SCIENTIFIC ABSTRACT KRESTNIKOV, YU. S. - KRESTOV, M. A.

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CIA-RDP86-00513R000826420004-5
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December 31, 1967
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SCIENTIFIC ABSTRACT
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rl 7. 6/6 3/0 4 410G210-521065 product ion ... a nu 7 table. t,,,crvtj-hO,,,,.o, r' _ Ins itute of Thoor' d r-M J J C, fthe Academy of ,jejer etical and S L T-,-' N'OvQ;.~bur 2, 1962 "ces LTZ;Sj) "i-%intai physics Card 2/2 ACCESSION NR: AP4009109 S/0056A3/045/OOP/1879/1890 AUTHORS: Barmin, V. V.; Dolgolefiko, Ai' G.;- ~Keqtniko_V,_,Fu0 S.; Meshkovskiy, A. G.; Nikitin, Yu.'P.1 S~ebanov, V. A. TITLE: Obs6rvation of the decay' SOURCE: Zhurnal eksper. i teoret. fiziki, v. 45, no. 6,"1963, 1879-1890 TOPIC TAGS: Omega meson decay, Omega meson charge parity, radiative decay, Omega meson width, Omega fieutrai particle decay, pion proton interaction;. negative pion protop interaction 0 ABSTRACT: The reaction 7r + p n + co.;-* n + Tr + y was Investigated for negative-pion momenta of 1-2~, 1.51, and 2.8 BeV/c ie a 17- liter propane-xenon bubble chamb,?r. The purpose of the pvestiga- tion was to' 'detect the decay a) -; 7r0 + yI--o- 3,y, the existepce of which was e6tablished on the basis of the excess of numb6r of events Card 1/3 ACCESSION NR: AP4009109 with three -y-rays as compared with the. number of background events mTro (m'> 2), and was from the reactions Tr + p - n + further con- fiMed by a statistical method based on the kinematics of the w - 7TU+ -y decay. The cross sections for the reaction under study were estimated in the indicated momentum interval. "in conclusion, we express our deep gratitude to A. I. A'.ikhanov for constant interest and valuable advice. We thank the ITEF (Institute of Theoretical and Experimental Physics) proton synchrotron crew who enabled us to obtain the large number of photographs in a short , time. We thank I. Ya. Pomeranchuk, L. B. Okun', I. Yu. Kobzarev, B. L. loffe, Yu. A. Simonov, and A- S. Zhizhin for fruitful theo- retical discussions. We are very indebted to A. S. Kronrod, R. S. Guter, and Ye. M. Landis for valuable advice and for organizing and carrying out the calculations on the ITEF electronic computer. We thank the scanning staff under -the direction of V. P. Rumyant- seva for scanning the pictures, Yu. I. Makarov, N. S. Khropov, and B. I. Chistyakov for operating the bubble chamber, Yu. V. Trebukhov- Card 213 ------------ ACCESSION NR: AP4009109 skiy f or aid in the work and V. * V. Vladimirskiy f or helpf u1 discus- sion of the results. Orig. art. has: 8 figures, 27 formulas, and 2 tables. ASSOCIATION: Institut teoreticheskoy i eksperimentallnoy fiziki (Institute of Theoretical and Experimental Physics) SUBMITTED: 03Jul63 DATE ACQ: 02Feb64 ENCL: 00 SUB CODE: PH NO REF SOV:- 003 OTHER: 010 Card 3/3 ACCESSION NR: AP4009142 6/0056/63/045/006/2082/2084 AUTHORS: Barmin, V. V.j Dolgolenko, A.,-G.j'Krestnikov# Yus 6.1 Meshkovskiy, A. 0.1 Shebanov, V. A* TITLE: Search for the w -.* e+ + e- decay SOURCE: Zhurnal eksper. i teoret. f.iziki, v.~45, no. 6, 1963, 2082-2084 TOPIC TAGS: Omega meson, Omega meson decay, negative pion proton interaction, bubble chamber, proton synchrotron, three pion decay ABSTRACT: An attempt is made to observe the decay(D-.~.e + + e- ex- perimentally by the authors earlier (*3hETF v. 45, 1878, 1963) in a 17-liter xenon-propane bubble chamber exposed to 1.55 and 2.8 BeV/c negative pion beams from the proton synchrotron at the Institut teoreticheskoy i eksperimentallnoy fiziki (Institute of Theoretical and Experimental Physics). The chamber was operated without a mag- Card 1/3 ACCESSION NRs AP4009142 netic field, with 20,000 pictures at 1.55 BeV/c and 40,000 pictures at 2.8 BeV/c scanned independently. Four two-prong stars were found to satisfy completely all the selection criteria, along with three doubtful cases. Reasons are advanced for assuming that all seven two-prong stars are cases of the reaction*7r- + p -v n + to with the subsequent. (.u --. e+ + e- decay of the (D meson. The sources of back- ground reactions are ahalyzed. The value obtained for the ratio of the probability of this decay to the three-pion decay is found to +0.15 -2 'be (0.40 -0.30 ) x 10, which agrees well with the theoretical pre- ,dictions. "We are deeply grateful to A. I. Alikhanov for his con- stant interest in the work and for valuable advice, to the scanning department of the Institute of Theoretical and Experimental Physics for scanning the photographs, to Ya. S. Yelenskiy for an experi- mental determination of the scanning efficiency for electrons in a chamber, and to I. Yu. Kobzarev and Yu. P. Nikitin for discussions. Orig. art. has: 2 figures and 2 formulas. Caird 2/3 ACCESSION NR: AP4009142 ASSOCIATION; Institut teoreticheakoy i eksperimentallnoy fiziki (Institute of Theoretical and Experimental Physics) SUMMED: 090ct63 DATE ACOt 02Peb64 ENCL3 00 SUB CODE: PH NO REF SOV% 002 OTHER: 004 Card 3/3 . . . . . . . . . . ACCESSION NR: AP4012534 S/0056/64/046/001/0142/0147 AUTHORS: Barmin, V. V.; Dolgolenko, A. G.; Krestnikov, Yu. S.; Meshkovskiy, A. G.; Shebanov, V. A. TITLEj An investigation of the charge exchange r- + p n + 7r0and ,7T + p - n + I (n - 2-y) reaction in the 1.55--4.5 BeV/c region I '13OURCE: Zhurnal eksper. i teoret. fiz., v. 46, no. 1, 1964, 142-147 TOPIC TAGS: pion proton interaction, negative-pion proton interac-, tion, pion proton charge exchange, Eta meson production, neutral .pion angular distribution, pion angular distribution, backward acat- ~ering, backward charge exchange, backward exchange scattering jkBSTRACT: The reactions were investigated with a 17-liter propane- ~enon bubble chamber with an aim at checking on the theoretical pre- 4iction by L. B. Okun' and 1. Ya. Pomeranchuk (ZhETF, v. 30, 424. ,1956) that a considerable decrease takes place in the exchange scat- Card 1/3 ACCESSION NRt AP4012534 tering with increasing Tr meson energy. The number of pictures scanned were 20,000, 60,000 and 20,000 at momenta 1.55, 2.8. and 4.5 BeV/c. The charge exchange reaction cross sections were found to be 3.0, 1.54 + 0.37, 0.36,+ 0.09, and 0.19 + 0.12 mb for 1.14, 1.55, 2.80, and ~.50 BeV/c. The q-meson production cross sections for the same momenta are 0.5, 0.32 + 0.22, 0.08 + 0.07, and 0.05 + 0.07, re- spectively. From these values, and from the angular distribution of the 7T 0 meson in the charge-exchange reaction, it was found that the differential cross section for backward exchange scattering is 0.04 + � 0.02 mb/sr for 1.5 BeV/c and 0'.008 + 0.005 mb/sr for 2.8 BeV/c. "In conclusion we are deeply grateful to A. I. Alikhanov for contin- uous interest and for valuable advice, and to 1. Ya. Pomeranchuk and V. V. Vladimirskiy for a discussion of the results. We are grateful to the ITEP proton synchrotron crew for providing a large number of photographs within a short time. we are very indebted to L. M. Voronina, V. N. Dez, and N. A. Ivanova for carrying out the compu- tations with the XTEF electronic computer. Orig. art. has: 3 Card 2/3 X:-4A ACCESSION NR: AP4012534 figures, 4 formulas and 3 ASSOCIATION: Institut teoreticheskoy (Institute of Theoretical SUBMITTED: 30Jul63 ~UB CODE: PH tables. i eksperimental'noy fiziki and Experimental Physics) DATE ACQ: 26Feb64 ENCL: 00 NO REF SOV: 006 OTHER: 004 Prd 3/3 BARMIN, V.V.; DOLBOLENKO, A.G.; KRESTNIKOVO YU-S-; WSHKOVSKIY, A.G.; NIKITIN, Yu.P.; SHEBANOV, V.A. Evidence of W -* 'Y-af decay. Zhur. eksp. i teor. fiz. 45 no.61l879-1890 D 16 . (MIRA 17:2) 1. Institut teoreticheakoy i eksperimentallnoy fiziki. BARMINJI V.V.; DOWOLENKO, A.G.; KRESTHIKOV, Yu.S.; )*;Sf,,',OVSKIY, A.G.; SHEDANOV, V.A. Searching forU) e- decay. Zhur. ekep. I teor. f iz. 45 no.6:2082-2084 D 163. (MIRA 17:2) 1. Institut teoreticheskoy i eksperimentallnoy fiziki. ~Z4"2_1 -40 69431 S/139/60/000/01/005/o4i E201/E491 AUTHORS: Kholev, S.R. and Krestnikova, L.I~, TITLE: Experimental Investigation of Direct(A__Flow of Ga-s- in Fulse Discharge III PERIODICAL% Izvestiya vysshikh uchebnykh ,zixv(!deniy, Fizika. 1960, Nr 1, pp 29-37 + 4 plates (USSR) ABSTRACT: The present paper deals with slowly decaying shock waves.1produced by pulse discharges. These waves were studied as a function of the initial pressure in a discharge tube, nature of the gas used, and parameters of the discharge circuit., Discharges were produced in a cylindrical Plexiglas tube (50 mm diameter, 270 mm length and 9 mm thickness) with steel electrodes: a central "Point" electrode and a tube-sbaped one (Fig 1). The electrical circuit (Fig 1) consisted of a cnpacitor bank Cl, a pure resistance R , a discharge gap ShR and brass bus-bars of 50 x 1 mm cross-section. Two types of capacitor bank were used., a high-voltage one with total capacitance of 5 jiF charged up to 30 kV, and a Card 1/3 low-voltage one with total capacitance of 239 or 660 or LK 69431 S/139/60/000/01/005/o4i E201/E491 Experimental Investigation of' Directed Flow of Gas in Pulse Discharges 13-15 UF charged to 3.2 kV. Currents and voltages were measured with cathode-ray oscillographs to within 5%, (Fig 5, 6 and 9). Rates of propagation of self-luminous shock waves were recorded with a cine camera (cf plates in Fig 2 to 4 and 8) with an accuracy of -3a; at flow velocities of 2 to 3 km/sec and -10% at velocities of 10 km/sec, Pulses were passed through the discharge tube filled either with air, argon or hydrogen at pressures from 0.1 to 50 mm Hg. Multiple direct shock waves were produced by successive oscillations of the discharge, The frequencies of these oscillations were about 40 kc/s in high-voltage discharges and about 3.6 Re/s it, low-voltage discharges., Reflected shock waves were also observed,, Similar results were obtained for air, argon and hydrogen., 1n low-voltage discharges, variation of capacitance froin 239 to 1315 )IF did not affect the nature of the main direct shock wave, Shock-wave velocities Card 2/3 from 2 to 10 km/sec were recorded (Fiig 7 and Table 1) and 69431 S/139/6o/ooo/ol/005/041 E201/E491 Experimental Investigation of Directed Flow of Gas in Pulse Discharges temperatures in the wavefront region were of the order of 10000*K (Table 1). The main shock wave in high- voltage discharges slowed down as it travelled along the discharge tube, in contrast to low-voltage discharges where this shock wave accelerated during its travel. This indicated an essential difference between high- voltage and low-voltage dischargest the former were explosion-like with practically instantaneous liberation of energy, the latter could be likened to motion of a piston with energy supplied at a much slower rate., There are 9 figures, 3 tables and 12 references, 7 of which are Soviet, 4 English and 1 a translation from English into Russian. ASSOCIATION% Moskovskiy gosuniversitet imeni M.V,.Lomonosova (Moscow State Universitv imeni M,VAomonosov) SUBMITTED: February 9, 1959 Card 3/3 th Lckst. VILLVII) Yo.O.; K1UXH1KOVA,-L4.I-; OVEGIMS, U.S.; SADUVO F.I. Development of the three-color textile printing; color gamut of the color triad for three-color printing. Izv.vyo.ucheb.zavo; tekh.tekst. From. no.1:103-109 163. (MIRA 16-4) 1. Moskovskiy tekstilinyy institut. (Textile printing) r 1. MORACIFVS111Y, 1. 1. - ANG~NMKAYA, It. B. - V. 7. - MC137Y7.~T0, YA. F. - KI-P1115, 1. 1. N 2. USSR (6oo) 4. Water Pipes 7. Ceramic pipes for pressure pipelines. Stek. i ker. 9 no. 12, 1952 9. Monthly List of Russian Accessions, Library of Congress, March 1953, Unclassified. MOR&GHEVSKIYI I.I., kandidat tekhnicheskikh nauk-, ANG)WITSXATA, a.B., karididat takhalchaskikh nauk; MMTKIKOVA, V.I." Inshener; HOYSZMXO, Ta.t.; KIPNIS, I.I. Glay pipe uned for pressure pipe lines. Biul.stroi.taich. 10 no.3:22-24 7 '53. (MLRA 6:12) 1. Inatitut stroitellnykh materialoy Hinisterstva Promyshlennosti Stroitell- nVkh Haterialov. (pipe. clay) ),(' -, -, - ~- I ~ , , 'I ,Y- j4- - % --- I i 4 1 11 1 ' -1 r- , - I - . - - ~ I - - - - - - - 1 . SLA-1117,111 zll'*'~ -LI . v I T. 0 Y~ lull iT~17*11ilv A I F I N. - 2. jp"-,',q (()(r) 4. Boron Oxide 7. Viscosity of boron oxide as a substance used for praduation of viscosimeters. Zhur. fiz. khim. 26, no. 12, 1952. 9. Monthly List of Russian Accessions, Library of Congress, May 1953. Unclassified, T N --- ----- --- j3 m9eh of wwphICCAS bubble$ It I glass flu S' t f~i7v'_O_ rt'n'-M Id' dlamet v AJIX4=1 AqU Steklo i Keram. I m3l.-TH~CC C ~I*Crvitca be- 6fto e004 x Icn", ar"I the rus is tibsmbed bi ripc. edA cc the conrAwr tc*m' The K'It ist micuat(A (Inal thr jIyC. trizi throush it takroburttze and Vis-cs sucet-i6vtly illit) ;0p. w6cm conducted to dctv=ine the rate at whklt the &taetcr of Ow bua- decreases. at a function of (fie d4meter qzc imil the M c6n- tent, Results compared favaphty with thme, obtAwd by t4c B.Z.1c, - ------------ ---- WSH/Chemistry Physical chemistry Card 1/1 t Pub. 147 - 18/21 Authors I Slavyanskiy, V. T., and.Krestnikova, E. N. Title About the accuracy of reasuring the viscosity of melted glass Periodical Zhur. fiz. khim. 8, 1497-1506, Auq 1954 Abotract Investigations were conducted to det,~rmine the-basic sources of errors originating during viscosity measurement of malted Si-glass at 900- 150(PG. The average deviations of measured temperatures from actual temperatures were evaluated. The three groups of 3rrors, originating during the measurement of viscosit., of melted glass, are described. Proposals for further improveTint of glass viscosity measuring methods are included. Nine referonceu: 4-U351%; 3-01orman; 1-French and 1-USA (1926-1.95Q. Tables; graphs. Insti tution ~D~Ulbmittecl February 15, 1954 C" Wh(ft to I S. M IT Xv--W).-1fid1vWu*1 b,.jbbL-s were fno~nd to d toring Compositions and a tftk*tle is desciftwd for anAlyving stugle bubW-s