnyy zhurnal. Metallurgiya no 6, 1961, 3-4, abstract 6Zh21 ("Tr. Odesak. tekhnol. in-ta, i khoic,diN. prom-sti", 1959, v. 8, no. 2, 68 - 73) TEXT- The thermo-emf c4 and Peltier heat of cylindrical Bi2le3 alley speo'- mens were measured. Me2surement of o0ware carried out on a conventional poteitio- metrical installatlonj the c=pensatlon method was employed to measure the Pel- tier heat, which exrl-,ided the effoot of Lenz-joule he&,. liberated in the specimen during -he passage of current thr3ugh it. 4 it folic-we frcff, data cn the direct aeterminati3n of c4,that dE/dT n 2.18 10- v/degree. and frcm m-it-arements of -4 ..he Peltier heat that r,,(-- 2.07 - 10 v/degree. It is concluded that the Tham- ecn c,:~rr6la-.icn P a _t T (dE/dT), where F !5 the Pei-.ior ooefficient, is well ap- plicat-le to the B12-T.3 alloy. N. Chericp-lekov [Mostraoter's notei Ccmple4.*q translaltion] Card 1/1 FIX-YOOp A.F.; DOROSHENKOO A.G.; GLOBIN,, N.K. *- - I Technology of the mamfecture of carbonated tomato and apricot Juices. Kons.i ovqrcm. 17 no.7t-11-15 Jl 162. (MIRA 15:6) 1. Odavokiy tokhnologichookiy institut piahchevoy i kholodillnoy promyshlennosti. (Carbonated bmrap$') Y~011WIPIENKOP A.G.; SAVFNKO, Yu.F.; DANILOV, A.A. S jernpor hnulnge of' coal in the making of' cron.%, rutn and cron- holes. Ugoll 40 no.4t56-58 Ap 165. (MIFA 180) 1. Shakhtp "Zamkovskayall No.2 tresta Kridiyevugolt (for Lorozhenko). 2. Kommunarskty gornometallurgichf-skiy institut (for Savenko, Dantlov). 6(4) PHASE I BOOK EXPLOITATION SOV/2774 Novaya apparatura radioveshchatellnogo trakta; Informatsionnyy sbornik (New Equipment of a Broadcasting System; Information Series) Moscow, Svyazlizdat, 1959. 56 p. (Series Tekhnika evyazi) 10,000 copies printed. Resp. Ed.: V. A. Fursov; Ed. :'V. I. Bashchukj Tech. Ed.: S. F. Karabilova. PURPOSE: This collection of articles may be useful to radio engineers, COVERAGEt The authors discuss the following broadcast equip- ment: FRA-1 panel of a broadcast control room; PFA-1 panel of a spoech-broadcast oontrol room; PTU-3 and PTU-4 portable transmi';ters; and SDS-1 announcer's desk equipment, No personalities are mentioned. There are no references. TABLE OF CONTENTSi Foreword Card 1/3 3 New Equipment (Cont.) SOV/2774 Meter, Ch. M. PRA-1 Panel of a Radio Broadcast Control Room 4 ThE author discusses the construction of a PRA-1 panel of a radio-broadca8t control room and describes the operation of various circuits In the panel, such as audio- frequency and signalling circuits, linear amplifier, frequency compensating circuit, pulse meter, control amplifier, attenuator, rectifiers and power-supply circuit. Baranovskly, B. K. PFA-1 Panel of Speech Broadcast Control Room 17 The author disatisses the construction of a PFA-1 panel of a speech-broadcast control room and describes various circuits in the panel, such ag the audio-frequency ampli- fication circuit, microphone amplifier, linear amplifier and the telephone circuit. A brief discussion of the soUnd level, signalling and power-supply equipment is also presented. _D9r9qhoLrLko A. I. PTU-3 Transmitting Equipment 32 Card 2/3 Now Equipment (Cont.) SOV/2774 The author discusses the construction and operation of a PTU-3 transmitter for transmitting speech and outdoor music prograins and describes transmitter components. Upkina, V. A. PTU-4 Portable Transmitter 41 The author discusses the circuit of a PTU-4 portable transmitter and its components, such as the microphone amplifier, pulse meter, control amplifier and the power- supply circuit. Meter, Ch. M. SDS-1 Announcer's Desk The author presents a brief description the announcer's desk and discusses its AVAILABUE: Library of Congress of the equipment of operation. 52 JP/TU14 Card 3A 1-14-6o UM/Chemistry - Decomposition Card .2/1 Pub. 151 - 4/37 Authors i Belyaev, I. N*p and Doroshenko) A. Ke Title i ~.Double deeompositLon of sodium and silver sulfates and molybdates in fusions Periodical I Zhur, ob, khim. 24/3., 427-432.. Mar 1954 Abstract Two binary system$ (N&IM004 - AQWI,and AgA)4 A92MO04) were investi- gitod for the first time by maw of a,*Viaua-1--p,.N1ythe method, The formation of continuous solid solutions vdth it iminimum of 21% NaP004 was observed in the first systems at 5460; the second system yielded a euteo:tio with 33% A92S04 at 4970* The crystallization surface of a ternary Na. Ag SC' M004 system was invostigated and it wus establish-id that this system betngs to the irrevoreibly-mutual systems with stable diagonal section and that the A&-ion has a greater effect on the stability of solid NG2(lloO4,SOl,) solutions than the Pb-ion. Data, regarding the equilibrium and double decomposition of above mentioned compounds, are included, Nine USSR refer- Crices (1873--1952). Tables; graphs. Institution t The V, M. Molotov State University# Rostov/Don 3ubmitted t Nf)vember 2, 1953 BELYAYEVI I.N.; DOROSMIKO. A.K. Interaction of potassium and silver sulfates and molybdates during crystallization from their melts. Uch.zap.RGU no.6U. 21?-223 159. (min 14: 10) (Systems (Chemistry)) (Salts) _AW_1W- AP50TA131'- SOURCE COW: tM/01,20/63/000/005/0180/01"' AUMOR: Vo _A. S Doroshenko, A. M. i EherepjAnov, V. M. ORG: PhYAiC10-ZMgiA441T1ng Institute GKAE,.Sukhumi (Fiziko-ttkhnicheskLy Institut TITLE: An ioniration manometer for the measurement of steady and pulsed piressures SOURCE: Pribory i tekhniks eksperiments, no. 3, 1965, 168-190 TOPIC TAGS: nanometer, gas pressure# pressure meaguring instrument qVA ABSTRACT: An ionization manometer for the measurement of fast changes in pressure of -neutral gases Ln vacuum chambers using quasi-stationary magnetic and KF fields has been developed using 2S3A ultraminiature triodes as sensors. The anode-cathode volt- age difference is 150 v, anode-collector voltage is 10 v, and emission current is 100-500 A a. The anode voltage originates from a 26-1 generator supplying at 5 kc: voltage pulseg,10 Atsec long. The presence of external fields makes additional calibration necessary. The manometer has a range from 10-4 to I Torr. Using a low ressure wave generated by a pulsed electromagnetic valve, the time constant of the new device is found to be less than 100 A see demonstrating the manometer capable of measurLng time variations in pressure. OrLS. art. has: 4 figures. SUB CODE: IE,EC / SUBM DATE: 07Aug64 / ORIG REP: 003 / OTH REF: 002 DDC! 531.7AA-131-7 02778-67- -.11W.Uh-likia) i ACC NR, Ap6()25246 SOURCE CODE: UR/0057/66/036/007/1211/1214 iAUTHOR: BesslisposhalkovgAeAs; Doroshonko#A~No; 8jmDnova.Ljj.~Ws; Cbelidze#ToYst ORG: none ITITLEs Obsertation of "curved!' spectrum lines in a pulsed high frequency plasma 1SOURCE: Zhurmal tekhnlcheskoy fiziki, v. 36, no. 7, 1211-1214 TOPIC TAGS: 'hydrogen plasmap rotating plasma, plasma velocity, ion concentration, ion temperature, magnetic mirror, optic spectrum ABSTRACT: The authors have spectroscopically observed the rotational velocities and the radial distributions and temperaturen of impurity 0+ and Si ++ ions in hydrogen plasma filaments. The plasmas were produced by a 1.5 Mr. pulsed rotating dipole field in a 6.5 cm eiianeter I meter long glass tube containing hydrogen at from 0.02 to 0.251 mm Hg and were confined by a magnetic mirror systeu with a mirror ratio of 1*57 and a- ,field strength in the uniform field rcg-A*oi. of 7.2 kOe. Additional stabilization was,,..- 'provided by skn up to 216 cusped octupolo field corresponding to a diameter of 2 cm. ' Two conditions of operation were distinguished: "direct rotation", in which the forces on the particles due to interaction of the high frequency currents in the plasm with the quasistatic field were directed toward the axis of the chamber,, and "reverse rotation" In which those torcem were directed toward the wall of the chambers The 011 4649.1 and SiIII 4552 A lines were observed with a spectrometer having a dispersion Card 1/2 UDC: 03.9oO7 - QZ?7"- 7- XCC NR& of 4 A/am and a resolution of 0#1 As The lines were very weak and were recorded with the aid of a wiltistage electron-optical In age converter. The radial distributiorAof the ion concentrations were determined (in arbitrary units) from the relative inten- alties of the portions of the lines arising from different parts of the plasma fiUmen the radial distribution of the rotational velocity was determined from the Doppler shifts of different parts of the lineal and the temperatures of the impurity ions were also daterminedo presumably from the Doppler broadening. In direct rotation the im- purity Ion concentration decreased more or loss monotonically from the axis to the per iphery of the plasma filament; in reverse rotation the ion concentration increased with increasing distance from the axis, passed through a maximum, and then decreased toward the periphery. The rotational velocity was also maximum at some distance from the axis* The rotational velocity was of the order of 10 6 cm/sec at about I cm from the axis. The direct rotational velocities decreased with increasing octupDle field strength, and the reverse rotational velocities increased with Increase of the octupol field strength up to about 144 Oe and decreased with further increase of the octupole field strength. With increasing oetupole field strength, the Ion temperature decrease in direct rotation and increased in reverse rotation. Ion temperatures up to 20 (unit not stated) were observed. The authors thank R,A,Domirkhanov'ard T.I.Gutkin for sug- gesting the problem ani for their interest in the worko Orig. art, has: 5 figures and 1 table. SUB CODRI 20 SUBM DAM 02Aug65 ORIO. REFs 002 OM REP: 004 Card 2/2 ymb 33456 S/126/61./O.L2/006/017/023 E073/E535 AUTHORS: Doroshenko, A.V,., Klyushin, V,V., Loshmanov, A.A. and Goman1kov. V.I. TITLE., Neutron diffraction investigations of MnTe PERIODICAL: Fizika metallov i metallovedeniye, v.12, no.6, 1961, 911-912 TEXT.- MnTe was produced by vacuum sintering at 800% of a mixture of 99.8% purity Mn and 99.99% purity Te. the structure and the composition of which were checked by X-ray analysis. Then, after additional crushing, the powder was pressed into a thin- walled alum1nium cylinder 27 mm high with an internal diameter of 9.6 mm,, The table herewith gives the calculated and experi- mentally determined values of the Bragg angles and of the corresponding interplanar distances. The magnetic reflections from (001) under the angle of 4*401 corresponds to the constant c of the crystal lattice and, consequently, along the c-axis the parameter of the elementary cell coincides with the parameter of the crystallo-chemical lattice. Furthermore, the appearance of this reflection indicates that the magnetic moments of the Mn Card 1/1 1 33456 Neutron diffraction investigations .... S/126/61/012/oo6/017/023 E073/E535 atoms are located in the basal planes or form a amall angle with these planes,, A simplified model of the magnetic structure corresponding to the magnetic reflection from (001) will be the structure formed by ferromagnetic layers in the basal planes with magnetit moments that are perpendicular to the c-axis and anti.- parallel as regards the magnetic moments in the adjacent basal planes- The presence of a magnetic reflection from (101), together with a reflection from (001)., is natural for such a mod-31, However, in this ase there should be no reflection from (002). To get more accurate information on the magnetic structure of MnTe, the investigations are to be continued, Acknowledgments are expressed to A. K. Kikoln, B., G. Lyashchenko, D. F. Litvin and N~ P. Grazhdankina, There are I figure, I table and 5 referenceax 2 Soviet-bloc and 3 non-Soviet-bloc. The English- language references read as followss Ref.3: Kelley K.K. J.Amer. Chem.Soc.., 19'59, 61, 1,, 203; Ref.4t Greenwald S. Acta Cryst,, 1953, 6,5,396. ASSOCIATIW, Enstitut fiziki metallov AN SSSR (Institute of Physics of Metals AS USSR) SUBMITTY3 June 3, L961 Card 2 117 Z__ DOROSHENKO, A.V. F.ffec,t of ordering on the saturation magnetization of Ni Mn alloys. FTz. met. i metalloved. 15 no.P':936-937 Je .633 (,MM 16-7) 1. Institlat fiziki metallov AM SSSR. (Nickel-manganese allovs--Metallograph7) (~~gxietizati~~j SIDOROV, S.K.; DOROSIIENKO, A.V. Dependence of the mean magnetic moment of the alloy atom on the manganese content in disordered nickel manganese alloys. F-Jz. met. i metalloved. 18 no.6:811-820 D 164. WIRA 18:3) 1. Institut fiziki metallov AN SSSR. SIDOROV, 6,11*1 DOROSIONKO, A.V. Npindence of the -magnetization of Makel-mangarla" alloys on the composition and order in the distribution of aftax, hs., wt, i a6tallovod 20 nasD4444 JI 165, (MIRA 18111) 1. Inotitut fiviki metallov AN OSSR. sov/86-58-10-35/4o AUTHOR: Doroshenkop D.F., Ben Engr Lt TITLE! Instrument Storeroom (InstrumentalInaya kladovaya) PERIODICAL: Vestnik vozdushnogo flotaj 1958, Nr 10, pp 84-85 (USSR) ABSTRACT: The author recommends that a large number of differ- ent instruments usod in routine maintenance work on aircraft should be kept in special storerooms. The instrument s0orerooms should be Bet u in the subunits of technical exploitation units (TECh~ and a mechanic put In charge of such a storeroom. Two photos. Card 1/1 W7T 71~y CAV-(W-R! W . J -) UR RJ Gi PUB. STRhCT USER s Cul tivaW Planta. Gratnz. Legumes. Ia7b3ivI.# No. 3j Tropical Cereals. 1959j, No. 10943 x Donshanko. E. Y. On Different Methods of FaU Cultivation of the Soil to ByuL nauk. Infonn. pD zerAlerobstvu, 1958j. No. 3.. 7-10 No abstract. RD. 1/1 -49-- DOPOSHVIRO, F.. sinoptlk When it I LvJng th I ng aticr I ['I ceii I o fo~rvi, , . Crazhri. ~tv, I I,~ no. 5: ~2-23 My 162. (:,imA 18-6) L. A-i lame teorologl cheskaya stant3iya Surnakogo aeroporta. 5SI.Sas. :4 utcrupt is ILUI(je to ni(,re A&4jLkattly thextAling of thursder Wtowin; the fir-I ral. lkdki~tioai;J th!~ qomid Ir,mi the cluu(Nrannot elpitin v6y the rolft; ti-,,ty tn -orjdt- 0; -in Ifir Initial (flund"r I Lip lhe lw~,r -....-4prct4 1~.v ci~., -tic lerigth of 6c lightflif4g- sir-'k-P mky taitge fr~4.t IlWje.~l f~~ ~C.efnj nalural lh it t te ~aft-,fa- 1. A DOROSHENKOP F.I.. Cleaning railroad cars in a mine with a hydraulic giant. Ugoll 39 no.10:34-35 0 164. (MM 17:12) 1. Urgallskoye shakhtoupravleniye. 0.6-0 0 0 AUTHORt Doroshonko, F. T. S/050/60/000/04/006/018 B007/BO17 TITLE: On the Causoe of the Development of Squalls PERIODICAL: Metoorologiya i gidrologiya, 1960, Nr 4, pp 28-31 (USSR) TEXT: Squalls usually develop under huge cumulus rain cloudso In this article the author given a now explanation,of the descending notion of air at the rear of the shifting rain- and cumulus rain clouds, of the jumplike pressure rise, and of the extraordinadlyincreasing wind velocity on the earth surface. A vertical air motion occurs during the development of a rain cloud followed by a cumulus rain cloud* Thit wind velocity is assumed to increase with height in the air surrounding this could. In this case, the ascending air motion inside or outside the cloud) will penetrate one air layer after the other ~which move with increasing horizontal V01DOity). This ascending air column may have a large diameter (of from none motors to several kilometers). It has a large mass andp thereforep a higb onorgyp but will have a horizontal velocity at the respective level, which is smaller than tho wind velocity. Thueq this air column retards the motion of the surrounding air considerably. This horizontal air current of the atmosphere hits the seconding current, its own velocity in Card 1/4 OU the Causes of the Developmiont of Squalls S/05 60/000/04/006/018 B007YB017 the rear is reduced, it &OCUAIU1&tes there, -and evades the hindrance partly from 'the eldev from above and from belowu Duit to thin retarding effect, the pressure in the rear of the atoonding air curent riaeac Pressure dropeg however, at the front of the ascending air current. This gives rise to a pressure gradient that warrants horizontal acceleration of the asoending air. Thus the velocity at which the ascending air In shifted in the horizontal directiong is nearly as high as the wInd velocity at any now levela Nextp the author perforn an approximate calculation of the pressure gradient within the region of intense ascending motions. Theme calculations show, that great pressure gradients are produced (of the order of several dozen millibars per 100 km) due to the inertia of the ascending air (on which pressure is exerted by the wind) within the region of Intense ascending currents when the mind velocity changes with the height. These gradients which axe produced only on small surfaces, cannot be determined by the existing network of meteorological stations. Their existence is proved by the great pressure rise on the barogram and by the equally mind tK Card 2/4 On the Causes of the Development of Squalls 8/050/60/000/04/006/018 B007/BO17 the velocity of which exceeds that of the wind gradient according to the synoptic chart for the region concerned. The baric gradient found in the region of ascending currents is superposed by the additional pressure gradient which determines the wind conditions at the respective spot for a short time. Par- ticularly favorable conditions for pressure rise and descending motions in the rear of ascending currents (of clouds) are found on cold fronts with large cumulus rain clouds. Though precipitations intensify the descending motion of air in the rear, underneath the oloudg squalls occur under the passing cumulus clouds even without preoipitations. Formula (5) for the bario gradient is derived. Herefrom it may be iieen that in the case of a squall the bario gradient and, consequently, also the wind velooity are proportional to the following quantities: the air density at the lavel with the highest velocity of the ascending motiong the velocity of the ai3oending motion, aAd the local variation in velocity with height at the level of highest velocity of the ascending motion. The gradient further depends on the horizontal and vertical tlt_~ Card 3/4 On the Causes of the Development of Squalls S/050/60/000/04/006/018 B007/BO17 extension of the zone with ascending motion,,and on the stratification of the air and the specific air humidity. LK Card 4/4 A/ j-, 4 28431 :3/185/61/006/002/003/020 D210/D304 1~1 (00 0 0 6r - AUTHORS: Vatset# P.I., Vlasenko, V.H,.. Voloshchuk. V,Y,, Doroshenkq & _,_ Kolesnykov, L.Ya., Nikitin, V.O., 'gi~_TU_napezyan, S.& TITLE: A diffusion cloud chamber PERTODICAL: Ukrayinalkyy fizychnyy zhurnal, v. 6, no. 2. 1961, 168 - 173 TEXT: The authors describe the construction and operation of metha- nol in an air diffusion chamber, This chamber was built as an expe- rimental model for a larger chamber for use with a linear electron accelerator. The chamber (Fig. 1) has a working diameter of 26 cm and an effective height of 6 cmo It is made of stainless steel an,1 consists of three sections: the lower cylinder 1, the cone 2f and the upper eylinder 3. The internal diameter of the lower cylinder is 30 cm wid of the upper 22 cm, and the height of the chamber is 80 cm. At the base of the chamber there is A -opper condensation disc 4, whose surface has been chemically i.idelkened. This disc is Card 1/5 28101 S/185/61/006/002/003/020 A diffusion cloud chamber D210/D304 cooled by passing liquid nitrogen through a coil (5) soldered onto ,.he bottom of the disc. A glass cylinder (6), 26 cm diameter, 10 cm high, and 4 mm thick is held firmly ELgainst the copper disc wltri t-he copper oonep thus ensuring a good temperature contact, The tem- Perature distribution in the conical section is effected by elec-.ri- cally heating the flanges of the cone, the lower flange temperatu- re corresponding to the methanol temperature. The cone and the .Lower ring is separated by a heat insulator 7, the bolts (8) being similarly -insulated. Thermocouple and electrode connections are made through the insulating ring, the screen 9 beirir connected by glass rods to the electrodes. Two windows (10) made from organic glass are aituated diametrically opposite each other for illumina- ting the chamber space. The methanol is fed to the chamber throvgb the lead 12. and it is held in the groove 11 of capacity 300 cO, the evaporation being enhanced by filter papers placed in the gro(,- ve, The methanol temperature is controlled with a thermocouple wh_,ch enters the chamber through 13. Two windows (14) are provided for photo6rapliing the wor-king volume in,! one for visual ob-, 21431 S/185/61/006/002./003/020 A diffusion cloud chamber D210/D304 servation. The upper part of the chambe:r is held at a higher tem- perature to prevent condensation of methanol on the windows which can cause a high background, The operation of the chamber is con- trolled by automatically varying the liquid nitrogen flow rate, the methanol temperature, and the temperature of the upper flange of the lower cylinder. The chamber was tested with an air and me- thanol filling at 1 and 3 65 at. It could be operated at a bottom temperature of -45 to -70 0 and a methwiol temperature of 10 to 300C, however the most satisfactory temperatures were found to be -50 and 206C respectivelyp giving a temperature gradient in the working space of 7 deg/cm. At an aL-.ohol temperature above 200C, the droplet background was high; when t?1e temperature fell to 0 to 100C the vapor flow was insufficient for satisfactory operation of the chamber. The authors have given In this paper a good des- cription and diagrams of the supporting equipment for pumping the liquid nitrogen and feeding methanol to the diffusion chamber. The authors state that they are preparing at the moment a larger chamber with a diameter of 30 cm and a working pressure of 30 at. Card 3/5 2?,431 S/18 61/006/002/003/020 A diffusion cloud chamber D210YD304 There are 6 figures and 5references: 3 Soviet-bloc and 2 non-Sov- iet-bloc. The references to the Engliah-language publications read as follows: A. Langsdorf, Rev. Sci. Instr., 10, 91, 1939; Shutt, Rev,, Sci. Instr., 22, 730v 1951. ASSOCIATION: Fizyko-tekhnichnyy instytutp AN URSR9 m. Kharkiv (Technical Physics Institute, AS UkrSSR, Kharlkov) SUBMITTED: July 1, 1960 Card 4/5 DORD STOLYAROVA # To. L. 1 0. G. Delayed-op ideh6e d"Ice 10-10 to loil- sec.-Sboi..'~auch. (Time measwoments) for measuring time intervals f~cu rab. MIFI no.2:141#"154 160. f 27699 Sjfl2o/61/O0O/OO3/Ooq/o4l cV62C j Z032/Z314 AUTHORS: Doroshenko, G*G. and Stolyarova, YeeLe TITLEs A Fast-niu-tro-n-Vointillation Counter with a Low y-ray Sensitivity PERIODICAL: Pribory i tekhnika eksperiiiienta. 1961, No- 3, pp. 69 - 71 TEXT: This counter was demonstrated at the 1960 National Soviet Exhibition. It has recently been reported (Raf. 'L - R.B. Owen, IRE Trans. Nucl. Sci., 1958, NS-5, No. 3, 1981 ~Ref* 2 - F.D. Brooks - Nucl, Instrum. and Method., 1959, 4, 151) that the scintill- ation decay time for neutrons is greater than for y-rays by a factor of approximately 2. In the present counter this time difference is transformed into an am-litude difference; the P basic circuit of the device in shown in Fig. 1. The fast- neutron scintillation counter consists of a stilbene crystal (30 mm in diameter and 30 mm thick), an Q3y_.;3,, (FEU-33) photomultiplier, a discriminator consisting oT two germanium Card 1/5 27699 S/12o/61/ooo/003/oo9/o4l A Fast-neutron .... Z032/-9314 diodes,and two cathode followers. Since the decay constant for the slow components is Oe3 )Ls9c9 the time constant of the output RC chain was chosen to be 3 pseco The discrimin- ation level in determined by the bias,applied to the first diode. The key posi.tioA'-1 gi*oq the integral count of fast neutrons and y-rays with the photomultiplier noise cut off. Wi:t'h the key in positidn,2,the device records the intensity of fast neutrons with the y-rays out off. The time-to- amplitude-transformation is achieved by operating the photo- multiplier in such a way that the magnitude of the output voltage pulse in independent of the energy of the recoil protors and electrons where, in the first caseq it is equal to about 100 Vand in the second, to 200 V. It is thus possible to avoid the use of an amplifier and to discriminate against the y-field with the aid of the simple discriminator shown in Fig* 1. Fig. 4 shows the y and neutron calibrations. The nunbers next to the experimental points denote the max- imum energy of the recoil protons in MeV. The numbers on the Card 2/5 A Fast-neutron .... 27699 1--1' " S/1.2o/61/000/003/009/04i E032/E314 y-curve refer to the maximlim energy of the Compton recoil electrons. Pxperiments led to the follnwing results: lower neutron energy threqhold 1.2 MeV-, aMciency for fast neutrons %Po - ue source) -- 75; efficiency for y-rays (Po - Be source) _0.0l9&';s)PerYP.ssible load Unteg'ral count of fast neutrons and y-ra 10 p*p.s. In these experiments the rocording device was the generally available V) -- 1: (PS-3.0000). However, the device can easily be made portable by the use of transistor techniques. There are 4 figures and 11 references: 1 Soviet and 3 non- Soviet. The three 11-.nglish-language roferences quoted are: Refs. 1, 2 (quoted in text); Ref. 4 C.J. Taylor, W.K. Jentschke, M.E. Remby, F.S. Eby, 11,G. Kruger - Physe Rev., 1951, 84, 1034. SUBMITTED: July 9, 1960 3/5 89262 3/046/61/025/001/026/031 B029/BO63 AUTHORS: Doroshenko, G. G. and Stolyarova, Ve. L. TITLE: A method of separating pulsen caused by fast neutrons and gamma particles by using the space charge of a photoelectron- ic multiplier PERIODICAL. Izvestiya Akademii nauk SSSR, Seriya fizicheskaya, v. 25, no. 1, 1961, 152-156 TEXT: The recording of fast neutrons in the presence of a gamma back- ground is known to be very difficult. It has recently been found that the effective duration of neutron emission is about twice as long as that of gamma emitters. The present paper reports on two methods making practi- cal use of this interesting property of some organic scintillators. Ordina- ry photomultipliers with a linear characteristic have been used in both methods. Twc puls?a were taken from the photomultiplier, one from the anode and the other from the last dinode. In the first method, the pulse taken from the anode is proportional to the scintillation amplitude, while the pulse taken from the dinode is proportional to the total light yield. The Card 1/6 A method of separating pulses caused ... 3/048/61/025/001/028/031 B029/BO63 pulses pass through amplifiers and stretchers, find then they are trans- mitted to the plates of the oscilloscope tube. One of the lines to be Been on the screen of the oscilloscope corresponds to the neutrons, while the V~ other corresponds to the gamma rays. Though this result is very illustra- tive, it can hardly be used for measuring the fluxes and spectra of fast neutrons. A simpler electronic circuit is uoed in the second method. In this case, lines can be separated by a proper choice of the elements and operation of the circuit. For practical purposes, however, all elements of the circuit must be exactly adjusted. Besideag the signal is very weak and therefore needs considerable amplification. The method discussed here is based on the principle of an artificial apace charge at the last cascades of the multiplier, which serves the purpose of separating the pulses caused by fast neutrons and gamma quanta. Fig. 2 s.hows the circuit used in the second method. Stilbene ahoirs that with a short period of emission, the influence of a space charge is much stronger although the light yield is considerably lower. The time difference is probably changed into an am- plitude difference by means of the space charge. The time constant of the RC circuit of the output must be sufficiently great. Fig. 4 shows the separator. Theemitted negative pulse is shown on the right side. The Card 2/6 UYzU e A method of separating pulses caused 5/0418/61 025/001/028 31 B029/B% ceparator has yielded good results so far. Fic. 6 shown the amplitude dic- tribution of pulses emitted from,,a Po-BD couz-ce. The authors examined 25 otilbene crystals and 12 -M-5 3 9phot omult i pliers. All crystals yielded t1je same resultd. The separator makes it possible to -construct a simple device for measuTing the fluxes.and spectra of fast neutrons and heavy iona in the presqnce of an-!Lppreciably strong gamma background. This is tNe reproduction of a lectura read at the Tenth All-Union~Conference on-Nucle .6 Snectroscgoy, Moscow, January 19,27, 1960. There are 6 figures and 4 non-Soviet-bloc references. Lou-end to Pig. 2: Brooks circuit: 1) sointillator;yd 2~ photoolectronic multiplie-, 3 separator; 4) amplifier. In the upper left-hand corner one JL may see the shapes of pulses 2- caused by neutrons and garrma rays at point A. Card 3/6 __W 89262 A method of separating pulses caused 5/048/61/025/001/028/031 B029/B063 Legend to Fig- 4: 1) scintillator; 2) photoeloctronic multiplier of type 'P-)Y-33 (FEU-33). A7 UL Card 4/6 09,-62 1 A method of separating pulses caused_....-- S/04 61/025/001/028/031 3029 YB063 Ur 69262 A method of separating pulses caused B/048/61/025/001/028/031 B;)29/BO63 Legend to Fig. 6:' 1) amplitude distributioa*bf lead layer (12.8 cm); 3) neutrons v (-~, I Me )I.II - energyj If so P. Y Fi~ 6 pulses from Po-Bo source; 2) dto. with a dto. with'paraffin (1!i.8 cm); I - only from fast from gamma quanta and recoil protons of low Card 6/6 PHASE I BOOK EM)ITATI(I SW/5?l? Moscow. Inz~ansmo-tfixicheskiy institut- Pribory I matody analist isluchenly; aboralk nauchnykh rabot, vyp, 2a (Appa- r&tua and Methods forAbs Analysis of Radiatim; collection of scimatmo Papers, to. 2) Moscow, Atomisdat, 1960. 166 V. 4000 copies printed. Sponsoring Agencyt Minioteralvo vyeshego i sredaego spetsiallcoeo obrasovaniyz RSFSR. Moskovskiy Inzhtnerno-fisichaskiy institut. Ed. (Titlev page) i U., L. Stolyarova, Candidate of Physics and k~thmmatias Tech. Ed'.1 S. M. Popava.- N% PURPOSEs This collection of articles is intend-sd for specialists in nuclear physics, doximAtry of nuclear radiationsp and shielding. COVERAaEs The articles were prepared by scientists of HIPI (Moscow nVoica and Engineering Institute) and presented at the 195? conference 4f the Institute. Brier annotations to the articles bays, been Locludsd in the Table of Contents. go personalities as menticnede Asteromes follow each article. Card 1/,$ Apparatus and Methodelbr the Analysis (Cont.) SOV/57.17 Stolyarovaj Ye. L., and G. G. Doroshenko. Delayod Coincidence Unit for Mass- 1110 uring Time,lnterds of 10-10 -10 ago I" This unit has greater possibilities than other known units. Use of pentodes with secondary emission under special conditions permits blocking of the limiter with one photoolootron from the photocathode. The characteristic impedance of the delay line (150 instead of the usual 92 ohm) enhances the amplitude of the pulse for the incidence selection. At resolving time 20r = 2.5 nsec the recording officiency is 60%. Nelipa, N. F. and V. A. Feaktistov. Determination of Small-Phase Pi-Meson Scattering by Nucleons 155 A general equation in given for the polarization of recoil nucleons emerging during the formation of pi-mesons by photons. Irodov, 1. Ye. Resolving Power of Analyzers With a Radially 3ymmetric Magnetic Field 157 Problems relating to the resolving power of analyzers are discussed. Card V8 I!TrETV.'AT'1rO'1A1 AlrKIC ENEFGr AGENCr, (IAEA) sy'-'Pusium on !,eutrcn Detection, Dosimetry and Standardi. ation - Uarwe1l. Englands 10-1L December 1962 V. I., BAPABkMN, 1. R., and ZMMYUSHM, I. V. - "A new met!~.Lxl rux- btudlying cont'nuous fast neutrcn 8Wct-ra - the counting efficacies method' (Section 1.1. (10) DCRCSMIM G. ~ and Te. L. S7%17LBMA is ~~ Cain ig6c was a member of the ',!~~sccw Eng-4-reering physics 1natitutel "A nev methcd for se;aratlng pulses --rom fast neutrens and Y quanta" (section IM) IVA!=, V. I. - "A modified Procedure for using the Hurst type ;roportional counter fcr dcmimmetry of =-4xed Y-neutron radiation' (Section III) Vadl= Paylovich - "The spectro- method and the attenuati om-curve a.-jalysis methcd for determi.-Mig the activity or t~--reshcld indicatc.s (Section 1-3.(2)) S-xL'WCVAYA, Ye. L. [It 1960 vas a member. of the Moacaw Engi neerin& PhYs les Institute) crportunitie3 for tbeiz u3e in neutrom dorinetry" (section II~) Za,-LZZY.',S.K1, It. 'LZI~-- =-C! !s listed in the rrOC;rcLr- as a L13SR autha*; he =ay, however, be I-_, e C Z -.-S 1 av ZM 16 "D j n 1958 'U as at War-au UniversitY, Poled] - "Peccrbination rnetj.~d of lin-2ar ener&ytransfer (LE:T) ceter-ninatIcn of =ixed adiation" (3ection V) zc~!"Y'-Tfaa""' V. G., DO MW and )2:F1I?'!a"..KO' B. A. ~R~~Pulse- distrItutions andco-=t1ne efficiencies of a fp-3t-rcutrcn kcintilation detector" (Sect,-on 1.2) 84 AW100110141022 3 102/31 Aff THORS: Glaga~#vt` To lot :711yUshkin, L Afanaslysvp Ito 16 TII~LX Calculation, of -Ai -,ioulit" a ' 8 iefiiif~Kdy recording far a'.664ctar. with an emgonto crystal book ly-'Ihs it tal. topro4y 4ow1nowl SOURCK: Moscow ,i Insfighorio, 41S.Ac a oh sly lo-4962, 90-99 t zaahchity at I. 1u. 0 $,ft0# TEXT: The Woun-ting ef flciin~y-; j ~~ji) - fs~44dulatsd top a fast-nomirm ,detector with a 30 am-thick.stiltine., pryital as 'vointillatoij -"R Is ill* neutron energy and B the. recording. thrishold, I.e. the lowest a4aVrow energy recordetle* In atilbene-.04 nimtroni.are itcord*d via the recotl protona or via nual~oar reactlone. vl%U earlbon or, hydragem. The carbon nuclei play. an import'ant-Part Dinas, ,-their density In higher (0 Nj2)1*&m4 14 in the high-energ y range the tat I (U,o) 'Inter'station orous-seation Is of the 'order ofthat of (n,P) most t:ring. * - ObIt LpIte seat Aering - offeets, are negligible for sedium-*Is* crystals. , In first approximation (single -scattering) L, fe-calculated from- the, 'Coll Ioloa'pro'ba'billty' Card 0 .6102162100010011014 1022 Calculation of the counting 21021DIS6. P) (Ee) e7 as (Ej dx for the distance 1-x from the left window. Since E,(%,B) P, (%)da P,(Eo)aB. (where a 3/3,#-thi neutron, anora'fragsion retained after the f iret collision, I being -the energy of Aht scattered nelitron) and aID-(E one- ostatog "A6 'Where + % (n and nC being the nuclear concentrations of 3 and C; u(s) ttie (sop) scattering cross-nectioal. #,(B).the total (n#0). sciattering 4~rove.veetionj Card 2/3 8/6 W"0100110#41011 Calcu.lAtiOn Af GOVating In the'oas* Of; AoubX41 116st faring is obtained- ber~.~ i.*.:w I W. 2/2 from 0 oompartimm of the onargy. 061iind6nuen .0i'li-A 'and ~*,.Neev that at* low "'Olpsiss t C 6urves. -The "to of C 21s. raftleed tht E~ curves Us higher ..with 'increasing., Asu tro'n 'afterIWO 4M. for -0tiliv nistross Wh* so"*@ coindide*': %# offteCof,,~. 4'c~ubli~ "-seat terlig in-6roasve with S. 2b* too"I of, the t-a'arios. ar's'gMe.16 4h*:r*vonance.~bairavS*r of.ibe (at*). are'ar*.5 fign .4~cat Oring oro,4-seOtioni. ?h j ar d.- 3/3 ~5458 8/892j62/000/001/021/622 B102/Bie6. AUTHORSt -D=.o "hnko 0& Oj Shatalovt 0. A. a TITM Separation of-the pulses from fast neutrons and gamm quanta in Fifast-neutron time-of-flight apectrome,UX. VC SOURCEt Moscow* Inshenerno-fizioheskiy institat. Vbprosy Oosimstri i sashohity ot isluoheniyo no. I f 1962f 137-149 TEXT: If the neutron pulses, are aeparaieA from the gamma pulses AN SSSR, eer&fit,#25jnd.1052-1q61) tho'conetruction of a fvat-neu*on time-of-flight spectrometer can be considei-ab '1y eimplif ied. Such instrument is described. ' It operates with two transmitters whicli ii 33 (FEU-33) photoelectronio multiplie:re with otilbene crystal 10 mm-and 30 - 30 mm). The f irat i9 a usual transmitter '(ill 0 operation)l the secoind eerves.,for pulse separation. The block dia;al~i of the spectrometer -and the circuit diagrams 6f the transmitters$ the, pulee-forming unit and the converter are given and discussed in detail.&' The characteristics of the mixqr tube were investigated under various operational conaiiiona. The spectrometer was calibrated using a Card 1/4 162100010011~211022 51892 Separation of tho pulase from fjjt B102/BI86 6o Cc source placed in the'middle between the two transmItleral in.y-y was 3.14,10-yeea.. coincideno e measurements the ti .me resolution ar checking the opeatrometer the neutron OpectrUin of a Po-Be source ranged I with L-I m was determined. The neutrone cot the Po-Be source were produced in the reaction Be9 4 13 12 -~He i~* C6 -* C6 n +(O-Ei) 'Where the react&iom iB th 0 excitation' energy of the 0 12 nucleu energy Qn5,75 Mev, and E AV ~~ 6 Since EO.110* El-4-43 Mev ana LINVI.65 mov, -khree neutron groups Pould be, 2 expected. However only the. first lqv,11 de-excitee via gamma. emli'41o E 2in at least 99348-via a-emission, onl;r the ~ 4-43-Mev group. was recorded. The spectrum recorded was not Ji- i h eorete but continuous, wh a is attributed to changes of the cc and neutron energies due to ionization losses or differences in the direction of emiesionool, The results are shaft,.' in Fig. 8, compared with theoretical calc4lations dnd foreign reaults' There are 9 figures, Ca rd 2/4 62gOOO/OOI/O2I/OQ2,! q/6? Separailon of Ihe pulsoo.frow fast ... BIO I X L L Fig. 1. Block diagram of the apectroneter.. limiterl 111,291 pulne-forming circuite; 1,2 amplifieral - delay It'neel J13 I discriminator, n converterl A mIti- 1 t2 channel analyucr. Card 3/4 3/89%2,62/000/001/021/822 Separation bf the pulses, trom fast B102 I" 7 8 0 is 0 Fig, 8. The Po-Be neutron apectruta (2) compared 'with the th*oretioal "Pectrum (3) obtained in qua litative approximation, and with the sp*otrus (1) obtained from photoomulsion experimente (PhYs. Rev. 78*7991-1950). .-Card 4/4 DOROMNIM a. G. F02i 8/0&0/62/013/006/019) 410;73w AUTHORSs 0. T. end K. R. TITLZs NAUGhnay konfor*ntelya Maskovskogo inshonerno-fisich skog Institut: (scientific Conference of the Moscow Sagins:ring's Physics Institute) 1962 Atoassays, onergiya' v.. 13, no. 6, 1962, 603 - 606 PERIODICALs I TEXTs The annual conference t:ok place In-M-ey 196 with more than 400 delegates participating. A review is given of these leatur*m that are assumed to be of Interest for the readers of Atcanays. anerglya. They are followings A. 1. Loypunakly, future of feet rsaotoral A. A. Vasillyovj design of accelerators for superhigh stargion7l 1. Ta. Ponoranohuk# analytioityp unitarity, and asymptotic behavior of strong interactions at high energisel A. B. Mi#dslg phenomenological theory for the many-body probleal Yu.'D. Fivgekly, deceleration of medium-energy Gotiprotons In afittero &.7-17.1os a. Y&. A. losilevskirs theory of the Mdesbauer effeatj H. 1~ Ityassnovs, theory of Ionleation losses In mombonogeneous mediuml To. 3. Ivanovj A,A. lukhadset h-f corAmatIvIty of-subaritical plassal ~Qard_1/4 7. 3/089j62/013/006/019/027 Sauahnsys, konforentsiye,... B102/BI86 Ye. Yo. Lov*tskiyt A. A. Rukhedso, electromagnetic waves In nonhomogentous plaamal Yu. D. Kotovj 1. L. Rosentall, the origin of fast cosmic amonal Yu. M. Iyanov, muon dopolarization In solidsl V. 0. Tarlsmov, Yu. M. Orssbh4, B. A. Dolgoshvin, 1. 0. Xirillov-Vgr3,umov, T. S. Roganov, 1. V. Samoylovt ;4' oapturs by various nualsil V. 3. J)emidov, V. 0. Kirillov.trgryumay, A. Ks Ponosovp V. P. Protasovp F. M. Sorg*yov# scittering of x" mesons at 15 May in a propoA* bubble choub,pri S. Y&. Nikitin, V. S. Aynutdinov, Ya. U. Solektor, S. M. Zombkovokly, A. F. Grashing muou produotion In It'p interaotional B. A. Doliosheing sport ahamberal 1. 0. Tolkov, T. X. Lyapidevokly, 1. M. Obodovskly, study of operation of a oonvootion chamberl K. 0. Finogenov, produation of square voltage pulses of high amplitudeal 0. ff. Alskeskov, problems of oolor visionj T. K. Lyspidovokly, relation between number of rooeivers and number of Independent oolorej Ye. U. ludryavtoov, N. 1. Sobolov# j*. 1. Tisongausen, L. X. Tunitoklyp, r. 8f. Faysulov, determination of tho moment of *l&otron transition of 'oIllator forces and the widths of the Schuhman-Rungs bonds of molsoular oxygenj Nr To. Gavrilov, A. V.- 2h&rJ.kov# T. 1. Rayko; decomposition of the volume charge of Intense Ion T. B. Troshin, measurement of neutron spectroJ3. U. Daroshooko--ijew methods of fast- iW-V- -~-logyj. Rd M. Toronkay, outroq recordingi T. 1. Ivanowg doie a ry-"ftimo S/796/62/000/003/012 1019 AUTHORS: Do'rodhenko, G-G-# Stolyarova, Ye. L. TITLE: Phytical fundamentals of the design of high-effectiveness fast-neutron detectors. SOURCE: Mosj."ow. Inzhenerno-fiziche skly Institut Pribory i metody analiza fzluc:heniy. no.3. 196z, 115-1Z4. TEXT: In fast-neutron flux measurement two difficulties are encountered: (1) Neutral particles can be registered only via secondary charged particles (recoil protons and nuclei, nuclear- reaction products); (2) fast-neutron fluxes. as a rule s are accompanied by gamma- radiation, so that the problem of the -y-background cut- off cornea to the fore. Existing measuring methods are criticized for their low effectiveneBs of registration and relatively low counting rate (hundreds of pulses per second). Scintillation sensors with organic phosphors (stilbene, anthracenes liquid scintillatorso etc.) with im elevated 1-1 content afford a 10-40% effytiveness in the registratiDn of fast neutrons and a counting rate of the order of 10 and 104 pulses per second. Formerly their use was limited by their lower light output for protons than for electrons at identical parV,cle energies. Recent discove'ries of thu interesting property of certain organic scintillators, in which the character of the ..Physical fundamentals of the design of ... S/796/6Z/000/003/012/019 scintillation depends on the type of the exciting particle (cf. Brooks, F., Nucl. Instrum., v.4, no. 3, 1959, 151; Wrlght,G., Roy. Phys-Soc.t Procs, vo 1369, no. 435, 1956, 358; Brooks, F., Progr. Nucl..Phys-,no. 5, 1956, Z5Z; Owen, R., IRE Trans. Nucl.Sci.pv.5. no.3, 1958, 198) offer promise of a practical separation of fast-neutron and y-quanta impulsos In a high-effectiveness sensor. The Kallmann- Brucker work (Phys.Rov.tv. 108, 1957, ll?.2) on the shape of the zcintillational pulses of organic luminophores is reported, its is F.Harrisones discovery of slow components in the scintillations of stilbene and anthracene (Nucleonics, v. IZ. no. 3, 1954, N, Wright' a findings (see above) of different fluorescent life time (FL) for a-particles (53 nsec) and electrons-(3.1 noe-c) in anthracene't and Owen's experi- ments (see above) on the difference in FL of the slow components of organic phos- phors. The fluorescence in organic scintillators can be visualized as a sum of several exponential componentas namely, one "fast" nsec component which produces 17 8016 of the total light output and one or more "slow" components with FL from 0.1 to 100 jisec. Although the FL of the fast component is independent of the nature of the exciting particle, inclusion of the slow components in some organic scintilla- tors affords a distinction between greater offoctive FLI.s for a proton and shorter FLI a for %an electron. The FL differentiation Is attributed to the different duration of the processes initiated by ionized molecules (M+) and excited molecules (M*), namely, recombination and return- to- ground- state photon emission, respectively. Card Z/3 .Physical fundamentals of the design of S/796/6z/000/003/012/019 Divider arrangements, designed to achieve y-ba,ckground cutoff in high- effectivenes a detectors for fast neutrons (cf. Owen, R., Nucloonics, v. 17, no. 9. 1959, 92; Poroshenko, G.G.,.et al., present compendiwn, pp. IZ5-135, Abstract S/796/6?.t QOO/003/013/019), are classified according to the principle and method of division (fall-page table). There are 4 figures, 4 tables, and 15 references (2 Russian- language Soviet and 13 E:ngli sh- language). ASSOCIATION: None given. Card 3 /3 S/796/6Z/000/003/013/019 AUTHORS: Doroshenkoo G.G., Stolyarovat Ye*L* a TITLE: Cutoff. of a y-background in high- effect'ivenes s fast-neutron detectors with the aid of a space charge in a photoelectronic multiplier. SOURCE: Moscow. lazhenerno-fitichaskiy institut. Pribory i metody analiza izIuchenly. no.3. 196Z# 125-135. TEXT: The paper describes the experimental steup for the cutoff of the y- background according to the authors I inethod (d. AN SSSRs Izv.# v. 25 p no. Is 1961 P, 15Z) by differentiation in effective fluo.rescent. (dej.ctivation) lifetime (FL) of the scintillation of some organic phosphor-a depending on the density of the ionization determined by the type of exciting particle (Owon,R., IIIE Trans. Nucl. Scis& v. 5#no. 3, 1958, 198; Brooks, F., Nucl.Instrum.& Math., v.4# 1959, 151). The difference in FL is transformed into a difference in pulse-voltage amplitude at the photoelect- ronic -multiplier (PhM).output. For that purpoiie i:he PhM is operated in a special state of deep space-cha~rjze saturation in which the magnitude of the saturation ampli- tude is determined so16Ij by the FL. The charac,!eristics of NaI(TI) crystals, anthracene, stilbene, tolane, and naphthalene used for this purpose were determined experimentally. The equipment uned is illustrated schematically. The character- istics of the same substances are also depicted as measured in deep space-charge Card 1 /Z Cutoff of a -y-background. S/796/62/000/003/013/019 saturation, also the dependence of the saturation amplitude on the FL. Agreement with literature data is termed good. Calibration curves for various PhM voltages are shown, manifesting a flat spot which spreads toward the lower-energy area with increasing voltage. The amplitude distributions for I.." and Z.5 kv are shown sepa- rately. A comparison of the amplitude distributions for pure -y-radiatore on these graphs shows that for sufficiently high flux densities in the Pulae the dependence of the maximal amplitude at the FhM output on the y-qu.;Lnta energy disappears (the above-mentioned flat spot). It can be proved experimentally that the high-energy ends of the amplitude dist:ribution of the y- radiation (of a Po-B-j source (max. energy 4.45 rnev) deviates from the saturation amplitude of the pure -y-sources because of the presence of fast neutrons. Thus, a simple discrimination can provide a practi- cally toti'il cutoff of the y-background. The principal advantage of this method over R. Owen' s method (Nucleanics, v. 17, no. 9, 1959, 92) consists in its delivery of large-amplitude PhM-outimit pulses of very short duration (photo), thereby render- ing unnecessary a pre-recorder am lifier. The short output-signal durations pir- mit heavy sensor loads, up to 3.IoTpulses per secoad. Thereare 10 figures and 8 references (1 Russian-language Soviet and 7 Englisih- language, of which one is cited in Russian translation), ASSOCIATION: , None given. Card Z/Z S/796/6Z/000/003/014/019 AUTHORS: Ddroshsnko#G.G.j Stolyarova#Ya#Lo TITLE:. Use of -space M-rgeand gaseous enhancement in a photoelectronic multiplier foi, the separation of fast-neutron, and -y-quantum impulses.' SOURCE: Moscow. Inzhonerno-flatchaskLy instItut. Pribory I metody analiza izluchenty. no.3. 1962, 1,36-142. TEXT: An experimental investigation was made to increase the saturation- amplitude ratio for the recoil protons and recoil Coniipton.electrons (p= n/y) as set forth in the authors'. preceding paper ia the same compendium (Abstract S/70.6/62/ 000 /003 /013 /019). For that purpose the effect on p of the operation of the three ,last photomultiplier (PhMj cascades with various values of the load resistance R13 in line with the 13th dynode is studied .(circuit shown) 8 It was discovered that with large values of R13, at and above ZOO kohms and at certain fairly reduced voltage differences between the lZth and the 13th dynode p Jumps abruptly from appx. I to appx. 1.6-2.0, an effect which leads to a clear aeparation of the fast-neutron impulses on the oscillograms (photorecor ding a shown). This interpretation was verified experimentally by means 6f Impulse -amplitude distributions from a. Po-Be sources shielded by various -layers! of paraffine and Fb. A 100-channel"'Radugall analyzer was employed. rho plottdd graph shows that a 406-mm thick paraffine layer weakens the fast-neutron flux to tieir-zero, whereas the number of y-quanta pulses is approximately halved. The r6-Vdrse result occurs with Pb. A y-neutron, calibra- Card 112 'Use of space charge and gascoas enhancement.,. 5/796/62/00010031014/019 tion (graph) shows.a clearly defined saturation plateitu for both y-quanta and neutron impulses, with a saturation- amplitude ratio of the order of Z. The points on the gamma- calibration curve were obtained with an array of C8137, Zn65, ThCll , and Po-Be y-sources; the points on the neutron curve were obtained with a Fo-B source for 5.5 mov, Po-Be for 11 mov, a neutron- g a nerator D(d,n) and T(dan) reaction for monochromatic neutron's at 4 and 15.85 mov, respectively, and a Van-de-Graaf- equipment T(p, n) reaction for monochromatic noutrons at 0. 76-3. 11 mev. The potential-trap effect is interpreted with reference to Ivey,H., Adv. Electronics# v.40 .1954, 137. Strong focusing action occurs even with small numbers of positive ions in the interval between d)niLodes, primarily because. they are practically. immobile during the course of the impulse (Spivako G.V., et al,, Zh. tekhn. 1950, 15). An added effect is that of the partial compensation of the space charge of the elect- rons. As a result the electron charge passing onto the 13th dynode is enlarged, which in turn increases the amplitude of the output signal and, consequently, the contribution of the gaseoun focusing effect. Hence, the jumplike increase in the fast-neutron impulse amplitude. This action of this residual gas (Cc) is.termed I.Igaseous enhancement. 11 Any JPhM that operates well. under space-charge saturation,. will also operate satisfactorily and stably under gageDUs enhancement. The practi- cal usefulness of this PhM operation.fox the registration of fast-neutron impulses is evident. There are 6 figwres and the. 3 references cii1ed in the text (2 Russian-langia- ASSOCIATION; None given., age Soviet, 1 English). Card Z/Z L ACCESSION NRi AR~005~ol! 'I tud ~---space c arget-_ -n-tidii-m-o'da- w-~~f -the-saturatio -the --'---termined --on kte tlve- _ofLde _--W. -citat ton 1-y. -by --: thea 0 time -of the a nt ~An estimate -of -:the -elite- ctive . de-w;citation times of -the Investigated scintillators is made against 6alibratior, curves ob-. d tained by--the -indicated- mf'3tbocl--f'or--scinti,Lliitors with well-known de-excitation time, namely tolane, - anthracerte (electron excitation) NaI (TI) :----Tho--- V-41 ues_ -of --the--effective- dc-excitation- time, ob- -taintd as- -a -result 'of of- the -saturation of--difforent 4 scintillators excite, With- eltK~tecjn3- and- protons, -turn out - to be as followst,stilbene T 15"M-6-e -a -and r-----33-msecj, na thalene-- '43-inse-c'. _111;h'e-effective do-_exci.4-atio n: times, of- atilbene~-for,'-i´┐Żlectron:atid--l~roton excitationi- and, also offective--time--of--do-7-x-it;it-ioti bf-anthracerto in-the case--of -C proton Axcit-ition -were 'M ffure 4-for 1,he Ffirst t1mv.-- Tlie-data obtained-. arej-_-_- - compared with data of other exper ments.:, ENCLI 00, SUB CODE: Gv*'Op~'. Cord 2/2 ACCESSION NR; AT4021264 S/2892/63/000/002/0146/0151 AMOR: Zolotukhin, V. G., Doroshenko, G, G Yefimenkoj B. A. TITM The registration efficiency of a neutron scintillation detector SOURCE: Voprosy* doximetrii I xashchity* ot izluchav,iy, no. 20 1963t M-151 TOPIC TAGS: scintillation detector, neutron detector, neutron absorption, Monte Carlo method, scintillation, carbon, Taylor series, hydrogen ABSTRACT: Accurate data on detector characteristics, such as the shape of the spectral line and the registration efficiency of scintillation detectors vith organic crystals is not as yet available. Only a number of approximate formulas for the calculation of registration efficiency of counters is available. These formulas take into consideration: 1) the single stage scattering in hydrogen, 2) the single stage scattering In hydrogen and carbon, and 3) the single stage scattering in carbon and the single and double stage scattering in hydrogen. The authors (Neutron Dosimetry (Proceedings of a SymposLim on neutron detection, ,dosimetry and standardizations Harwell, 10-14 Decemboar, 1%2), Y. 1, 597, Inter- national Atomic Energy Agency, Vienna, 19633 have drieloped a semi-analytic Monte- Carlo method for calculating the amplitude distribution of pulses =0 the counter Card 1/2 ACCESSION NR: AT4021264 effectiveness of a detector with an organic scintillator. Ibis method proves to be highly effective and acquires high calculation precision with moderate machine time consumption. All interaction processes of neutrons with nuclei of the scintillation substance are taken Into consideration, including the marginal effects on the wall& of the scintillatoro These are presented in a graph. The paper also, includes a table of registration efficiency for a 30 X 30 ma crystal. Orig. art. has: 3 formulas, 3 figuren, and I table. ASSOCIATION MookovskLy imbenerno-fizicheskiy insticut (Moscow Physics and Engineering Institute) , .1 . SUBMITTED: 00 DATE Ar.Q-. 06kpr64 ENCL: 00 SUB CODE: Wj PH NO REF SOV% 002 OTEMRt 004 ACCESSXON NR: AT4021265 S/2892/63/000/002/0152/0157 AUTHOR: Doroshenko, G. G-& Glagolev, V. L, Barabanov, 3. R., Filyushkin, 1. V. TITLE: Applicatton of.the denumerable efficiency method for measuring the spectra of fast neutrons SOURCE: Voprosy* dozimetrii i zashchity* ot izluchenLy, no. 2, 1963a 132-157 TOPIC TAGS: denumerable efficiency, fast neutron, Monte, Carlo method, neutron spectrum, photomultiplier,, F103-33, computer, BESM-2t trotpezoidal rule, Simpson rul ABSTRACT: In this paper, a now method for the study of neutron spectra -- the 0 denumerable efficiency methol -- is discussed. This method has the advantage that it is applicable to any shape of spectral line and the initial data used in this i met%od are the integral count velocities, thereby decreasing a statistical error. The main principle of this method is contained in the use of the known dependence of the absolute denumerable efficiency in registering on the neutron energy.* E and the energy threshold I of the neutron counter, Of the possible methods studied, the trapezoidal rule and Simpson rule are the moot suitable. The results'. are presented and verified in graphs# This authors finil the development of a multi- Card 1/2 ACCESSION NR: AT4021265 threshold analyzer to be most expedient because of its considerable simplicity,ami compared with the multichannel analyzers now in use. The authors claim this method will simplify considerabiy the task of obtaining sipectra. The authors express their gratitude to V. 0. Zolotukhitt for his interest in the article and for his valuable advice. Orige art, has: 3 figures and 6 formulas. ASSOCIATION.: Moskovskiy Inshenerno-f izichaskiy institut* (Moscow Physid's and Engineering Institute) SUBMITTED: 00 DATE ACq: 06APr64 ZNCW~ 00 SUB CODE: HS, PH 'NO REP Sovs 004 .007 Card 2/2 ACCESSION NR: AT4021266 5;/2892/63/000/002/015 8/0161 AUMAOR: Doroshenko, G* G., Glagolev, V. I., Barabanov, X. R., FLlyushkLnl 1. V, TITLE: Application of the denumerable efficiency method for measurement of the spectra of 7 quanta SOME: Voprosy* doximetrii i tashchity4t at LzluchenLy, no. 2, 1963, 158-161 TOPIC TAGS: denumerable efficiency, 7 rays, 7 quanta, shield, energy threshold, y spectrometry, organic scLntillators, cobalt 60 ABSTRACT: The authors use the denumerable efficiency me-thod, for measuring 7 spec;ra, This new method is described by Daroshenko, 0. G. and La:rLehav,'A. V. (Izv. AN SSSRJ' Ser. fiz. 27, No. 1, 141l 1963)o The continuous spectra of 7, rays obtained in the scattering of 7 quanta of cobalt 60 in shields of iron, lead and their combination# are studied. The measurement results of the -/ spectra with eight thresholds are presented in graphs. Based on the data, the authors suggest the development of a simple portable 7 spectrometer. The denumerable effLcLeacy "thod makes it possible to use organic scintLllators for y spectrometry*-.,-The authors express their gratitude to A. V. Larichav for his contribution of experimental data. Orig. art* has: 4 figures and 3 formulas. Card ACCESSION NR: AT4021269 S/2892/631000/002/0179/0184. AUTHOR: Daroshenko, G. 0.9 Filyushkin, 1. V., Fedorov, V. A. TITLE: A separation device for a scintillation spectromettm of fast neutrons SOURCE: Voprosy* dozLmstrLL L zashchity* at izluchonLy, no. 2, 1963, 179-184 TOPIC TAGS: scintillation spectrometer, fast neutrons, 7 quanta, time dis- crimination ABSTRACT: The discovery of the fact that the form of a sc intillation pulse in some organic phosphors depends on the type of exciting particle (Brooks, F. Nucl. Instrum., 4, no. 3, 151 (1959)) has made it possible to perform a separation of pulses from fast neutrons and 7 quanta. This has enabled the authors to develop a highly efficient single crystal scintillation spectrc6eter, the schematic of which is presented in this paper. Oscillograms which explain the operation of the device are presented. The authors also present the results of measuring the thres- hold of separation and the spectrometric threshold of the separation device. 3 The separation device operates normally until the "integral load" exceeds 4 X 10 pulses/ sec. Within these limits, the efficiency of the separation device does not exceed 5 X 10"3% in respect to 7 radiation. Orige art, has: 4 figures* Card 1/2 ACCESSION NR- AT4021269 ASSOCIATION: MoskovskLy Inshenerno-fizicheskLy institut Nscow Physics and Engineering Instituto). SUBMITTEDt 00 DATE ACQt 06Apr64. ENCL: 00 SUB CODEt SD, NS t0 REP SOV: 002 OTIMRt 004 Card 2/2 ACCESSION NR: AP4006840 S/0120/63/OOCI/006/0175/0175' AUTHOR: Fedorov, V. A.; Doroshenko, G. G.; FilyuslikLn. I. V. TITLE; A sensitive threshold device SOURCE: Pribory* i takhnika eksperimenta~ 7ho. 6, 1963, 115 TOPIC TAGS: sensitive threshold device, sensitive threshold circuit, threshold circuit, stable threshold circuit, threshold pickup ABSTRACT: A senaitive triggering device ia briefly dwicribed. It consists of a- two-tube single-shot multivibrator with an operating threshold of from 2 to 200 my, depending on the bias voltage used. Selected t-.,.be operating conditions and the use of a double diode key in the positive -feedback circuit are responsible for its high sensitivity. Means for stabilizing the bias voltage are provided. Orig. art. has: I figure. Card -1/Z ACCESSION NR: AP4006840 ASSOCIATION: none SUBMITTED: 173an63 SUB CODE: SD Card DATE ACQ: 24Jan64 NO REF SOV-. 000 ENCL: 00 OTHER: 000 ZOLOTUIMIN, V.G.; DOROSHENKOj G-G,; YEFD(ENKO,, B.A. ....... Calculation of pulse amplitude distributions and counting efficiencies for a fast neutron scintillation detector, Atom. energ. 15 no.3tl94-200 S 163. (MIRk 161lo) (Scintillation counters) IJ .952 S/04~46~4027/001/043/043 B108 1 'AUTHORS: Doroshenko, G. G., and Larichev, A. V., TITLE: Counting efficiency method of studying continuous fast- neutron and gamma spectra PERIODICAL: Akademiya nauk SSSR. Izvestiya. Seriya fizicheakayal v. 27, no. 1, 1963,'141-146 TE'XT: This paper deals with a new method of spectroscopy, which utilizes the high.efficiancy of a scintillation detector and by one order of magnitude reduces the time required to collect information by the usual method of measuring the differential spectrum of the charged particles. The new method is based on the known depen *dende of '-- the absolute counting efficiency on E the energy of the fast neutrons of-gammas and B the energy threshold of the counter. The integral couht rate N i is related Emax t0 f(E) the differential spectrum sought by the e'q uation Ni f (E)Ei (E)dE. Emini Card 1/2 S/048 53/027/001/043/043. Counting efficiency method of B108YB180 The subscript i at N, Emin' and E indicateB.the givan form of counting efficiency. The beat results were obtained when f(E) was represonted in n the form of a polygon: f(E) f - 7L(E-E k(I(E-Ek) k+0) where I(E) k-1 for E.>,O and I(E) 0 for E< 0. Results obtained with this method agF" well with other experimental data. This paper was read. at-the 12. Annual Conference on Nuclear Spectroscopy, Leningrad, January 26 - February 2, 1962. There are 6 figures. Card 2/2 L17862-6) EWT(M)AM, --AFFTC/ASD __:VMZSSTON-`1M: AP.,003704 S/00411/63/027/007/0049/0952 '.1 AIMIOR: Doroshonko G.Gj 3~iIX2shkin, X.V. Amplitude-time discrirAnation of the gamma bncltground in a scintillation TETLZ., a o Un,, /Weport of the Thirteen.h Annu "lon e;;nc s atromotor for fast neutror -iz adaar Spectroscopy hold in Kie-v from. 25 Janutiry to 2 1'ebruary 196j/ AN,SSSR Izv.Seriya fiziches1mya, v.27, no.7, 1963, 949-052 V 'TAGS: neutron d0tootors, organic scintillators, discrimination AIATRAM The fact that the shape ottho scintillation pulses in soma organid. ;.phosphors depends on the nature of the exciting particle has made it feasible to discriminate the pulses duo to background gamms-rays f;rom pulses produced by fast nefitrons thereby realizing a hiah-officiency, neutron di)tector. A good separating cArcuit must insure the lowest possibl,a separation thr3shold and reliable cut-off of th6 gamma -background, and allow of a high' load (couating rate). Unfortunately, ~,Vr t egen separating circuift do not fully meet thesa roquiroments. Accordingly, a i.,!(--separat ng arrangement utilizing amplitude-time discrimination is proposed-in the J;~ Present paper. iThe arrangement is diagrammed in Fig.1 of the Enclosure; it con- Card 1/3 DOROSHENK09 G.G.; GIAGOLE;Vp V.I.; BARABANOV, I.R.; FIIJUSHKIN, I.V. Results of measurements of fast neutron spectra using the counting efficiency method. Izv. AN SSSR. Ser. fiz. 27 no.10:1308-1312 0 163. (MIRA 16:10) DORO G. G.; YEFIMENKO) B. A.; ZOLOTUIGIIRA) V. G. "A Method of Calculating Efficiencies for the InvestigatIon of Continuous Spectra of Fast Neutrons." report submitted for All-Union Conf an Nuclear Spectroscopy, Tbilisi) 14-22 Feb 6h. MIFI (Moscow Engineering Physics Inst) DOROSHENKO, G. G.; FILYUSHKIN, I. V. "Spectra of Fast Neutrons of a Pb-Be Source After Water Shielding." report submitted for All-Union Coaf on Nuclear Spectroscopy, Tbilisi, 14-22 Feb 64. MIFI (Moscow Engineering Physics Inst) . -- . Ii. Ya.; VLADIMIROV, L. A.; DOROSHENKO, G. G.; DUMOVA, A. A.; TDMONOV, A. N. 'Concerning the Questioa about Working up the Spectra of Gamma Rays and Past I Neutrons Measured with the Help of Single Crystal Scintillation Spectrometers." report submitted for All-Union Conf on Nuclear Spectroscopy, Tbilisi, 14-22 Feb 64. MIFI (Moscow Engineering Physlas Inst) t WIT, U ~5I L' 244u_62~.': ZWTV ID AC ESS 8/1892 6k 4',j=_ 0 a Zoo ~__ ov V A OMORt. led r S_Doro isako 717LE: -Matrix methddifor: itirm.101 ~_thse VolatIiva-content-IoUa given-isotope- Vithin- samp 4 ---------- SOURCE: Hoacow.,Inzh~rie'r'u'o-figichook4 inatitut,--yoprooy-dozimetrit. L_Ntshchity~ 3i:_Y64-30"31- TOPXG TAGS: -jsotopei _Ledt.ops contatit, matrix -mathod activar ion -analysis --neutr -Gpectrum-gafflma-spe~ctrum 4ete ABS%TACT-. It ii.,'often UeC4*k1kr - _tP rmine.-tha- relative- abundance-of -a -given an ary -sample -cousistin :----Isotope within- a:-of several isotopes. -A method is --proposed based-on the-laidOn total f &at neutron ot-y--quanta spoctrum of -the - awvle ancl the knowledge -of the- -oar: tial --a-pe-c-tium of -each of the isotopen... The article presents thecase of fast neutrons, but the res ulting method can aloo be used in cas-as when the spectra-are-diocrate rather than continuous. The new approach can be used in activation analysis,,---Origo-arto-haot--:7 formulaso ASSC~CL=ONI gone Card 1/2 4 ~ L 24403-65 AMSSION M A75003200 - SUIRMISDC~:06 oo-- w nay imt 000 001, orml Card 2/2 ~_- L~~ _111 --_ - ...' . I '. , , 7 L 24402-65 EMT (m) DIAAP P.M ACCESSION NR.- AT5003281 3/2892/64/000/003/'0032/0044 AUTHOM Doroshcnko3,_(;._G.; Filyushkiu, 1, V Iradorovo V. A. TTAU: Fast aet:trom spectrometer SOURCE: Mosciwo Inzhenerno-fizicheskiX institute Voprosy dozimetrii i msshth"7 at izlucheniy,, no. 3, 1962~, 32;Z4 TOPIC TAGS: J!ast neutrons neutron spectrometer* scintillation spectromellters stilbene crystal, radiation dosimetry ABSTRACT: Fhat neutron scintillation spectrometers are extremely efficilin t de- vices, but due to the almost rectangular line form and high Y--sens itivitys data frao! such spectr(meters are difficult to process. The method of recorditS effi- ciencies published earlier by the authors (Xzv. AN SSSR, Ser, fiz., 27, 10, 1308, 1963) yieldo very reliable fast neutron spectra, and the high efficiency of the sciatillation spectrometers opens a real poasibility for the measurement of the spectra of ver:7 weak neutron beams (e.g., 20 aeutrQualcm2-sec). The authors des- cribe in detail a fast neutron spectrometer whose good linearity allows t~e at-- taitiment Of an extremely low spectrometric resolution threshold (14 80 kev on the 3 (IjS.103 else,- --emitted-electirpajeale) at relatively high permissible locd The Card 1/2 L 24402-65 ACCESSXOM NR: AT5003281 30 x 30 to cylindrical stilbene rystal to connected to an FEU-13-type photomul.," tiplier* The article describes the electronic circuitry and gives the temporal diagram of the separation device pulses, the determination of the energy thr63- hold, the shape of the Compton distribution, the ratio of the half-height energy to the maximum Compttin electron energy as a function of the energy resolution (Cs 137 fzquanta), tho atilbene lfght yield as a function of emitted protons, awl the inverce transpostid stilbene crystal matrix# Test measurements of fast aeu- trons from Po--Be soutcea were in excellent agreement with the results of photo- plate measurements and resonant cross section atructure (neutron-oxygen iaer- action) date, Orig, art& bass 4 formulas# 9 ftg=es, and 3 tabLes. A;SOCv=O!T*. Sons UEM'IIED: 00 90 REP SoVi 004 W.M: 00 SUB CODE: EP OMR: 006 Card 2/2 L 24400-65 ACCESS1011 NR: AT5003284 S/2892/641000/0031006510071 AMOR: Fedorov, 7,. A.; Dqro,vhed0:AJU_Q* + TITLE. The use of Kotellnik(nrls theorem In the sepetrometry of continuous energy spectra oX radiation SCURCE* Moacow4j Inzhenerno-fizicheAfy institut. Voprosy dazimetrii I Eashchity ot izlucheniy, no. 3, 1964, 65-71 TOPIC TAGS: radlospectrometry, energy spectrum, r4diation energy, Fredholm first order equation, integral equation, Kotellnikov theorem, information theory ABSTRACT: During the study of continuous radiation spectra, one frequently encoun- ters the Fredholm first order inti~grat equation F(W) -f f (E)K(E, EI) dE, connecting the differential disEribution of pulse amplitudes F(EI) with the dif- ferential energy radiation spectrim f(E). The present paper discusses the feasi- bility of an analytic representation of f(9) free from the usual shortcomings of the.polynomial representation. Xt. to based on the theorem due to V. A. Kotellni- kov ( 0 propuaknoy sposobnosti effra I provoloki v elekroavyazi. Materialy k X-= Voesoyuznom7 allyezdu, VEK# 1933)p which Is well known in information theory and Card 1/2 L 24400-65 ACCESSION NR: AT5003284 which states that qq arbitrary function can be-represented exactly using f requen- cies between 0 and Jj max if the fonction is sampled at intervals it/U)max second3 apart. The results aliow that by the use of the above-mentioned theorem one can indeed augment the accuracy of quadratures of approximate solutions of problems of spectrometry and obtain irell defined systems of linear equations. Orig. art* hav: 17 formulas and I figure,, AS'SOCLUXONi None f SUMITTED: 00 EIRM: 00 SUB CODE: NPg DP NO REF SOV, 008 DTF:ER#. 000 Card 2/2 211;98-65 EWTW/EWA(h) ACCESSION NR: AT5003283 S126921(V4100010031007210075 AMIOR: Fedorov. V. A.; Doroshonko, Go Go TTTLE: Measuring device at the Input of a nonlinear amplitude analyzer SOURCE: M'scowe Inzhenerno-fizichaski-r institut. Voprosy doEimetrii I tashchity ot !i~ __3 ___-6C_ izlucheniy, no). , 19 9 7Z,-7b TOPIC TAGS: nonlinear analyzer, amplitude analyzer, channel discrimituitor, chan- nel,specification, radiation doolmetry J,/j? ABSTRACT: During amplitude analysis, i.t is necessary to separate the bouqdaries of the analyzer channels according to socwt given lAw. Such is the case In fast neu- tron spectroscopy CC. 0. Wroshenko, 1.. 7, Filyushkin, V., A. Fedorov, Voprosy do- zimetrii I zashchity ftluchenly, no. 3, 1965, p. 32), where the boundaries are separated accordirW, to the nonlinear law of scintillator light signals$ In the present articles the authors describe in detait the circuitry and operation of an input device which differs from other known setups by the use of a threshold ele- ment whose triggering inatant dete=Lnqts the address of the respective channel. This is achieved by an appropriate ebarige in the discriminator threshold time (fr" longer to sharter) through a'distriltuted delay lines The channel number is Card 112 L 24399-65 VT(m)/2'WA(h) ACCESSTON NR-. AT50032116 Sif2892/641000/003/0017/0081 AUTHOR: J?gtd _S~r~V. ~A.' Doroshettkoi 0. G. 1,4- TITLE: Sensitive stable amplitude disetiminator SOURCE; _M!jsqqy# 1=42nerno fWcheshy ingtitut. Voprosy dozimetrii L zaahchity ot izluchaniy, no..3, 1964, 77-81 TOPIC TAGS: amplitude, discriminator, mouovit,rator, nonlinear diode quadrupole diation dosimetry radiospectrometer ABSTPACT- The amplitude diucriminator, ova of the most important elm3nts. of a spectrometric device, is actually a nonlineav element generating a signal whenever the -amplitud of the input signal-inceeds the given discrimination threshold. A new amplituAe iscriminator:,has been distgited around a highly sensitive momovibrator having a minE clear operating thresholil on - the order, of 1-2 mv, The discrimida-e-- tion threnhold is controlled by the most stable discriminiting clement - the diode (provided it is thermally stabilized), whLlo the tube circuitry of the. motlovtbrator represents a special kind of zero-element whose possible drift practicall, doe ot affect the operation of the entire device. The especially high sensitivity of the moaovibrator circuit ia by a particular chotce of tube operating points and by the 1, 24399-65 ACCESSION VR: AT50032815 Me of the positive feei-back of the, nonlim!ar diode quadrupole whose transfer co- efficient is determined in an essential way by the magnitude of the input signal 01. A. Fedorovs G* go Dxoshenko~j T,_Vs_ Fil-rualLkins Pribory i tekhnika eksperimentas 6, 69, 1963)* Orig, art* hast 7 formulas and 2 figures. ASSOCIMON: None r S IUMMU: 00 ENOW 130 SUII Com NP'Ir 110 REr SOV: 001 OM 0 R: 000 Card 2/2 ACCESSION AT500"7;290 S/2892/64/000/003/0101/0105 ov, V. A. 7' AUTHOR, Damshmku G.G.-Daraban 1. RI.Fc4oroy TITLE: The processing of spectra I)t-hind water tAilelding, using (11ri Ineffiad of eftriting efficiencies SOVIRGE: Moscow. itutitat. Voprosy dozimatrii i zaalachity ot izIu('-IIcI)Iy' no. 3, .1964, 1 .166 TOPIC TAGS: neutron spectrum, monocnerge(Ic neutron acattering, water allielding, counting efficiency mc6od, reactor shielding ABSMICT: The mediod of counting efficienoles ~scc, e.g., G. G. Doroshen1co, Ot al., Neutron Dosimetry. Proc. of Symposium on neutron detectton, dosimetry and Standardiza- Lion, Harwell, Doe. 10-14, 1962. Internalioual Atomic Energy Agency, Vienria, vol. 1, 1963, p. 337) in ibe afigic-scatterlug approximrition was applied to tho study of E;pmtra of ixtonoenergeUe noutj*onn ball-And water shle'idiag. Monoonergotic 15. 1 Mov neutrons orJVInatcd from the accolerator reaotlon Dk + T? -+ a + HeI4. Card 1112. L 23?go-6r- ACCESSION NR: AT 5003290 Data froin a target at tho center of a wattar-1111M tank (rjituttlatl-ng infinitc gmmutry) ware by Yu. A. Kazirmst-dy mid V.A. DiOn. no resuMg art) compared mrith Iiie-Orf-~tical databy a, Aronnon at al. (USAEC, Report NYO-6269, 11954) and With Ole cxac~ J"ImIte Carlo calculation of counting officloncies by V, G. Zolotalthin Cit. al., (Atorrmayal cnem:iva, 15, no. 9 1964, 1.90). The agreCmunt is good, indicating that tho appraxl- mat-ion takin'T into ac"'oWit single hydrogen atora scatterbig enn bo utilized for the appi,Wniate evalitafLan of fastneutrou spocLra, Orig. art. has: 2, formulas, 2 figures, and 1. table. ASSOCL&TION: none --SUI3 Dr.- NP - ------ NO-REF SOV: 004. OTHER: 002 Card 2/2 j /6 r - Pc-f~lp) eb R1.1 ACCESSION NR- AT5003,292 S/2892/64/000/00.':1/01'10/0124 AUTHOR: Dor shenlco. G. G. Fedorov, V. A. Barabanov, 1. R. ; Grishin, Yu. L. TITLE: Analysis of a photomultililtor ojmrating In Vic nonlinear region SOURCE.- Moscow'. lnzhencrno-fizicli~shly Institut. Voprosydozimetrit I zashchity ot I z1 uc 124 ,ropic TAGS: photomultiplier, saturatcd photomu.1tiplier, scintillation counter, photo- !multiplier theory, sodium Iodide scintillator, radiation dosimeter ABSTIWT: Pliatom tit Upliorn operating In the nonlinear region may exhibit, valuable properties (sej,3, e.g., G. G. Doroshenko, Ya. L. Stolyarova, Neutron Dosinietry, Prm. of Sy~msiu~n~X'in neutron detection, dmimetry, and standardization, Harwelt, 10-14 Dee, 1962. International Atomic EnerjarPigency, Vienna, vol. 2, 363, 1963). Since-such. operations may involve complicated processes, the authors carried out. an mialysis of photomultipliers workbig under high saturation conditions. On die one hand, the analysis was based on oN)erimental data concerning the dependence of die output puffles from various electrodes ot Vie systeni on the erlor f secondary particles (for flal(Tl), anthracene, stlfbane, tolmi, and naph6alenRio stals), on Um scintillatlon. Ume of scintillators,/ and on Me thno cond'UR Wffib C load; on the other hand, the analysis Card 1/2 L 23782-65 ACCESSION NR: AT5003292) utilized simple physical mudels_ of the olmerved events. The article also contains diagrams of the p-Macd phaV) m-ultipler clirrent for various scintillatora at E -4.43 Mev, of Uie amplitude -of We pulse voltage as a function of the saturation current for various scintillation timei;, of the current pulse;5 for a scintillation thne of 5 nsec. and various degrees of uncertainty J~Ln Uie Urne of flight (describable by a constant 1), of the dependence of the current and. voltage g0se amplituJos on T, of the saturation amplitude versus the scijiLillaLiori constant, ajid of the current attl voltage pulses across the loadl; as a ftmetion of time. 'llie restdts of ihe,)rotloal calculations are in good agreement with present and previously published export-ruental data (G. G. Dorosheako, Ye. L. Stolyarova, Sbornik rabot po nekotcrym voprosaw dozinietril i radiametrit ioniziriqu-shellikh iziu-,Cheruy, nu. 2, N1. , (_-;osatornizd1Lt, 1.961, P. 112191. Orig. art. has: 9 formulas, i1 11gures, and I tab I e. ASSOCIATION: none SUBMITTED: (10 ENCL, 00 SUB CODE: UP I'M RT,r GOV: 000 OTHEV.; 006 Card 2/2 ACCESSION NR: AP4015566 S/0089/64/016/002/0152/0153 AUTHORS: Doroshenko, G.O.; FilyushkinA IN. TITLE: The spectra of fast neutrons from a Po-Be-source passing through a water shielding SOURCE: Atomnaya energiya, v. 16, no. 2, 1964, 152-153 TOPIC TAGS: Po-Be-source, stilbene crystal, gamma-background, dis- crimination, semi-infinite geometry, barrier geometry, fast neutron neutron spectra, water shielding, oxygen nualeus,infinite medium, relaxation, isotropic source, fission spectrum ABSTRACT: Experimental measurements and theoretical calculations -have been made of fast neutron spectra fron. a Po-Pe-source after L.hey have passed throug~h a water shielding. In view of the proxi- mity of the energy spectra,, the results obtained are applicable to Fu-Be- and Ra-Be-sources. The measurements have been made with a single-crystal spectrometer of fast neutrons and a stilbene crystal Card ACCESSION NR: AP4015566 measuring 30 x 30 mm. In the case of a 40 cm layer of water, the full neutron flux hitting t:-,c detector amounted to 7.7 neut-r/cm2-sec, and the measuring time was ~ hours. The spectrometric threshold of the spectrometer was determined by a matrix and amounted to-1 Mev. Attention is called to the congruence between the tbeoretical and experimental spectra in an infinite medium. On the other hand, the characteristic details of the real spectra, associated with the energy dependence of the oxygen cross-section, were not clearly manifested in the theoretical spectra. The attenuation theoretical- ly c~alculated for an infinite medium was found to be congruent with the experimentally measured attenuation in a semi-infinite medium in the case of a 30 cm layer. "The authors express their gratitude to V.A. Chudayev for his assistance in calculating the theoretical spectra of a Po-Be-source, and to Yu. L. Grishnin for his assis- tance in the experimental data processing." Orig. art. has: 3 figures. ASSOCIAMION: None Card.2/ ACCESSION NR: AP4020327 S/0089/64/016/003/0218/0223 AUTHOR: Doroshenko, G. G.; Glagolev, V. I.; Barabanov, 1. R.; Filyus%kin, 1. V. TITILE: Analysis of reliability of methods of studying continuous spectra of fast neutrons and nar.%na quanta Atomnaya enargiyz, v. 16, no. 3, 1964, 218-223 TOY10 TAGS: continuous spectrum, fast neutron, gamma quantum, radiation spectru=, matrix method, neutron dosimatry 0 A357RACT: Various matrix nothiods for studying the continuous radi;ition. spectra wcr" analyzed from the viewpoint of reliability. The physical raliability of lrath:~ds of studying the continuous spectra of faic neutrons and Y-quanta is eva'~.uaced on the basis of applying criteria o_` conditionality of linear equation SYSLdMS. The matrix integral and differential methods of spectrox.Lcry with resp2ct to the shape of the line are discus:;ad and compared. in eaz*, ci z.-. nezI-od:;, the relationship of conditionality to line shape, ma,,ri-.- and :3y rankle is s:udied. An advantage is shown for the method of couat...- with poor line shapes. "The authors are grazefLil to V. G. Zo.Otu;Ch.-.-. fir his Card 1/2 AP4020327 in zhe work 6nd his helpful dizcussions." Oiig. art. has: ~O equations, 4 1 table. AS*SL~^-:ATION: None s u Bz-., z ---.7 Z D14Aug63 DATE ACQ; 31Mar64 ENCL: 00 SUB CODE: X? 1\10 REF SOV: 006 OTHER: 005 Card 2/2 ------ - - - - - - L 4!5!572:& 1, ?r,(j )/LvT(js)/!2.WP(j )/ErA(h)/EffA(1) 1~"/Pob ZXI/RU 0(~9li) AU7HOR: Zolatukhtni V. (1.1 Doroshewcof 0-9 G# TITLE: Upendence of the calculated rant-neutron counting officienLwr cc the geo- metry of orgamic acinUllatore S OU RC E -. Atccanaya energlyup v* 18p no* 3. 1965# 287-290 WPIC TAGS: organic salirtillators,-stilbenep fast neut6ron counting# courrUrqt et*- ficiency ABSTVACT: 'In view of the contradictory published date on the Subject, the authors present- results of- Monte-Carlo ealcu4tiona of the covnting efficienc5, for four geometries of a c7lindrical st1jb!!!,Prystal. The calculations for each geometry were made at 55 initio.1 vkeuti~n-tineii~ies in the range 0.5-18 MeV. Vie choice of the encngica was goveimed by the vesonance structure of the cross aection for thet interaction between the neutrons and the carboa nuclc.'L,, nie calculAtion procedw,e vnr. described elsewhere (Atomnsys energiya v. l5t 1940 1963). The OtatisticaJ. On- curacy -van 0.2--0.8%# The resulte show that the recamince otructure of the carb,)n Card 1/91, L 4,5579-.65 ACCESSION HR: Ap5cogi.26 cross section comes into play in %U geometries of the stilbene cMital, and be- comes stronger ~dth increasing scliatillator dimensiona. If scintillators of rv- latively small size are used and the required &"urwy to not hleb, it is posoJble to use the formula for the counting efficiency at amergles up to 10 KeV in the ap- proximat-lon of single ri-p scatteringo Plote vtdch -wke it posoible to Isprove the accuracy IV interpoUticyn are presented. Orig. art. hast 2 flLglares wW. 1 forwalsi. ASSOCIA770Hs None SUBKITM O&Tun64 IML: 00 SM CCOU: NP