SCIENTIFIC ABSTRACT VANYUKOV, L.G. - VANYUKOV, M.P.

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SCIENTIFIC ABSTRACT
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- ------- ---- - I [Keeping bees in two-story hives] Bodershanis pchel v dvukhkorpusnykh ulliakh. Moskva. Ministeietvo aellbkogo khoziaistva SSSR, 1956. folder. (MLRA 10:!,) (Bees) BIZBORODOVA. A.; DATSIV. V.; TAII=OV, K. Practices of apartment-house offices in taking care of children. Zhil.-kom. khoz. 8 no.12:20-21 158. (KIRA '13:1) 1.Sekretarl Chelyabluskogo gorkoma komsomols (for Bezbor,odova). 2.Sekretarl Ufimskogo gorkoma komsomola (for, Datsiv). 3.Prodoedatell roditellskogo komiteta. pri zhilishchnoy kontore 1!o.3 Petrogradskogo rayona Leningrad&. (Children-Kanagement) TANMOV, X. Plenums of trade-union committees. Sov.profsoluzy 4 no.12:61*46 D 1566' (KLRA 10:1) 11. 1'netruktor TSentrallnog-, komitats profsoyusa rabochikh morskogo i rechnogo flota. (Trade unions) 0 0 0 0 0 0 0 0 0 0 0 * 0 0 0 0 0 j A i d I I I v 11 u 13 m is 16 f, 0 " 0 it Im x 10 Is A 4 fj 0' a I-C -A. F -A-jt--J-A.-L a A p a a I., I v t -1 -A. M CUL a IA &j -K, r*08.1 I.P *All I- !,Sir 1w 12, " r A. Allmi t see 00 go* 00 i-le** * I I 1 9*0 9 9 zoo Isee :i~ A s a -s L A SITALLUMCKAL LITMIL41 C ASSIFKATION tag., %1.1411f. too 181404 .11 T--r -.. 4 T I ~~ ;j aw 0 a 6 1 w 04 0 a a v U S At 10 U o o 00 00 o' 00 0u no 40 0 0 0 0 4p 'I 0,14 000 00 000 0 0 0 oic 0 a 0 0 0 0 0 0 0 0 VAIIIYUKOVt. M. P. and Alcksandrov, B.A. "Or)tic "easurenents of Uie Phenomenon of a Directpd Dlast.," a i-c,.-,Qrt at onp, of thu. scs3ionu of tiie Gc,-~cral AzZeMblies of OF11-211 in l,',Id4. IATI-Scr Fizi Vol 9, No 3, 19415 "j$* 400 0 41 00 At * 0 0 0 0 190000#1100000000titoil 0 4 0 0 * 0 or A. 1, ]A hl t- a I.- I 1 .4 Jw 'vPCILMS 4.0 !8~0fol.8% .Pit A darkov ft:r photwspits OSPW-. wifrI4-v- fro a park. The lis", .4 ituo 4rk 6 rrdtvf4,l try 2 cut* 1 flartwk. 32A cut. III ellAul 11tual"t '%) M. alwt, sad 1% Own coocil. on the ocidiv : a 4-rujurfs ulpwura. Tlw vit4fj.'41 take* I"'r. lwf~~ ttw utirwip. awl It% bluml,m cAtt lk- vtvu ou Our photntraph. It%jh% njj~~W III ItIf "lit, 14 00 Ow Ad.l.m. 60 see too 9 At 4 1 V U 4 11 11 it a A( a 4 11 a of a a ft Is, 00 0 * 0 111 0 * * 0 * 0 0 0 0 111 0 0 0 0 9 o 0 0 9 0 00 * 0 111 411 0 0 0 0 0 0 0 04-9 000 USSR/P~hys~cs - Spectra, Flash 21 Sep 53 ~"Photoelectric Method of Recorrlim~ Variation in Tim of Spectra of Light Flashes, ~U.P. Vanyulkov and.11.D. Khazov rAll SSS.RY Vol 92, No 3. pp 523-524 Describes an improved apparatus for photoelectric recording of spectra wb1ch shows immediately curve of spectral distribution of endpsion at any epeci- fied moment. The resolution in time depends only on the rapiclity of recording of phenomena on oscil- lograph, which for the time being is 10-8 see. 268M Indebted to S.E. Prish, Corr Mem, Acad Sci. WSR and to Acad A.A. Lebe(lev, who also presented ar- ticle, 20 Jul 53. 268T92 '%W'W USSR/PhYsIcs Electron-optic photography FD-897 Card 1/1- Pub 153-6126 Author : Vanyukov, M. P. and Nilov, Ye. V. T'4tle : Application of the,electron-optic image-converter in pbotography of rapidly occurring processes Periodical : Zhar. tekh. f iz. 24,, :L209-1218.. Jul 1954 Abstract : Possibilitj of employing electron-optic coavjrters is istudied with AEG-type electrostatic focusing as fast-acting shutters by switching them in by means of short voltgge-pulses. At in- stantaneous illumination of the order of 10 lux at the photo- cathode, a redistribution of brightness and distortion of the image occur. These phenoaena are due to space charge in the tube and the potential relief on the cathcde. Various stages of the spark discharge in argon were photographed at exposures of 0.4 to 2 microseconds. Indebted to A. A. Lebedev. Eleven references including 5 foreign. Institution Submitted March 9, 1954 U41AWics., lile';C~,C6'~~ J., bischarge phenomena FD-3203 Card 1/1 Pub 153-12/28 Author : Vanyukov, M. P., Isayenko V. I., and Khazov, L. D. ............................. Title : Investigation of light phenomena associated with the growth of the channel of a spark discharge Periodical : Zhur. Tekh. Fiz. 25, No 7;' 1248-1256, 1955 Abstract Experimental investigation using an electron-optical converter, of the space-time expansion of the visible and infrared luminescence of a spark discharge channel, and of the propigatim of the shock wave generated by the discharge revealed: (a) the shock .ave sepa- rated from the plasma of the discharge; (b) a layer of heated, non- ionized gas emitting infrared radiation in the farm of arc lines was formed between the shock wave and the plasm; (c) the tempera- ture of the discharge in inert gases increases with the atomic weight of the gas; (d) the average channel temperature was deter- mined from measurements of the spectral density of energy bright- ness to be'57,OOOOK. Authors thanked Acad. A. A. Lebedev for assistance. Diagram, graphs, photos. Ten references: seven USSR. Institution -Submitted November 24, 1954 ITTBJECT USSR PHYSICS CARD 1 / 2 PA - 1700 AuTh%~R VANJUKOVIII.P. TITLE The Application of an Electron-Optic Transformer for the Study of Past Effects. PERIODICAL Usp.fis.nauk, 60, faso.2, 295-326 (1956) Issued: 12 / T97~6 This is a survey of works published in the course of the last 5-6. years on the application of an electron-optic transformer as a rapidly working shutter as well as on the electron-optic development thereby obtained. By way of illustration, the results of investigations carried out by using these new and most effective methods of rapid photography are mentioned. 1. The electron-optic shutter and its application: At first the 11i,ethods of pro- dneing Buoh a shutter are discussed. The first attempts in this direction were made with a standard type electron-optic transformer with electrostatic fo- oussing. In the Soviet Union such work was begun by dynamic operution in 1949 at the suggestion of the academician A.A.LEBEDEV, and already in 1950 the first positive results in form of three-electrode transformers with electrostatic focussing (type AEG) were obtainedl in 1951 the impulse circuit of a standard type five-electrode transformer was constructed. Furthermorej a transformer with combined electrostatic and magnetic focussing is nentioned, and a trans- former developed specially for short exposure photography is distmosed on the basis of a simple draiving. Constructional elements and the oiroult of this device are discussed. On the occasion of the investigation of easily repro- Uap.fis.nauk, ~0, fasc.2, 295-326 (1956) CARD 2 / 2 A - 1700 ducilule phenomena it is advisable to use the simple photographic nethod. By re-taking the photograph at different stages, it is possible to obtain a aeries of pictures by which the development in time of' the phenomenon is shown with sufficient clearness. With the help of the oleoti,on-optic transformer it is possible to build a high frequency stroboscope by means of whiob it is possible to watch and to investigate periodically recurring phenomena with a much higher frequency than would be possible with an ordinary stroboscope. With the help of the impulse circuit of the electromagnetic transformer it is possible to construct a purely electromagnetic scheme for television in colors. The defects occur.ring in the pictures produced by means of this Impulse circuit and a possibility for the increase of the resolving power of impulse- like connected electronic lenses Is discussed. By the method desoribed it is possible to obtain pictures of better quality than with the same optics but with parallel current feed. 2. The electron-optic development and its ap2lications. The electron-optic transformer can be used also for the high-frequenoy development in space and time of light phenomena. The various methods to be employed are disouesed. INSTITUTION: 51-6-26/26 AUTHOR% None given. TITLE: XI Lecture imeni Academician D.S. Rozhdestvenskiy. (Odinnadtsatyye chteniya imeni akademika D. S. Rozhdestvenskogo.) PERIODICAL: Optika. i Spektroskopiya, 1957, Vol.II, Nr.6, p. 828. (USSR) ABSTRACT; Complete Translation. The XI Rozhdestvanakiy Lecture, named after one of the founders of the State Optical Institute Jxieni S.I. Vavilov, took place at that Institute on '16th May 1957. Two papers were presented at this lecture. In his paper "On Colour Vision"o Prof. G.N. Rautian described the retina as a triple receiver of radiant energy which, as a first. step, limits, orders and analyses the information received by the eye and then compresses Gard 1/4 this information for coded transmission to the brain. XI Leoture imeni Academic .Jan D.S. Rozhdestvenskiy. 51-6-26/26 The three-dimensional character of colour as a retinal stimulus forms the basis of MaSurement o1' colour and ite representation in an affine vector space. Of great importance is the problem of the basic physiological system of colour determination since the coordinates of colour in that system characterise the spectral sensi- tivity of the three types of receivers on the retina. Rautian discussed the method of finding directions of the physiologically important coordinate axes by tests using dichromats reported in the Yustova-Nyuberg work. He also discussed other methods used in USSR and based on dichromatism. which is either temporal (N.T. and V.W. Fedorov) or spatial (M. Bongard and M. Smirnov). Establishment of spectral sensitivity curves of the retinal receivers would lead to the most direct methods of study of colour vision* This was shown on the example of a new anomaloseope rO 0 and the results Card 2/4 obtained with it which widen our knowledge of the XI Lecture imeni Academician D*S. Rozhdestvonskiy. 51-6-26/26 multiplicity of forms of colour vision and oermit us to construct a more elastic and precise classification of-these forms. Another example quoted was the proposal for rationalisation of street traffic signals to make them correctly understood by all dichromats. At the end of the paper the author discussed some new attempts at interpretation of the ph,&nomena which form the basis of selective sensitivity of the retinal receivers. Candidate of physico-mathematical sciences M.P. ,Vanyukov presented a paper on "Emission by a RTX,7- V65-p-erature Pulse Discharge". This paper presented the results of the study of certain optical characteristics of spark discharges in heavy inert gases (argon, krypton and xenon) at Card 3/4 pressures of 4-10 atm. Using a now photoelectric XI Lecture imeni Academician D.S. Rozhdostvenskiy. 51-6-26/26 technique temporal variations"of the discharge were recorded in the spectral regica from 2500 to 10000 and dynamics of the variation of the form of are lines in the process of disehar 9 wals deterniined with rerlution in time of 10-f see and in W6Lvelength of 1 . The brightness of the sl)ark-disft,hCLrge channel has a ltmiting value which in xenon at 5 atm is about 11 x 106 stilbs. In capillary-tube d1scharges brightness increased continuously with increase of the discharge energy and no saturation in ':)rl.ghtness was observed. In the capillary discharges brightnesses up to 50 x 106 stilbs and temperatures up to 940000K were obtained. AVA,TLABLE: Library of Congress. Card 4/4 SOV/120-58-6-17/32 AUTHORS-~V~ ~~and Isayenko, V. I. TITLB: A Pulsing Tube Circuit for Obtaining a High Discharge Repetition Rate (Skhema vklyucheniya im Ulf kh lamp s bol'shoy chastotoy povtoreiLiya vspyshek~ snyjcn PERIODICAL: Pribory i tekhnika eksperimenta, 1958, Nr 6, pp 85-88 (USSR) ABSTRACT: Stroboscopic tubes are normally connected in a circuit consisting of two inductances, two capacitors and an ajx- iliary inductance for triggering the tube; the circuit Lr-- shown in Fig.l. One of the difficulties in employing -ca~. circuit is that comparatively low repetition frequenr,----,;-s are possible, A more elaborate circuit, based on the same principle, was therefore developed. This consists of supply unit (see Fig.2) and a triggering unit (see Fi~2 The circuit is suitable for operating a stroboscopic triode (marked S in Fig.2). The storage: capacitors Cl and C2 in the circuit are charged from a constant voltage source through a choke L I by means of two groups of high-voltage diodes, B, and B2 . The triggering unit consists of a frequency generator (a multivibrator) and a delay circuit; Card 1/2 SoV/120-58-6-17/32 A Pulsing Tube Circuit for Obtaining a High Discharge Repetition Rate by means of two blocking oscillators it produces two pulses 0 of..3 lis duration, which are_qpaced at 15 lis apart. The first pulse of the triggering unit is employed to close the oscillatory circuit consisting of Cl and LO in the supply unitl while the second pulse triggers a thyratron which supp- lies a pulse to the triggering electrode of the stroboscopic tube. The diodes B and B in the a-apply circuit of Fig.2 provide clamps for tAe storaga capacitors, so that these can- lidt be charged negatively. By emp-loying the circuit it is possible to drive the tube at repatition rates up to 4000 pps, but the discharge energy is reduced with increasing repetition rates. Thus, for example,, at 500 Pps the energy per discharge is 3.5 joules while at 4000 pps it is only 0.23 joules. The paper contains 3 figures, 1 table and 12 references, of which 4 are English, 5 are German and 3 are Soviet. ASSOCIATION: Gosudarstvennyy opticheskiy instJ.tut(State Optics. Insti- tute) SUBNaTTED: December 9, 1957. Card 2/2 Vfi p), 51-4 -1-13/26 AUTECRS: Vapj3jkov, M. P,Mak, A. A. and Ures, Id. Ya. TITIa: Instantaneous Brio-itness of a Spark-DischarLe Channel in a Capillary. (Mgnovennaya yarkost' kanala iskro-,ro,-,o razryada v kapillyare.) M;RIODICAL-. Optika i Spektroskopiya, 1958, Vol.IV, Nr.1, pp. 90-92. (USSR) AlOTFACT: The paper reports results of measurements of the spectral density of briL;htness of a spark :Lischarge ch,,--nnel in capillaries ffilled wit-h. air at atuospherie pressure, or with xenon at 4 atm. The technilue of measurement and apparatus are deocribed in Ref.2. Capillaries filled with air were Glass tubes with internal diameter of 0.252 0.4 and 1.35 mm and an inter-electrode distance of 10 mm. Capillaries filled with xenon wore quartz tubes with an internal diameter of 2.5 I=. BriChtness Card 1/4 was measured in the direction at riL;ht-angles to the 51-4 -1-13/26 Instantaneous Bric~htness off a Spark-Discharoa ChaLnel in a Capillary. capillary. For the sake of comparison, neasurements of briL;htness of the spark discharge ,.,ere -1'-O..e also in an unbounded a-*;.r jLap. Fib-.1 shows curves, for air, of bhe spectral density of briL;htness as function of the wavelength under var.-ous discharge conditions at the moment when bhe spectral density of brif~--htness at, 4111-94 R reaches its maximum. At constant dischar~,e energy narraviinc- of the discharge channel by the capillary produces am increase of lij-he channel briChtness, particularl7 in the short-wavelenU,-ih part of the spectram. Decrease of the capillary diameter cannot be carried on indefinitely since in very narrow capillaries bx-i,,,~htness decreases (e.6. irt M5 mm capillary brif- ,litness is Card 2/4 less than in the 0.4 rm capillal-,r). Increase of the 51-4 --1-13/26 Instantaneous j3rir- 1-ness of a " arl-DischarSe Channel in a L.~h u tip Capillary. energy of discharGe thrcup;h a capillai7 increases bri,ghtness. The hiFI-~ast brightness of 50 x 106 stilb3 was obtained in a channel 0.4 ini wide, filled with air at atmospheric prossiare, on discharf,inG a 0.011 ~LF condenser charged to 29 kV. The briGhtness temperatu-Ire for this case was 94 0000 K. Increase of the inter- clectrodo, distance from 10 to 20 rini does not appreciably chanLe the spectral density of brightness. FiS.2 showo the rezults for xenon in a 2.5 mn capilla--y filled with xenon at 4 atm (curve 1*' and for a spherical pulse -r-I i scharp-e lartip also filled with xe.'Ion (curve 2). ThQ rcs)~tltr, of Fig.2 show that briChtness Card 3/4 in a capillary filled with xenon x 106 stilbs) is 51- 4 -1-13/26 Instantaneous Brightn,ar.2 of u spark-Discharge Channel in a Capillary. loos than 0'ic- corr.-jspondinE5 britSlitnoos In the :-;plicrical D-MI) (11 x, 1.06stilbs). This is dae to -U'.,ie fact Lha'G the discaarl-;e-channol wid-11-h in a 2.5 mu c_-pJ_llary' is limited by that capillrli~j at a comparatively late starze of t'Alo di-charL~o. and 2 show tbat radiation from a capillary discharf--e ddffers considerably from bla(.-._'.~z-body radiation (dashed. curves), except atu hi0h onqr6-y densitics in 'Uhe discharge channel (FiG.1, ~aurves 1 ancl 3). The- results obtained are suruaa-rized in a table on p.92. There are 2 firures, 1 table and 5 Card 4/4 refeiAances, of whiCh L~ are Russian and I American. ASS0CJIA!2IG1T: State Institute of Optics irzoni S. 1. Vavilov. (Gos opticheshi~ iLi. 3. 1. 11avilova.) 0UMIITT~`Jj): March 18, 10,,'-7. AVAIIABU, : Library of Congress. 2. Cepillaries-Spectral 1. Capillaries-Spark discharge-Brightness density Wkiand.fiz,-mat.nauk; DOMTSOV, A.F., in2h.; ISAYEVKO. V insh.; MAK, A.A., inzh. Sectional high-ressoure spark discharge lamp. Svetotakhnika 4 no.4:9-11 Ap 158. (MIRA 11:4) l.Gosudarstyannyy opticheski7 institut. (Blectric lamps) 'VANTUNOV, M,P.; GORDKHDVSKIY, TUIN, Conference on hi;h-speed photography and cinematography. Usp. fis. nauk 64 no.4-.790-795 AP 1589 (MIRA 11:7) (Photography$ High-speed) (Ginematography-Scientific applications) AUTHORS: V.-inyukov' 11 - 'v-,17"fak, A. A. SO V/5 3 -66' - 2 -6~ /9 TITLE: Pulsed Light Sources of Great Brielitness (Impullonyve istochniki eveta vysokoy yarko-'ti) PERIODICAL: Uspekhi fizicheskikh nauk, 1958, Vol 66, Tir 2, PP 301-329 (USSR) ABSTRACT: The present paper is an abstract compiled from 100 Soviet and non-Soviet publications. It gives a concentrated survey of the present stage of spark-discharge devices, their char- acteristics, and their theories. Chapter I.: Spark discharges in gases. Emission of radiation caused by the sloving-down of electrons in the field of positive ions (free-free tran~-i- tion), by the recombination of electrons anl ions (transi- tion from a free to a bo~lnd state), and by transitions from bound to bonnd states - enission of considerably broadened lines. 1. 1) 1-othods of producing spark discharges of high intensity: Connection between U0s C9 L, Qt, molecular weight of the gas, pressure; discussion of a pulne tube oith condenser ac- cordinr- _ to PrUngel (Fryungell) (Ref 11, J"ig 1), scheme of Card I/ diccharge circuit with condensers connected in parallel Pulsed Light Sources of Great Brightness S-IIT/53-66-2-6 (Fig 2, Ref 12); pulse tube with ceramic condensers (Fig 3) as constructed by Vanyukcv, Dobretsov, Isayenkof Mak - 28 U, 0*022 pF, OoO6 pH, to 4 kW; coaxial condenser according to Fisher (Ref 15), high-voltage toroid condenser (Ref 16); discharge circuit for large PU13eB and small L - investigated by KomelIkov and Aretov (Ref 20)$ construction of 48 different condensers -134 PF, operating voltage 650 kV and L = OqO25 P11; maximum current in the circuit 2.1.10 A. 1 2) Methods of measuring brightness and temperatures (Refs 152 2~ - 27). Measurement of temperature in spark dischar,-es (Refs 25, 28); photographic method (Refs 24, 27); lec- tric method 'Refs 4, 11, 15, 22, 23, 26, 29, 30-3251;Iojt)hOcto- chronograph ~Fig 6); photoelectric device for the measurement of brightness developed by Vanyukov, Mak, Parazinskaya, (Ref 22, Fig 7). Furthevaore, a number of theoretical investigations was discuased as e.g. the invectigation of the distribution of atoms and ionization in the channel of a spark discharge (Refs 22, 23, 29P 31) 32); investigation of the spectral dis- tribution of radiation (according to Planck's lav); KomelIkov and Parfenov (Ref 44) calculated the plagma temperat-ure in spark discharges a 2cording to the theory of -the pinch effect Card 2/ fiq (Ref 45): 21,TkT - I , where I denotes the discharge current Pulsed Light Sources of Great Rrii7 -66-2-6 /9 ~,ht -es s SOV/33 an-l IT, - the number of particles per cir. of Vhe length of t',ie discharge channel. 1. 3) The maximum degree of brightness attainable by means of spark discharll,es in Casea. SYstomatic inveo ti Ja t ions carried out by Vullfson, Libin, Charnaya (Ref 46), investit:ations of the saturation effect (Refs 22, 25); pliotoolectrio. methorls; investigation of the spectral intensity depenlenco3 on time in the individual parts of the di3charge channel (.Vigs ~1, 9), :h dependence on L (Fig 10) (Refs 22, 47); investi,-!ation of the intensity of spark dischar4,es in air (Ref 4G), in noble gases, nitrogen, oxygen, and helium (Ref 26), etc. Table 1 shovs L collection of valuesfor the temperature and brij-htness of various gases arvanged according to authors %nd refer- ences. 1- 4) Physical processes limiting the brightnesq of spark discharu"es (Refs 4, 15, 22, 2~, 26), X-el'dovich ('2effl 51, 53), Rayzer (lief 52); dependence of the abnorpt-ion coefficient of radiation on '1', formula by Kramers;(Rofs '17, '6; Fi,3 14): dependence of the spectral density of briF~.htness on A. Dolgov, 1.1andel'alitam (Ref 55) inv,'.aLigated the density distribution Card 31#q in gas in a spark discharge. Pulsed Light Sources of Great Brii;htness II. Spark discharges in capillaries (Refs 13, 101, 25, 59 etc.). Wiring scheme for partallel. nondenaers, C. - 100 uF L 1,5 01. Investigation of the optical propertieo ~f the plasr's n spark discharges (Refs 25, 29, 31, 32, 40, 50, 60, 61). Para- meters are shown in table 2. Investigation of the connection between temperature and voltage (Fit, 17, Ref 32); the influence exercised by the material of tube walls (Refs 52, 60, 62-64)- III. Sliding spark discharges (discharges between electrodes located on the- surface of dielectrics). Duration of flashes: 10- 6 _ 10-7 sec (Refs 65-74, 13) "Defatron" (10'_ 6oec, 200 J, 22 kV) wiring scheme for defatron sj~ark (IischirEe (.-ng 1a). IV. Electric wire explosions (the wire material over into metal va in th~ manner of an explosion, high terji~eva- Por6 ture plasma, 10- - lo-7 sec) (Refs 76, 77-87), determination of temDeratures: refererice3 28, 29 (20 000 - 30 000 0K); photo- metrical investigations (Ref 91); reference 91: T = 150$000 0K, V. Shock waves, Propa,~,ation of 9hock waves: Zelldovich, Ra,,rzer (Ref 53), further, references 92 - 97, del' ermination of the temperature of a wave front in inert gases etc. VI. Possibilities of further increase of te:.,.i)erat1ures, Short survey. Theoretically, it could be possible to attain tem.- Card 4/04 peratures of the order of 1090K (Ref 100). There are 20 fiGuresf 24(3) 'WTHORS: Vanyukov, Y. F., Yak, A. A. so -'.~/2 0-12 ~-6- 18/550 --------------- TITLEt ------ On the Temperature of the Channel of a Spark Discharge (0 temperature kanala iskrovogo razryada) PERIODICAM Doklady Akademii nauk SSSR, 1958, Vol. 123, ur 6, pp 1022-1024 (USSR) ABSEUCT: This paper discusses the results obtiAned by measuring the temperature of the channel of spark discharges in argon, xenon and hydrogen by determining the spectral density of channel brightness for wave lengths which correspond to the center of gravity of the lines. These measurements are carried out foT various rates of entering of the energy into the discbare~- channel. Measuring methods were discu3sed in a previou3 papez,. The measuring apparatus is discussed in short. The rLdiati-or. was investigated in argon for the linas 4806; 4348, ana 35E~3 in xenon for 2900 and 2600 A. The results of the measurements are shown by 2 figures. In the investiGated interval of variaticn of contour inductivity, the discrete radiation (lines) of argor- and xenon reached practically the extreme value. Continuous radiation, however, at < 4000 1 by far does not reach Card 1/2 'On the Temperature of the Channel of a Spark Discharge SOV/20-123-6-18/- ~0 saturation value. The continuous and the discrete radi~Ltiz)n o~' the discharge In nitrogen (p 2 atm) van inventi&ated in tho spectral region 400o-6ooo I Under these conditicrs, briChtness was saturated at wave lengths above 5500 X for continuous irradiation and also for all the investigated lines ( A 4097; 5001; and 5045 R ). According to Planck (Plank)'~~ formula for the irradiation of an absolutely black bu"Ay, tklh~ authors calculated the temperaturea which correspond to tl,.-; spectral densities of the brightness for those wave lines of the discrete and of the continuous spectra for which a saturation of the brightness was observed. The straggling ~f the. temperature values for various wave lengths 13 very especially for xenon and nitrogen. According to thes2 icquIti, the temperature of the channel of the spark discharEe only a small extent depends on the rate of entering of the enerf- into this channel. The distribution of the temperature over the cross section of the channel appears to be uniforra. The authors thank V. R. Muratov who assis-*,ed in carrying out some of the measurements. There are 4 figu:.-esand 9 references, 8 offtich are Sov.,,U4 PIU-SENTED: July 7, 1958, by A. A. Lebedov, Adademician SIMMITTED: June 27, 1957 Card 2/2 .21(7)' SOV/54-59-3-5/21 A UTHORS: U ny-uk*%-1_U.,F _j, Yermakov, B.A., Mak, A.A., Muratov, V. R. TETLE: Recording of the Variation With Time of the Contours of Spectral Lines in the Radiation of a Spark Discharge F3RIODICAL: Vestnik Leningradskogo universiteta. Seriya fiziki i khimii, 1959, Nr 3, pp 25-32 (USSR) ABSTRACT; In the present paper a three-channel photoelectric apparatus for the recording- of the variations with time pul3es of the discharge spectra is developed for a wide intensity interval. The scheme of the apparatus -J'Is represented in figure 1. The spectral decomposition of the periodic discharges was made by means of a monochromator according to Eberth and Fast with a plane diffraction grating fo:~ interferences of fiist order. The grating was constructed by F.M. Gerasimov in the GOI Laboratory. During the recording the gra"'ing slowly rotated. It was connected with an electron selfrecording potentiometer of the type EPP-0.9 over a synchronous transmitter. Tho angular velocity of the grating could be adjusted gradually from 60 -to 129 2-5, 0-5, and 0.1 X/min. The radio apparatus concisted of- three uniform channels permitting a simultaneous recording of Card '1/3 the spectrum at three different instants, i.e. the amplitude of Recording of tho Variation With Time of the Contours of SOV154-59-3-5121 Spectral Lines in the Radiation of a Spark D13charge the pulse obtained at the outlet of the electron trigger is proportional to the value average with respect to time At of the signal to be investigated for a given period of delay t 3 The pulses obtained are thus modulated according to the speetral radiation distribution of the pulse source for time These pulses arrive at a collecting scheme, subsequently at a'3* direct-current amplifier, and finally at the selfrecording potentiometer. The three channels recori in the time intervals 0.05- 0-45,asec, 0.4- 20/zisec, and 0.5- 50,psec. For the determination of the best working conditious the time of adjustment of the collecting element wa~3 varied. By means of this device line contours and also the 13hift of the mF-xima to- ward 0.1 R may be observed. The limit 61' the time resolving power with time is 5.10-8 sec. In the figures 2-7 the contours of the spectral lines of nitrogen and heilium in spark disch"rge tubes are represented. Herefrom it may lie seen that the lines widen mainly in the first stage of discharge (Fig 7) which indicates a Stark line widening. The maximum. concentration of Card 2/3 the charged particles is observed at the beginning of discharge. Reco.eding' of the Variation With Time of the Contours of ~ S07/54-59-3-5/21 Spectral Lines in the Radiation of a Spark Discharge It was found from the helium line 11 41386 1 that it is r~1018 CM3 . Also the arc discharge spectra of helium could be recorded. The observed asymmetry of the lines could be ex plained by 'he direction of the line shift. There are 7 figures and 7 references, 3 of which are Soviet. SUBMITTED: April 14, 1959' Card 3/3 -- yANEMYX.P.; MAK, A.A, Brightness of some pales, light sources. Usp.rmvuchfot. 6:31-34 '59. (KM 13:6) (Slectric disaharge lighting) KOT, M.P.; DDBRITSOV, A.F.; ISAYZM, V-1.; MAK, A.A. Powerful pulse light source. Usp.nanch,fot, 6;33-37 '59. (Alectrio discharge lighting) NIRA 13:6 ) (Photography, Flashlight) SOV/109-4-8-10/35 AUTHORSt Vanyukov 01 Mak, A.A. and Muratov, V.R. TITLE: Time Spectra of the Radiation of Spark Discharges in Inert Gases PZRIODICALt Radiotakhnika i elektronika, 1959, Vol 4, Nr 8, pp 1284 - 1285 (USSR) ABSTRACT: Some data relating to the time spectra of the light pul s in the spectrum bandwidth, ranging from 2 500 - 12 000 le were recorded by means of the equipment devised by the authors tRef 1). A detailed description of the equipmert was given in Ref 2. The time resolution of the device was 5 x 10-8 see. The spark di~icharges investigated w3re produced between spherical electrodes in tubes filled with argon, krypton or xenon; the pressure of the gas was 3.5 atm. and the inter-electrode distancewas 10 mm. The voltages applied to the tube were from 5 - 12 W, the storage capacitance was 0.01 to 0.05 pF and the circuit inductance was 0*1 to 12 IiH. It was found that the radiation of the discharge consists of a continuous background and a number of broadened lines, many of -hich Cardl/2 can be identified with the lines of single- and v" Soy/109--4-8-10 35 Time Spectra of the Radiation of Spark Discharges in Xnert Gases double-ionised gas atoms. If the storage condenzor is decreased, the line in the vicinity of X =-3 000 X is intensified. The lines of the double-ionised atoms appear during the initial stage of the discharge and are rapidly - attenuated with time; the Bingle-ionised atoms appear somewhat later and their attenuation is slower. There are 3 Soviet references, SUBMITTED; March 5, 1959 Card 2/2 "702 2"020 AUrMORSt Gran~,.kiy. V.L., Lk~yanor. . u., spim, . G.V. and Sirat.oke I G TXTLSi Report 0. the Second AII-0-i- C-nf.r..4o am, C-9 Zlectronic. elchnike I Iktr.nikO, 1959 PRUODXCALs Redio t Vol 4. Xr 5. pp 1339 - 1358 USSR) coaf.r.acap was orX.=I-.d by it.. A-3-U31R. the ABST&Wrt Th MI. mtry of Righr 3d.c.tion an4 Moscow state UcAversity. :, - 11*th T. o4o of Reducing the Ca&rgy %mat in the V or 11, Rr.&kdown-. OA GO * X d radLachargea and k* K. nvcl b-1 - ,~ ~ :~. L . ; t!!.: j Zlectrad" In UISh Vacuum'. T-A. SUmmor and Q.,F "tuboy - mlnv.stlg&tL*n or tao *F*4iasx"__~C Initiation aaa-Wevelopment of a 51gh-voltags Discharg. In Tacuuo,w. -8-X. R-YkhruAjd and -V- Ulm' tsl-.y- - -Th. Ch-moter- lztI4. of IS.Itla. I. ELLSU-oe"- In X.S..tjc 1PI.ld&,-. kjj-TArA_3.ji.& at al. dealt wIth the tra-for of the *~%ctrodo material during the fro-breakdown stag. In wax,mumm. 7:> *.a. Raeoxxv at aL. _rho Motion of of Xlectric Breakdown In Taco= . The third section dealt with the problems or electric spsZkx. serous and thoirpractical applications. It was Presided over by I.S. 3tokoLln1kow. The raLlowInig poper. war. road& T.X-LmxLL*v at al. ~ *PrOb* IUV4JBtjgAt1QU Of the A.C. C-me" FLel C.S. Alak A-A',a - w3lanentary Processes in the Zang of Co"aa-typ* Camduators at Atmospheric Prossuras*. "Appearance of a Corona Discharge In Hydrogen and ml rg*n" P.N. C14.tyA*., at al. Sea. Pr.p.rti.s or the Cora" - etem' lld~ic.l S C 1 d J EA . . o" lyEA41 rag.mI -gain ffy , y y ~ fol-d pp a of Discharge -1 M-N &rs";; 111:5 :A o osmur*. of at " a PIa n . I 10-3 - 1.0 me us- ;x. - 'Method. c uipis, zonimati.m or KLr By Mommai at Acro-I..i. ." (..a V 1333 of the Journal). ~Z~jfanjn&aX al. - mTj:v Spectra of the Radiation of X at &Spark DischarSo in Inert C~Aoxs (see P 1284 of the Journal). L I - :produeti n of IU&h ~.Ak or p 0L.c :r ~ Field aC p X&Ljjn afluenco of the Kra.tl- . an the Dividing Saf.c. of rwo Media Lria Jim;h:1 r S Stakollmlkow, . elfew Data Froo the Study of L,onx ProportLes of the Breakdown of Cosiprossed tr~ paratively UaLrarm Field I. the pr..~. or Locallood Non-umlformitL..'. teal-an .- ad 0'4-tll*gr.phlo ~ M;..u:po 1"t the Dl-c~arx. L,ags, I- rKalockri... to.. p 1-157 oi tn. jo.-44?. A paper by P.M. Zj~lutykh dealt with V.- probXes, of the basic theory or the electric I L omLom (seA p 1330 or the Th. fouxtb, .-tio. was V~..Id.d ever by 3.Tla. Lmlk-ym,nav am4 was aamermad, with the ~A-statioas" end low- fr.q.ammy d1scharg.., Th. r.11--L._ p:p.r. -or. r*.4s d A A L.b.d- - 'Th X.tur:ojof th..t -.,~-_Iphll Z~1.,gMctr zxpz oft an No I. ,Metal Wires. V.A. 31mamov - sPropacation of Plas=a Treat LooAl Pulse -Ob.. -,J 7/1S G.G. T7.;f.,., z .1. - of .. Slootr. fT-nAa_LCc_s1I`y~C%xmpr*sx*d Are by M-ns of an ILI actrom-opt teal Convertors. and or U.-Ilif.oZ 21 se tria Viejo E. ^7~ I.. end glsst~.. model of th A.M. AndrLanov at &I. Lbt-b-ition of KagnotLc and alsetri, A -P.Wi*rr. 1. Pu J:D Lee -9 (9-91.4d) "Sp..tr .... ,I. D.t-ftI_tLm lf tn; Plas". tt- Let.- I.. 1.326 .fI's j ur. ). Th- P-m by 11.rdi.g r,...d I-L of Laterest mad Ac d-ic _kd d the that "I . e1 tr be of f i'uv/bl -6-1-3/30 AUTHORS: Vanyalco,7, M.P., Yak, A.A., and Iduratuv, V.11. TITLE: Time Svc-,tra of ZmJ13rioA by Sparic 01schargan in Inart Gases (Vreiasnv-,.7a spektr,7 izlucheniya iskxovogo rarryada v inertnykth ga2akh) ftRiODICAL: Optlk:& i Spaktrockopiya. 1951), Vol o, lir 1, pp 17-23 (U SR) ABSTRACT; The presont paper desoribes time spectra of ttie intensity of emission by spherical puls e.-dis charge latpa filled -with argon, xenon and krypton, at 3.5 atm. The author sbidied tAe emission in the 2500-5500 region obtainable -,;ring various ccmbinatioas of capacitance and indtz-,tanee In thq -.~;Lsnkv-eging cir,%n~.4_ 1%a time spsctra were obtained with photoelectric apparatui., whose reaol-rlng power was about 5 x 20-Bsec, developed earlier and do&cribad in Ref 2. An Ebert- Faqti monoanraLat-ir, with a mirror objective of 320 mm diameter and a diffraction grating wilk 600 liner./M, was used. The relative spectral 5R-aviv1-.,lty of the apparatus was measured using a standard incande3s,enb lamp ~Raf 3). The absolute energy) scale for the intennity of oziesion was obtained -j by using an incandescent at 4140 , lamp moas noottral anisrgy density was kmown for that uivalength. Tna aps,~tral slit-widtha tuivl -were fram 2 to 20 1. The instantaneous Card 1/3 values of the emission intensity of Iyalso-lis charge lamps war* measurel S OV/ 51 - 6 -1 -3/30 Time Spectra of Emlasior. b,..r Sparle Disenarges in Inert Gases at varioun t:onei t, counted from the beginninK of the discharge. The first r9cord was always obtained Lwith the exception of curve 1 in Fig 5) at the moment, of tho max1m,;,m intensity of emission. Th* results of measurements are given in Figa 1-9 in the form of two or three energy spectra c,btainwl at various times. The results for argon are given in Fige I ana '.;, fcr 'krypton - in Figs 3-5. and for xenon - In Figs 6-9. The re-sults of these !igurei snow that increase of inductance in the d1scharge circuit redunes the intersity of continuous radiation and consequently the line, emission bacemes clearer. It vias found that in thn prat-op-~ of a spark discharge a continuous spectrum and linti of Youbly iccired atoma appear first. Later the intensity oz zuc auubly ionized lines iecrea8os and instead the lines due to ringly Ionizel stams appear in the sp&-Arun. The latter lines decay moro slowly. ttian tne contInuous background. 'rho spectral distribution Card 2/3 BOV151-t;-1-6130 Time 3 pectra of Emiazion by Spark Discharp8 in Inert Gfitaus (;:C tha ctntimao,:--i t;acicground diffar3 groatly from that exnacted of a bla.,.Ic Nmy and was rou-n4 to be oil- g1j&tly dqMojant on the wavelength. This affoct may be doe to aow-.auifOj-,,dty of' the tempera-wre (11.-ztrlbttiop. in rvirca of tne clischarge channel and aLA'..;c :11~e ro) -Ln the abRorpuion coefficient of this ais~~narj,.,,q plaime. In varivw. i~-,~,tral. ra.4.Lons. There are pros and Soviet roforow~cm. 9 fip SUERITTEDs Mar,h -~,. 1?r~., Card 3/3 VAIUMOV, 14.P.- TE%,i=V, B.A.; MAK, A.A.; WRATOV, V.R. ft --I- ~ -M-Wwii-w Record of the time variations of Opectral UnP contmirs in the emission froj a apark discharge. Yest.LGU 14 no.16:25-32 1 '59. (Spectrum analysis) (MIRA 12:10) 24 0), 24 (8) AUTiORS: 8-23-6 .612" Mak, A. A. 3 011/4 '1 TITLE: Maintenance of High Temperaturesby Means of a Spark Dischargc PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959., Vol 23, Nr 0, pp 962 - 964 (USSR) ABSTRACT: In connection with the development of light sources of high brightness, it is of E.;reat interest to find out how a maximum temperature within the spark channel may be maintained, and to obtain a picture of the temperature distribution in the mentioned channel. In the present paper the results of an in.- vestigation of the temperature within the spark channel., ob- tained by measuring the spectral intensity of the brightness, are described. The methods of measurements were pre-iously dc-, scribed in another paper by the authors (Ref 1). The invest-J- gated lines of argon, xenon, and nitrogen are &given. The ds;~- pendence of the maximum spectral intensity of argon an the in-, ductivity of the discharge circuit for 8 different wave leng-h5 is given in the diagram of figure 1 and similar diagrams fcr the other gases investigated were elaborated (Ref 2). Frcv. these data the temperature was computed by means of Plan,~kle Card 1/2 formula and the results are summarized in the diagram X Maintenance of High Temperatures by bleans of a Spark SOV/40- 23- 8 --6/2c Discharg-e figure 2. It may be seen from the results that the tempeiatiare within the channel is constant in a considerablE wide ran.we of energy source and that the limits of -14-his method of vcrk may be determined. The absence of a temperature gr-adii-nt wjth~r the spark channel, previously detectod by P. G.. ',nr! S. L. Mandellelitam (Ref 5), is mentioned in the further dig cussion of the results. There are 2 fig-area and 6 so-iet ref., erences. Card 2/2 -'r - -- - - - - - - V~ nmov 2 1-1. P. - HAKj- A. A. - Investigation of Spark Discharge Channel BrightresE in Variolis Cases. re-)ort submitted for: The 5th International High Speed Photography Congress, 'Washington, D. C. 16-22 Oct., 196o. VAMKOV, M.P., kand.fiz.-Mtem.nauk; 1WENKO, V.I., inzh. Load limits of s;ark discharge tutes. Svetotekbn1ka 6 no-3: 7-11 Ytr '60. (MIU 13:6) 1. Gosudarstvennyy opticheskiy inatitut. (Zlectric discharge lighting) 496%1f X2" FMODICALs ABSTRACT: Card 1/2 69271 8/051/60/008/04/002/032 1201/1691 '-kov, M.P., ~ ~kAA, and Iduratov V.R. An Invostigation of gark.Dischar in Hqiumi4 Optilm i spektroskop,&ya, 1960, Vol of Ir 4, pp 439-"5 (USSR) The authors studied the time dependence of the are and spark line contours emitted by a spark discharge in hellvm. The discharge v&4 produced by 2.5-10 kV pulses from a 0.05 p? capacitor (the inductance, L, of the discharge circuit was 0.16 or 3.6 or 25 VE). The sparks passed through a discharge tube filled -with helium of industrial purity at a pressure of 2.6-12 atm. Emission was recorded in the wavolength region 2500-5600 A aoisler discharge tube war. used to produce a calibration spectrum. It was found th&t in the jnWal stages of the discharges a strong continuous baftround was emitted, superimposed on which there were two intense spark (He II) Unes at 4686 and Z203 (Figs 1 knd 2). Are lines of helium (He I at 3188, 3889, 4470, 11471 and W16 1. of, Fire 3-6) appear later, about 0.3-0.6 psoc from the beginning of the discharge. Both the spark and the are lines witted by these discharges were strongly broadened and displaced due to the Stark effect. The asymmetry of the are lines was due to their ---s 7- 04. O-r 85051 S/0,51/60/009/006/'Ol 5/018 50 40 E201/B191 AUTHORS: Ba a shQX.,~F. Va 11ya4g-Z M,, PMura tov. V, R and Hilo-v, Ye.V. TITLE: Image-Converter Recording of Spark-Dischar Spectla Resolved in Time and Along the Channe ross-Section PERIODICAL: Opt.1ka 1. spektroskopiya, 1960, Vol.9, No,6~ PP 790-791 TEXT; The authors describe a method of recording rapidly changing spark-discharge spectra using small portions of the discharge r;hannel. The apparatus Is shown schematically in Fig.,l. Light proceeds via a. monochromator M and is projected by a lens 04, on the photocathode of an image converter -)on (EOP) fitted with an electronic shutter, The shutter Is connected to a generator of square Pulses 3. The generator Is synch.-onized with the discharge by meanj of a photomultiplier 1 and a sy.nohronization circuit 2. In this way one obtains a spectrum on the image-converter screen at a time governed by the delay between opening of the electrcnic,. shutter and the beginning of the disoharge, Exposures can be ,,raried from 0.1 to 10 psec Pnd Card.- 1/2 85051 S/051/60/009/006/015/018 R20VE191 Image-Converter Recording of Spark.-DI s charge SpectTa Resolved i--l Time. and Along the Channel Cross-Section spectra. can be recorded 0.07 t-:~ 25 1 ~seo from the b9ginnIng of dAscharge. The imaga-converter screen is photographed wlth a ~~:amera, denoted by t in Fig,1. The method was appl.led to a. 10 kV 6ischarge across a. 14. mm gap in alr8 N I~ N II, and 11m lines were recorded 1, 5 *, 10 and 21 pse:~ from the beginning of the discharge (Fig.2'1). There are 2 figures and I references: 3 Soviet and 2 Engligh., SUBMITTED: June 22, 1960 Card. 21L 8603& 1 a(0. Al?/3 S/020/60/135/003/013/039 B019/13077 AUTHORS: Vangkov, M- P., Mak, A. A., and Sadyko a, A. I. AVN TITLE: The Maximum Brightness of a Spark DischnLielChannel PERIODICAL: Doklady Akademii nauk SSSR, ig6o, vol. 135, No, 3, PP, 557-559 TEXT: The authors ' investigated the maximum brightnet!9 of a spark dis- charge channel int-a on,11nitrogen, airandVelium at extreme high current -E& - surges (U/L~~ 101 2a/sec). The high-pressure chamber used for these tests was developed by V. R. Muratov. The light was obtained through a special window. The discharge circuit consisted of the following parameters: C a 0.1 - i,0 microfarad, L - 4 - 6 henry, and U = 2 - 10 kv. The dis- charge gap was 1.5 mm. In the range from 4000 - 9000 A the continuous background was studied,also the lines He II with 4686 A, Ar II with 4348 A, N III with 4097 A, and N II with 15045 A. The results show that the maximum brightness depends on producing an opacity of the discharge channel. With an increasing current surge the opacity will first appear in the red part of the spectrum and shift over to the blue part as the Card 1/2 W34 The Maximum Brightness of a Spark Discha..-ge Channel S/02~60/135/003/013/039 B019 B077 surge increases. With the above-mentioned parameters of the current circuit opacity is easily obtained in heavy gases. The authors mention the relation between atomic weight and pressure of lChe gas which will produce a maximum brightness. The theoretical results agree very well with those found experimentally. There are 2 figures, 1 table, and 9 references: 6 Soviet, 1 German, and 1 US. PRESENTED: May 25, 1960, by A. A. Lebedev, Academician SUBMITTED: May 20, 1960 Card 2/2 -ANDREYEV, S.I.; VANYUKOV, _M.F. I , 16-7_ :L07888 cord LquiFment for producing light flashes of a duration. Prib. i tekh.eksp. 6 no-4:76-79 Jj--A9 161.(RIRA 14:9) 1, Gosudarstvennyy opt.,cheskiy institut. %Electric discharges-)-, 20728 S/05i/6i/oio/oo4/oo6/OO7 (44r0 113rr,11L11) E032/E314 AUTHORS: Balashov., I.F., V Ifuratov, V.R. and Nilov, Ye.V. TITLE: The Recording of Time-resolved Spectral Line Profiles by Means of an Image Converter PERIODICALt Optika i spektroskopiya. 1961, Vol. 10, No. 4, PP. 540 - 541 TEXTs The present authors point out inRef. .1 that the image-converter method can be used to record time-resolved spectra of various parts of a spark discharge. The present note reports results obtained with this method in the recording of time-resolved spectral line profiles. The method has the advantage that a single flash is sufficient to record the profile. The apparatus employed is said to have been described in*Ref. 1. It incorporated the (ISP-51) spectrograph with an 800 mm foca! length camera. The image-converter was switched on by I 4s pulses at different times after the onset of the discharge. The image of the spectral line was photographed from the image- Card I /,#Z 4 Optika i vptkf r0s)Copiya , 116o, Vc 1, No, 61 pp 71o-'791 20729 S/051/6i/olo/oo4/1oo6/O07 The Recording of E032/E314 converter screen with a 1;1 magnification, using a photo- graphic objective with a focal ratio of 1:1.5, Fig. 2 shows the distribution of the intensity at the centre of the H OL line across the channel of a spark discharge in hydrogen. Fig. 3 shows the H a profile emitted by the central zone of the channel. Preliminary calculations show that by using the highest-sensitivity image-converters (Butslov et al - Ref. 6) and with an intensity corresponding to the saturation region (Vanyukov and Mak - Ref. 7) the profile of the spectral line can be recorded with a spectral resolution of 0.1 A with an exposure of 1 nsec. There are 3 figures and 7 references; 6 Soviet and 1 non-Soviet. SUBMITTED: October 14, 1960 Card 2/3 -VAITMOV, M.P,; MURATOV, V.R4; MUKHITDIIIOVA, I.A. zl~ Tim radiation spectra of spark dischar es in inert. gases in the region between 5,000 and Xpo(Y~ 1. Opt. i spektr. U no.3:312-318 3 161. (MIRA 14:9) (Electric discharges through gases) (Radiation) ANDREM. 3.I.; VANYUKOVI M.P. Using a spark discharge for producing intensive scintillations of a duration of 1o-7 to 10-8 see. Part 1. Invostigation of electric processes in a spark diqdharge of nanosecond duration. Zhur.tekh. fiz. 31 no.8:961-974 'Ag 161. (MIRA 14:8) (Electric discharges) (Scintillation (Pbysics)) (Oseillography) ') 156 S/l20/62/&b/GO3/020/048 3,7- a 0 e". 2 3 of, 7- 96 1~ E039/EJL35 AUTI-IORS: Andreyev, S.I., ~anyukov, M-P and Serebryakov, V.A. -L-- I TITLE: The use of ferrites for the generation of powerful high voltage pulses of nanosecoxlq duration Ve" PEi~IUDICAL: Pribory i telichnika eksperimenta, n1-3, 1962, 89-92 ,m%I.T: Tho characteristic sharp change in the value of the mtagnetic peri-iiazibility ~i of f(;rrites with increasing magnetic field causes the ~;oa--,ri,,tion of a high. voltage pulse Up when a ferrite,element is included in a spark discharge circuit U ',(t) di p 0 dt where: LO is the inductance* of the ferrite element at ji = 1; di/dt is the rate of change of currant in the circuit. The ferrites (:-.~i,Zn) 1>-6co (F-6oo), :t-looo 0,~-iooo), 4)-2000 (F-2000), (NI-Zn) M T -2GOO OiT-2000) and f erritas with rectangular loops, are investigated. There appears to be little difference between the voltage pulses obtained using Ni,Zn group and the ferrites with rectangular loops. Amplitude and duration characteristics of the Card 1/2 The use of ferrites for the generation.. S/120/62/000/003/020/048 E039/E135 pulses produced by the ferrites F-2000 and W-2000 are investigated in more detail. It is shown that voltage pulses of - 10 kV and lastin- a few nanoseconds can be produced acroiss a 100 -n- resistance using F-2000 (i.e. 1 Megawatt pulse) with a discharge capacity of 3300 )if and inductance 0.1 lihenry. Pulse lengths of -30 nanoseconds are obtained usinS the ferriti3 MT-2000 but at a much lower voltage. The effect of circuit parameters on amplitude, duration andfrequency of pulses is described in detail. There are 5 figures. ASSOCIATION: Gosudarstvennyy optichaskiy institut (State Optical Institute) SUBMITTED: September 21, 1961 Card 2/2 ANDREMI S. I.; VAHMOV, M. P,; DANIEL', Ye. V. Method for reeording the radiation spectra of a prulve dimebarge vitb a time revolution of 10-8000. Opt*', i spaktr. 13 no.6: 863-865 D 162. (MM 16:1) (Osoiliography) (Electric discharges) 03 L9 6/032/001 /ooa/ol a S/ 5177 BI 46 BI 12 AUTHORS: Andreyev, S. I., Vanyukov., vI. ,El Komolov, A. B., (Deceased) TITLE: Development of the spark discharge channel with very steep current increase in the discharge circuit PERIODICAL: Zhurnal tekhnicheskoy fiziki, V. 32, no. 1, 1962, 57-62 TEXT: The authors experimentally study the validity of the hydrodynamic theories on the development of a spark discharge channel by S. 1. Drabkina (Ref. 1: ZhETF, 21, 473, 1951) and S. I. Braginskiy (Ref. 2: ZhETF, ~4, 1548, 1958) fo~r_a very steep current inc.:ease in discharges up to I joule in air. Data on the widening of the spa:rk channel were recorded by an electron-optical converter type IMM-3 (PIIA-3) with oxygen- cesium and antimony-cesium photocathodes. The authors operated with 500-7500 pF capacitors, a voltage of 3-23 kv, and an inductivity of the discharge gap of 10-80 nHy. It was shown that the hydrodynamic theory by Drabkina agreed with the experiment in the first quarter of the oscilla- tion period only. For later periods, the theoretical values o-f both the channel width and the widening velocity are too high. The values of the Card 1/2 ~!948 S/057/62/032/00',/008i/018 Developnent of -tile spark discharge ... B146/B112' channel width according to Braginskiy, however, agree with the experiment, even after more than one period. The radiative energy losses are not expressed in the formulas by Braginskiy; therefore, the good agreement of his theory with the experiment gives proof of the low effect of radiation toe on the channel development. The widening velocity of' the channel in the initial stage of discharge agrees in theory and experiment, attaining 10-12 km/sec; at the end of this stage, which corresponds to the period of growing electrical conductivity and lasts about 5-10- 9 sec, the amperage attains the value of 300-600 a for discharge in air under atmospheric pressure and an electric breakdown voltage of 30-40 kv/cm, while the channel radius is 0.05 mm. There aire 4 figures and 11 references: 10 Sdviet and 1 non-Soviet. The reference to the English- language publication reads as follows: H. Fischer J. Opt. Soc. Amer.,~L79 981, 1957. SUBMITTED: March 22, 1961 Card 2/2 34209 S/057/62/032/6o2/m/022 21. ~Y311 B124/Bl()2 AUTHORS: Va. F., and Isayenko, V. 1. TITLE; Study of light emission from the electric explosion of thin wires PERIODICAL: Zhurnal tekhnicheskoy fiziki, V. 32, no. 2, 1962, 197 - 201 TEXT: The development of thecloud of explosion priducts and of light emission in electric explosions of different wiros was studied by using electron-optical devices. Current pulses were cbtained.by discharging a 20,,*f capacitor bank which had been charged up to 10 kv.. The inductance of the disoharge circuit was O.5q/Ah, and the steepness of current rise was 2-10 10 a/sec. It has been shown that the propagation rate of the front of explosion products increases with increasing diameter of the exploded wire and with a decrease of its length, Light emission originat,.as in the narrow channel between the shock wave and the dense cloud of explosion products. The channel propagates to cover the whole surface of the ex- roducts. Gas and vapor temperatures behind the shock wave front 3342G9 5/057/62/032/002/010/022 Study of light emission B120102 3 o reach 4-10 K and more, which leads to considerable ionization of the metal vapor giving rise to discharge. The time between the moment when the current passes through and that when the cloud begins to expand is proportional to the diameter of the wire and independent of its length, The time lAg between the moment when the cloud beginE to form and that when light emission starts increases with the wire length. Its dependence oil the diameter is complex. At an explosion velocity of 2.5 to 3 km/se..-;, light emission sets in almost simultaneously with the explosion. Explosion of a wire takes place at a current density of about 5-10 7 a/cm2 irrespec. tive of its diameter, This value is in good agreement with previous re- sults., Wires 0.1 to 0.2 mm in diameter exhibit a marked change in propa- gation velocity of the cylindrical shock wave at the moment when the glow covers the whole surface of the cloud of explojion products, As to the differences between the shapes of glow channels in spark discharge in air and in an explosion of a wire caused by current fluowations in the dis- charge circuit, it has been concluded that, with the rapid increase of current from the second halfperiod onward, a shock wave is generated. which propagates either through the heated gas, or through the heated metal va- Card 2/3 34209 S/057/62/032/002/010/022 Study of light emission B120102 por. Since the least ionization potential of air gases is above 13 ev, while that of copper vapor is 7.7 ev, it is quite natural that secondary shook waves give rise to more intense glow than that effected by the shook wave due to spark discharge in air, When the current in the circuit of the exploding wire is periodically changed, the glowing metal vapor forms hollow cylinders propagating at the rate of 20 to 30 km/sec. N. N. Dmitri- yev and V. I. Druyan are mentioned. There are 5 figures and 10 references: 6 Soviet-bloc and 4 non-Soviet-bloc. The reference to the English-language publication reads as followas Exploding Wires, Edited by W~ G. Chace and H. K. Moore, Plenum Press, Inc., New York, 1959- SUBMITTED: April 26, 1961 Card 3/3 s/05Y62/032/003/017/019 B142 B 102 AUTHORSt Vanyukovp 11. P., Isayenkop V. I.j and Travleyev, 0. N. TITLEi Discontinuities in the spark channel which develope at high repetition frequency of discharges PERIODICAL: Zhurnal tekhnicheskoy fiziki, v. 32, no. 3, 1962v 37.2-374 A -0 TEXT: Irregularities occurring in high-frequency spark discharges in the'spark channel were studied. The sparks were photographically examined in an ~'.L-500 (ISSh-500) lamp filled with xenon of 4 atm. The discharges were 'Ailmed (running speed of film, 40 m/sec). The inage scale was 10. The frequencies used were the limits at which the studied phenomena appeared. At f - 400 cps, the position of the spark channel between the electrodes is stable. The appearance of the channel is determined by shape and arrangement of the electrodes. At f u 2000 cps, the channel bends considerably and takes a different position with every discharge. With bozh frequencies, the mean power was approximately the same (130 watts at 400 Cps, 160 watts at 2000 cps). Points of discontinuity appeared in the channel at .3- ~-'4-kcps. The channel seemed to be interrupted, Card 1/2 S/05 62/032/003/017/019 Discontinuities in the spark channel ... B142YB102 individual points of intensive glow became visible. Several discharges may occur in one channel. The paint of diacharge may shift along the channel with every discharge (velocity of shift - 1-2 m/400). 301nutimen, the discharge zone broadens near the electrodes. An fntense afterglow occurs in the discharge zone for 50-200,ttseo. This afterglow is assumed to te caused by metal vapor (evaporation' of electrodes) which has a much lower ionization potential then the other gas. The winding path of the spark is explained by clouds of heated gas which form in the channel and along the boundaries of which the spark runs. These local hedtings cannot be eliminated between the individual discharges since high pres- sure gradients are missing, and convection is only sufficient to shift them. The discontinuities in the spark channel are explained by the fact that in gases of poor deionization capacity the current does not flow through the narrow channel but throuCh a w-ALder gas zone. Thus, the current density is lower in these sections.and, with it, also the luminous intensity. In air,,these phenomena were not observed, even with frequencies of up to 20 kc/sec. There are 3 figures and I Soviet reference. SUBIMITIEDt June 14, 1961 Card 2~2 S/057/62/032/006/Cl5/022 B108/B102 AUTHORS: Andreyev, S. I., and Vanyukov, 114. P. TITLE: The use of a spark discharge to produce intense light flashes lasting 10-7 - 10- a sec. 11. Optimum relationship between spark energy in air and duration of the light flash PERIODICALs Zhurnal tekhnicheskoy fiziki, V. 32, no. 6, 1962, 738 - 745 TEXT: The effect of the discharge parameters on the speed and duration of energy delivery in a spark channel was studied in order to arrive at the optimum relation between discharge energy and length and intensity of the re.�ulting light flash. On the basis of earlier work (7,hTF, 31, 9061, 1961) it was established that under stiff discharge conditions 85 95% of the total energy stored in a capacitor is delivered in the first semiperiod of the current oscillation. This fraction is determined only by the degree of the discharge y - U 0/L(di/dt) max* An inorease in dis- charge energy through raising the operating voltage entails a decrease in the ovarall duration of the electrical process. However, the duration of Card 112 3/057/62/032/W/ol5Xe~2 The use of a spark discharge ... BIOB/BI02 the light flash always increases with the discharge energy. When the discharge energy is given, the discharge time will decrease as the capacity, is reduced and the voltage U is increased. An increase in discharge energy when its duration is ~o remain unchanged can be achieved only if the discharge gap is prolonged. Aperiodic spark discharges in air with a length of the electrical impulse of 20-10-9see were got at discharge ener- es of 0-13 joules. Such a discharge produces light flashes of (40 - 45)-10-9 see. '47hen the length of the spark channel is given, a definite relation exists between the duration of the flash and the-maximum ene:~,-y which can be set Afree in the discharge circuit. Experimental data are ziven. There are 4 figures and I table, 3Ub;,IIT7'ZDs June 13, 1961 Card 212 S/057/62/032/oo6/ol6/022 B108/B102 AUTHORSt Vanyukov, M. P., Isayenko, V. I., and Travloyevp G. N. TITLE: lRecovery of t"he electrical strength of a spark gap in repeated discharges PERIODICAL: Zhurnal tekhriieheskoy fiziki, v. 32,-no. 6, 1962, 746 - 75~ TEXT: The range in which the voltage of a spark discharge can be controlled and the limiting load of a spark gap were determined. The recovery of a gap as depending on the frequency at which the discharges follow was examined. It was found that in the first 10 - 15,~,seq after the discharge has stopped the disruptive strength of the gap remaina virtually unchanged (200 - 40%j v). The disruptive voltage is only slightly dependent on the Cap length. The subsequent stage of the process is the collapse of the channel sheath and becomes obvious in a rapid rise of the disruptive strength owing to the cooling of the gas. Strength in this stage increases at a rate of 50 - 120 V//,Isec. The stage with low disruptive voltage is longer in xenon than i-i air. This is due to the greater mass of the xeron atoms,-mj~ich sustain the channel after the end of the discharge for a Card(-1/29 3/057/62ltO32/006/0161;022 Recovery of the electrical strength Bloa/Bio;! longer time'than in air. Extreme recovery rates (up :o 125 v/r se-) at very high frequencies are due to a decrease in energy of each individual discharge and to inhomogeneities in the gap. At too high frequencies, the strength is either lost completely (continuous discharge) or causes an un3table oDeration. If the gas is blown through the gap the power per unit length of the channel can be increased considerably (up to 400 wattM- At high frequencies, however, blowing has no essential. effect an recovery.: This is obviousl~r due to the fact that the E:as at the moment of discharge is in a state of intenSG movement. There are 6'figuros. SUBMITTED: July 24, 1961 sk Card 2/2 ANDREYEV, 6114 uv-~~Ov STAROVOYTOV, A.T. Effect of an external magnetic field on the litait chwaracteri s tics of a pulsed discharge in helium. Zhur. eksp. i te.)r. fiz. 43 no.3:804,807' 062a (MIRA 15-10) la Gosudaratvennyy opticheskiy institut. (Magnetic fields) (Electric discharges through gares) (Helium) ANDREYEV., 8.1 - VANYUKOV M P.; STAROVOYTOV, A.T. F.ffect of an extermal magn tic field on the development of a pulsed discharge in argon, Zhur. eksp, i teor. fiz. 43 no-5:1616-1,618 N 162a (MIU 15:22) 1. G~udarstvennyy optiaheskiy institut imeni S.I. Vaviloira. (Electric dischargpe through gases) S/120/62/000/002/029/047 E192/E382 AUTHORS: Andreyev, S.I., Vanyukov, M.P. and Daniel', Ye*V. TITLE: Increase in the-intensity and reduction of~the duration of a light burst radiated by a spark discharge PERIODICAL: Pribory i tekhnika oksperimenta, no. 2, 1962, 127 - 129 TEXT: The discharge system which was Inlrostigated e;:p criment ally is shoini in Fig. a. The tube contains 5 metal plates 1 , which are in the form of steel discs, 0.2 mm thick and 12 mm in diameter. The centres of the discs are provided with brass inserts 2 , whose heads are hemispherical and have a curvature of 0.2 mm. The plates are furnished with sector-shaped apertures As outlets for the light. The discs are kept in position by means of the dielectric cylinder 3 which is also provided with an aperture. The spacing between the discs is determined by the thickness of the dielectric wasl hers 4 , the dielectric being perspex. The system is mounted between two massive brass electrodes 5 . The overall Card 1/ 3 S/12o/62/000/002/029/o47 Increase in the intensity e-ev E192/E382 length of the air gaps is 4-3 mm. The discharge is initiated under the following conditions (Ref- 3 - the authors - Z11. teklin. fiz., 1961, 31, 961): capacitance of the condenser C = 0.015 -ILF, voltage U = 15 IcV and inductance of the circuit L = 11 n1-1. Tho'constructional details of the circuit were described in Ref. 4 (paper read by the authors at the Second Conference on High-speed Photography and Cinematography). The experiments vrere carried out with single discharges in air-and the electrical and light characteristi-cs of the discharge were compared vrith those of the similar characterics of a normal air gap, 4.9 nri long. It was found that the discharge was oscillatory and that the presence of a number of metal plates in the gap resulted in an increase in the gap resistance. The measurements also showed that the additional metal plates led to a 300,'0' reduction.-in the duration of the light bursts and a 1.8-fold increase in the intensity of the light emitted per unit length of the gap (when compared with the performance or a normal gap). This increase in intensity and reduction in duration of the discharge was observed over the whole investigated spectrum Card 2/3 S/12o/62/000/002/029/047 Increase in the intensity E192/9382 from 4 000 - 6 400 A.' The spectral-density distribution was unchanged by the presence of the metal plates. There are 7 figures. ASSOCIATION: Gosudarstvannyy opticheskiy institut (State Optical Institute) SUBMIWED: July 29, 1961 Fig. a: Card 3/3 5 All" VANYUKOV.- 11. P. - Sixth International Congress on High-Speed Photography. Zhur.nauch. prikl. fot. i kin. 8 no.2:157-158 Mr-Ap 163o (MRA 16:3) (Photography, High-speed-Congrebses) 34023 8/056/62/042/001/048/048 3 /,5,0 ~lo t/ ~, Iq 9 2-,3 B142/B112 AUTHORS: Andreyev, S. I., TITLE: "Channel propagation of strong miniature sparks" Remarks to the article by B. A. Demidov, Yu. F. Skachkov, and S. D. Fanchenko PERIODICAL: Zhurnal eksperimentallnoy i il-oreticheskoy fiziki, v. 42, no. 1, 1962, 309 TEXT: The conclusion drawn by Demidov, Skachkov, and Fanchenko as the result of their studies on spark discharges of capacitors of low capacity~ that the spark channel expansion at a rate of 60-80 km/sec is doubted. It is supposed that the substantiating picture does not represent the very spark channel, but the stage of streamer discharge preceding the channel propagation proper (analogous to the picture taken by Saxe and Chippenda14 Final studies on the propagation rate of the channel are still necessary. The lines of investigation persued by Saxe and Chippendale should be followed. Also the rate at which the amperage is supposed to increase at the beginning of the discharge is considered too high for the investiga- Card 1/2 "Channel propagation of ... 34023 3/056/62/042/001/046/048 B142/B112 tions made by the authors with the use of 500-5500 pF capacitors with hard sparks of 0.01-1.0 joule show, that the maximum of the amperage, which depends on the resistivity in the spark channelo is reached only a few nano seconds after the beginning of discharge. Since here only capacitors of low capacity are concerned, the current is expected to increase even more slowly than was found by the authoxa. There are 4 references: 4 Soviet and 1 non-Soviet. The reference to the EAglish- language publication reads as follows: R. F. Saxe, R. A. Chippendale. Brit. J. Appl. Phys., 6, 336, 1955- ASSOCIATION: Opticheekiy Inatitut im. S. I. Vavilova (Optical Irastitute immi S. I.. Vavilov) SUBMITTED: April 25, 1961 Card 2/2 VANYUKQY* M, .. kand. fiz,ma%lem.nauk- ISAYENKO, V.I.,, lnzh.; TRAVLEYEV, .9, 1 G.N., inah. Regulation range and load Iiialts of high-pressure stroboscopic pulse lamps. Svetatakhnika 9 no.8t20-23 Ag 163. (MIRA 16:8) 1. Gosudarstveanyy opticheskly institut. (Electric lamps) 7--63 Jix)0 L LA F 0 C LA NTL/ 5 S D - - F 1 - 4 A o4, -G G /J H BH ttlq -ASD iADC j Bat JWJ0000%14 AUTHOR: VaArikov, m. P.; Isayenko, V. I.; LY11bimov, Y,--L TITIE: Tim vwriation of the SPectrMl cOMPOzitioA-)f the emission of the ruby, laser ika i apektroakopiya, v. 14) no, s, 1963, 7'34-736 WMCE: opt TOPIC TAGS: ruby laser emissionp ruby laser spectrum 'h ru TEX11; Time-sequence Photographs of the emission lLae qpe,.,t.-im of t. e by laser bave been obtained. The spectral lines ware sepe:mted by a Fabry- Perot.interfercmeter and detected bj an electron-opticaL Jinage converter. Various ruby sapples were used in the laser, ezd the irx-.erferometer base was varted from4 to 25 nn. The pumping energy of the laser was also varied. Pho";raphs show that the energy of the laser pulse can consist of one, two, ar three lines and that emission vavelensth can vary from 1/2 Card L 10078-63 ACCESSION NR: AP3000594 t pulne to pulce 1ritbin an InUrval of 0.2 Angl3trom, viti, 1-10 apparent regularity. Tht results coincide with those obtained by- 1D.,ghes and by McMurtry and Siegroan. Orig. art. has: 3 f igitres. L 18854-63 EPF(C)/EWT(I)/EWP(q)/EWT(m~/BDS/EED(b)-3 AFFTC/ASD/ AFMTC/RADO/APGC/IJP-(;)/ASD.-.-,Pr-4 ja A=SSION HR. AP3003958 S/0057/63/033/007/0859/0863 AUTHOR: Andreyev, S.X.; Vanyukov, M.P. TITLE: Investigation of the influence of afterglow on the duration of ultrashort light flashoyroditeed by spark dis&Arges SOURCE: Zhurnal tekhnicheskoy fiziki, v.33, no.7, 1963, 859-863 TOPIC TAGS: light flashp spark discharge, high-speed photography, nanosec light source , He, Ar,, N, helium, argont nitrogen ABSTRACT: In recent years a number of investigators have reported obtaining nano- second light flaf;hcs from spark discharges in air, hydrogen and nitrogen. Spark discharges in inurt gases, which have a high light yield, tire not used for obtain- ing brief flashes owing to the persistent afterglow of such gases, But actually the reports of different experimenters on the total duraV,an of light flashes in inert gases are conflicting. Hence It was deemed of Into'_,zist to undertako a sys- tomatic investigation of *the role of afterglow as regards the duration of light flashes appearing as a result of high-power nanosecond dischargeu in di.'foront In- ort gases. The Cases tested were Ap He and K2. The discharges were realized in a Card 11,0.2,,, L 18854-63 ACCESSION NR: AP3003958 circuit with a C -a 900 pr capacitor ut voltages V f rom 4 to 25 W. The entire cir- cuit was mounted in a sealed chamber which was f illed with the investigated gits at different pressures to 25 atm. The discharge current was recorded with a time re- solution of 10-9 sec; the discharge radiation with a resolution of 3 x 10-9 see. ..The afterglow time tag wan determined as the difference between the flash time tf, measured at 1/3 the peak intensity, and the total duration t. ol the discharge cur- rent. Oscillograus show that Ue electr* processes in the gap depend on the na- ture of the gas: discharges i;rA_pnd H ~ In. N2 are oscilictory. eAre aperiodic; those to for A and He is shorter than for N2--);/Curves for tag versus the rate of energy release in the gap are presented. *AT low discharge energies (under 0.01 joule) none of the testel gases exhibit afterglow. Increase of tag with discharge pc7ter (and rate of oner-,Py liberation) is greatest ir, A, aad very wealc in ';2. With Jn- creasing pressure tag increases in A, but not in He and K2.. WLth iricrease of the [:ap width tag dec.,eases in A, but remains virtually constant in He am' -'42. T12 us, .Por discharges in argon one can reduc,~ the aftorglov time and -;otal emission lima .X. by reducing C and increasing V and the gap wieth. 31onsoquantly, flashes of t1o same short duratian as in N2 can be realized In He wA A, but only tt great arcri- -.fice in intensity. Orig. Art. hast 4 figures and l.table. C,Ord 21p.2, ALI .j: T= VA92=0 07 =LCM-614100=5=10ri or Ift-DOM OYA03 IAW VJT?Wdl, i:U9S;Q Vaayukov, V. I.. Isayeako, and V. V. Lyubimov. Zbuxnal eksperimontallnoy i tooraticheszoy fiziki, v. ", no. 4, Apr .1,963, 1151:4152 S/056/63/044/004/OC,6/044 h. e ,xiation of the spectral composition of the output of a neody=ium.- ~.dopee. glass laser with tIme is iavestigat~ed. A glass cylinder 60 = long and 3 *T=, in diameter containing ~4 Nd2O3 was used. A spectral dispersion -ot-14 adc mplished by a_dIfrra__ -sad-the-tim" -reso_ ou wash -ers-of see .:-Mie-results,-with-superthresbold Iti" 1 5 pumibing pow _bj mic are showa in the illuntratica. The simul- taneous production-of several lines with superthresholA Punping ywer is -__.exp2ained as due to the establishment of populatioa inveraLon for several pairs of sublevels at the same time. 6 June Tl:-2- VARIATION 02 SPEC-4= COMPOSITION (Cont'd] S/u56/153/044/004/OC6/044 Pz -0 513, 7 Oc Card 2/2 L 10524-63 FdA (k )/F-5D/T-- /3W',1,!BD5/F-E-Cf b VA : ~ MDIM3/t~ "DID 6/0056/63/04/003/1493/1496 D 1 7 AUMCM: Vamyv1wr,,MP.; Isayenko, V. I*; Serebryakov, Vo tko TrM t ImestieAticu of directivity of emission of an optical quantua generator SOURCE-t Murnal ekspero I teoret, flzlki,, vo 44,, noe 5, 1963, 1493-U96 TOPIC TAGSt IaAer, - qpissfon directioni - rod cross cection, neodymim-dom-ed ABSTRACT: Neodymium-doped glass ro&-.w1tb cross secticw of various shapes have Ueen studied !,g deteralne the effect of the shape on the direeticnal properties of laser emission. The polished eads olf the somples received e. dielectric coating. The semples were p=IA,--d by ~vo _?a1ped lan- -tni t.-*rl-- The distribution- c0011Ution zones - In the rod was Photographed. - The results chow the stimulated emission frcm rods of aquare,, rectangular, and octagonal cross seaticn, can be '01.!opagmted La several di5crete directiona. The preisence of these directions is Mm I (1)/EWT(m)/EWP(t)/EWP(b) rJP(c) J vrr I E ACC-R4 AT6001393 SOURCE MDEs UR/3160/64/009/000/01IS/011S AUTHOR.-=Vanyukovi--H~=P#=(Canadate -of physico-milthMatical-sclonces) 9 r n4we TITLZt Study of pulsed light sources of limiting brightness SOURCE: AN SSSR. fl UspekhL, asuchnay lotogran =,V. 9, 1964. Vysokeekorostnaya f6tograftya I kivenatograflya (High-speed photography and cinematography), US TOPIC TAGS: light source, gas discharge spectroscopy, helium, nitrogen, arrgonq _-7- --optic-:brightness -------- - --- ---- ABSTRACT: In order to determine itse limiting brightnesses of pulsed light sources?7.1 the -brightness of the spark discharge channel- was studied- 11n am-atmosphere of helium -argon, nitrogen, and-air at high rates of current buildup An the discharge. To this end, a discharge circuit based on a low-irduction cylindri;:&! capacitor was develop- ed. Measurements of the n-pectral density of the dischargo channel brightness were based an the continuous and line emission In the 4000-9000 A range. In all gases . - studied, the limiting brightners was successfully obtainedi It was found that undor- limiting conditions the di3charge channel is opaque and radiates like an absolute black body with a t perature equal to that of the channel, Orig. art. hast 1 table ~.SUB CODE: SUBH DATE: OU/ ORIG REF: 002/ OTH REF: 000 Ll~ardln L-11,Q68-6k ENT(l)/DIA(m)-2 IJP(c) AT ACC NR, AT6001394 SOURCE CODE: UR/3180/64/009/000/OU6,10120 AUTHOR: Vany3tov, M, P. (Candidate of physico-mathematical sclerces); Isayenko, V. ditd: none TITLE: Spatial instability of the luminous element of high-pressure pulse lamps operating under repeated flash conditions SOURCE: AN SSSR. KomissiyA_po r~yuchnpy foto afii I kinematograffi. Uspekhi nauchwr L _gr fotografii, v. 9, 1964, Vysakoskorostnaya fotografiya I kinematograftya (High-speed photography and cinematography), 116-120-1- -TOPIC-TAGS.* flash lamp, spark gap, electric discharge ABSTRACT: A photoelectric method was developed for measuring the probability distri- bution of the positlon of.sp dischaWe channels in space when the gap Is cut in under repeated discharge conditions. The spatial distribution of the channels de- pends on the shape of the electrodes. The width of the distribution is 0.35 mm for conical electrodes and increases to 1-2 mm for electrodes in the shape of a hemis- phere or frustum of a cone. The widths of channel dis tribution in ISSh-_ type - high--- - press ure pulse lamps range from 0. 5 to. l._5 mm. Methods- are --deicribed- for Aipro_ ving the., -spatial - stability - of ---th6 - cifannel- _~tvo auxiliary electr*des into the P tord 1/2 IM .ACC NRt AT6001394 --spark gap when the gap is flushed with a stream of gas having a low breakdown capaci- ty and when a surface discharge on a ceramic surface is used. Orig. art. has: 6 figures, I table. SUB CODE: SUBM DATE: 00/ ORIG EMF: 000/ OTH REF: 002 Card'-&-- L X1067-66 EWT(l) IJP(c) V, W/G G - - - ACC NRs AT6001395 SOURCE CODE: UR/31P.C,/64/009/000/0121/0125 _~-ALMOR: Vmukov, M. P. (Candidate of physico-n4thematical sciences); Ivayenko, V. _LL. ; MV, 7 ORG: none TITLE: Limiting loads of pulse lamps operating wider repeated flash conditions SOURCE, AN SSSR. Komissiya po natichno fotografil i kinematografil. UsIxil(hi nauchngy fotografff- v. 9, l964.7Tys-oko-ikoros-tnaii-Toto-grWffy-a-T-RTn-eiiii-tog-r;irlya (High-speed -photography and cinematography), 121-125 TOPIC TAGS: light pulse, spark-gap-,-flash lamp, electric discharge ABSTRACT: The article deals with the recovery of the breakdown resistance of a spark gap operating: lUnder-c6n-dttio-ii-"f-i4ap~eated-flashes-wi-th-a-IJ.miting-load-3t--a-discharg, repextition rate of up to 20 kc. In operation-with a given flash repetition rate, the limiting power of a pulse lamp can be raised by increasing the capacitance of the working capacitor. When the discharge repetition rate is increased, t~e power expend ed in the lamp Is determined by two opposite factors: a &