SCIENTIFIC ABSTRACT V.M. CHUDAKOV - I.A. CHUDANOV

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000509020013-1
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 12, 2000
• Sequence Number: 13
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

?do S/056/62/043/002/015/052/
B102/B104
AUTHORS: Rechitskiy, I. V.,.,Chudakov V 1jr
TITLE:. Shape of the angular distribution of shower particles
PERIODICAL: Zhurnal eks-aerimontallnoyi teoreticneskoy fi z i k i 3
no. 2(a), '1962, 454-450
OVO CiM 16, ~j -Phys. Rev. 122, 626,
TEXT: It'haS shovm (Nu 02, 1960;.
1961) that in nuclear emulsions~the distribution of secondary particles
12
produced by nucleons of > 10 ev with respect to x-log -'.tan rd is i~ot
normal in spite of thepredictions,of the hydrodynamieltheory of head-on
collisions; (0 is the angle.between the.direction 6f,flight of the Drikary
particle and that of emission of thesecondary one in the laboratory,
system). The authors propose ner, criteria for investigating the angular
distribution of secondary shoiller partioloSLwith any n S (n. - number of
particles in the shower). If the distribution of th6 quantities x L is
normal, the random functions
Card'1/3

Shape. of the angular distribution B102/B104
obtained experimentally. Expectation value and standard deviation of these
quantities are given by 0 and a(!~) 1/1n, respectively. 'If one
of the d k values-is.not Within the range -.2/yn".t 2/-Crl, the distribu-Ullon
of X r:*L 11 be abnormal, at least for a -oart of the. shower. By ap,~ ling tha
__Y
criterion to showers for Primary-nucleon energies of 10 ev it is shorn
thit the-distribution with respect-to' X-log tan.-O is abnormal. It is in
qualitative.agreement with the-two-center model of multiple production
(A.A.Yemellyanov, ZhETF, 42, 171, 1962). There are'2 figures and 1 table.
ASSOCIATION: Fiziko-tekhnicheskiy institut Akademi.i nailk Uzbekskoy SSR
hysicotechnical Institute of the Academy of Sciences
(P
Uzbekskaya SSR)
SUBMITTED: March 30, 1962
Card
3/3

AZIMV, S.A.j NIKISHINp' BOK.,- CHERNOVA, L.P.; CHERNOVI,' G.M.1 CHUDAKOV V.M,

L 13003-65 E'ft'r(m)/F1NP(t)/EWP(b) IJP(,-,) JD
ACCESSION NR: A -R ft_
-sougem'-
Ref. zti. Fizika., Abs. 7D458
Voronoyg- -1 o 'N DlEtU6~. G .I ert
AUTFIGIRIS Ch___ kov, M. P,
TITLE: Investigation of biref-ringence in st-licon crystlr;, by the
method of infrared polgr.~,pepRy
-S
':7 CMED Sb. Metd elektr. infrakrasn. polyariskopii I
defektoskopli poluprovodnik. materialov. M., 1062, 22-27
A.
TOPIC 'TAGS: silicon, single a ystal, double refraction, polariscope,
dislocation study, ir measurement
TRANSLATION: Birefringence patterns were investigated of iingle
crysta's of n-type silicon grown by the Czochra~Lik-'
argon or helium atmosphere. Pla te scud an~
o the crystal grow',~I) axis
-tt-,~rns wF-re obtalnej Q -'anninc,
-31)e 1"he homogeneity of transm1.qr,,',-,,n. frared i~adiation
Cwd 1/2

in the crystal plane, the dislocation density, and the minority
carrier lifetime were also investigated. The values of the princi-
Dal tanv-entlal stresses in the single cry,,O-Ial were- A
Is established between the values of I~he cr!-,--j7a-L
-~-~eS in the crystal and the dislocation densit,; or~ -Ar,ority
lifetime. The possibility of
pon,!- 1 rig t~, ac rew - type Impu r 11 ty ma - s
STIB CODE: SS' OP 7-4CL: 00
Card 2/2

S/166/62/000/904/006/010.-__~~
B112/B186
AUTHORSj Azimovi S. A., Chernovaq L. P. 9 Chernov, Q.~ M.
Chudakov, Vv 6M.
TITLEs The nature.o,f Ahe interaction between fast nucleons-and
heavy, nuclei
'PERIODICAL f
3 Akademi ekek& Iz'estiya. Seriya fiziko-
ya nauk Uzb y SSR. v
matematioheskikh nauk, no-- 4, 1962, 47 - 51
TBXTt The authors studied experimentally Ahe angular distribution
S a lea
-system) of secondary-particles in shower produced by charged partio
(
They observed growt S-OfAh ot
h-propertie e knis ropy d which are qUalitati4el..
-6ntations of the interaction be
inconsistent with theoretical repres tween
a.nucleori,and the flight-path "tube'4' of nuclear matter.- If, however,.the
model of peripheral interactions-is.applied,to reakrangement collisions of,
fast nucleons with.heavy nuclefthe increase of anisotropyAn the S-system
-nuoleus-target nucleon
can be explained, as due to. n,increased umber of a
A n
participating,in the collisi.onj.-,as well-as to -the formation of a.great
number of ionized: particles and the-appearance of.humps in shower
particles* .There JeL'I f igUre
Card 1/2

~'ACCESSION NR: AP4042364 ~S/0056/64/047/001/0624/0029~
:AUTHORS: Abduzhamilov, Sh.; Azijmov, S.~ A.; Chernova, L. P.; -ChernoV*~;
G. M.,- Chudakove V. Mo
~TITLZs Angular distributions~of seco,n4ary particles in pK colli-
sions at 24.BeV energy
v. 47- no. 1, 1964, 24-29
~SOURCE: Zh. eksper. i,.,teor. fiz.
~.~TOPIC TAGS; pion scattering,,angular distribution, nucleon scat-
te
ring, dispersion analysis, nuclear emulsion
ABSTRACT: The research was undertaken because asymmetric emission.
of particles was observed in nucleon-nucleon.collisions at energies
.of several hundred BeV (V. V. Guseva et al., Izv. AN SSSR, Ser. fizo":..
;v. 26,'549,-1962. N. A. Dabrotin et al., Nuclear physics v. 35, 152#t
~1962). The statistical method of dispersion analysis (the F test)
is used to check the hypothesis ofindependent secondary-particle
1/3

ACCESSION NR: AP4042364
IT
iemission angles in.inelastic pN interactions involving primary pro-
tons of equal energy E-andequal numbers n of charged secondary
;particles. The experimental values'of F for pN interactions at
--9 charged secondary articles conflict with this
:24 BeV and.for 4 p
'hypothesis and indicate,nonuniformity of the angular distributions
nted
~in the laboratory system This nonuniformity cannot be accou
for by momentum.conser,~ation.in knock-o~, collisions,and is associated. -
;With the particle.production,mechanism in peripheral interactions.
dis-
'The efficiency of the F-test,for determining nonuniform angular
in the laboratory system was checked by investigating the
random stars obtained/from a, somewhat dif fekent model of NN inter- r
:1'actions at 300 BeV, by obtaining the spectrum of meson cloud veloci-
ities in the center of mass system~and the secondary7particle energy'.
ispectrum. in the rest system of the meson cloud. An accelerated on-
.-Itrack scanning of plates bombarded with 24-BeV'protons in the CERN.
accelerator has shown-tbat for the stars observed in the emulsion
the most values of ?---exceed.unity, meaning that the emission angles
of the secondary particles'are-not independent at least for so-me
:77-.

AFJTHORS.- Chernov, G. M.; Chudakov, V. M.
TIT TE.. Statistical analysis of angular distribution of shower par-
SOURCE: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 47,
7~-, ~ :. 1964z 1273-1278
TOPIC TAGS: cosmic ray shower, nuclear cascade, angular distribu-
1-wc center model
ABSTRACT: inasmuch as the two-center model of multiple -article
cannot be regarded as definitel,, proved, the au:Chors de-
il-- a new method for a quanti-fative testin'-T
j-,, a r J i sr i_b~111 t _L
a-re LCYL Quanui-rati-ve tests o tl~ various
models of milltip-1c production of particles in high energy NN colli-
Cord 1/3

L 131495-65
t
sions. The method is based on the use of a uniform, distribution for
the secondary particles relative to a quantity y, defined by
P(t Vi. Y2, a) d",
regardless of the parameters ylj T2 . and a ('Y1 1 T2 __ Lorentz fac-
tors in the laboratory frame of the fast and slow centers, respec-
tively; a = n /(n + n ), where n and n 2 are the numbers of charged
particles emiltedlby diese centersl). The distribution Darameters are
estimated by the method of moments. angular- the
_-y -shower particles n a photocraphic emuls_= by
produced i
12
1 c S-with energies exceeding 10 e Vis compared with the pre-
dictions of the usual two-center model and of the Hasegawa many-
c,Mter model. It is concluded that, the Hase-lawa model does not
agree with the experimental data. The authors thank E. G. Bubeley
f6r a discussion of the work and for valuable remarks. Oriq. art.
CO,d 2/3

I
3495-65
ACCESSIOU NR: AP4047895
has: 4 figures and 11 formulas.
ASSOCIATION: Inatitut yadernoy fiziki Akademii nauk Uzbekskov SSR
'Institute of Nuclear Physics, Aca6lemy of
0S ep, -D 3 ENCL: 00
SUB CODE. NP, AA UP, REF SOV: 001 OTHER: 005
Card 3/3

ACC NRs AY60i6ft2 squRcE CODE: UR/0367/66/003/001/0112/0
AU711OR: Azimov, S. A41 _B soplkulov,, M~ 8 Chudakov, V. M.
ORG: Institute fh'ielipar' ftnjr-a 'P Ad%PACM~ or RM eneen, UzbejS Oft _Qnstitut yadernoy
fiziki. Akademii neuk UiVikikoj SSR)
T41-:Z: Azimuthal angular distribution of shower particles and gray tracks produced
by !f smig rM Partlelri in emulsion
SC- 3: Yadernsys, fiZA;,,V, 3p~no. lo 1966, 112-115
TOPIC TAGS: cosmic 'xhowir,, cosmic, ray, particle, angular distribution, cosmic ray-
an '. cotrojr, Am ri t',L e )-Rq C'&
A-,r, 2RACT: This in a continuation ofearlier work by the authors group (ZhETF v..451,
4~~, 1963) where a procedure was.dove1pped forobserving different correlations'in
the azimuthal angular distribution. The present article is devoted to the azimuthal
angular distribution of.gray,tracks ofshower, .particles in stare produced.in emulsion
by singly charged particles, and satis6ing the selection rules nh + ng > 15, ns > 10
(nh + ng - number of strongly ionized particles, n9 - number of shower particles).
A gray track is defined as one with a-grain-density larger than 1.4go (go - grain
density of fast-electron,track) and a range larger than 2.5 mm, corresponding to a
proton kinetic energy not lower than 25 MVV.r 2he investigation covered 33 shavers
of -50 Gev energy. The procedureAnvolves introduction of specially defined random-
quantities,, the mean values of which are determined separately for the shower L
Lc-ald V2

SUB CODE: 20/ OUBMARS: O4Nq65/ ONVO RET: 003
Card 2/2

ACC 11R~ AP6023083 4 SOURCE CODE UR/0367/66/003/004/065710662
AUTHOR: Abduzhamilov, Sh.; Azimov, S. A.; Chernova, L. P.; Chernov, G. M.
Chudakov, V. M.
IVY
ORG: Institute of Nuclear Physics, Academy of Sciences, Uzbek SSR (Institut
yadernoy fiziki akademii nauk uzbekskoy SSR)
TITLE: Coherent interaction of high-energy protonAith complex nuclei
SOURCE: Yadernaya fizika, v. 3, no. 4, 1966, 657-662
TOPIC TAGS: proton, high energy protin, photoemulsion, nucleon, particle
interaction, proton interaction, inelastic interaction
ABSTRACT: The authors use a method proposed in a previous work [Sh. Abdu_
zhar.nilov, S. A. Azimov, L~ P. Chernova, G. M. Chernov, V. M. Chudakov
ZhETF, 47, 24, r1 96 4) to find. and analyz e in detail the differ enc es between the
angular distributions -j secondary particles in showers formed by high-energy'
protons and satisfying the necessary selection criteria for pp and pn collisions in
d 1/2
C
c

L - 45314a~6
ACC NRs AP6023083
photoemulsions. These differences are easily explained by the inclusion of
coherent interactione. The method of research is also explained in detail.
Experimental data are presented and discussed. The results are discussed of
processing the showers formed in photoemulsions by protons with 24 gev and
satisfying the necessary criteria of selection of pn collisions. Measurements have
been made previously by the authors, the number of particles being n :~!~ 4. The
differences found indicate the possible existence of coherent interactions of protons
with complex nuclei among the showers with three and four secondary charged
particles at 10 and 24 gev. The authorsalso used.measurements made at the
Laboratory of High Energies of the Joint *Nuclear-- Research Institutg (OlYa ) during
investigation of inelastic pn interactions of. prot~_nswith an energy of 10 gev with
free and quasi-free nucleons of the photoemulsion. The authors are grateful to
V. I. Veksler for permission to use the experimental data obtained at the LVE
OlYal, and to M I_ Potignret-kiy-for discussions of the work. Orig. art. has:
2 figures, 15 formulas, and l.table. [GC]
SUB CODE: 20/ SUBM DATE: l2Mar65/ ORIG REF: 002/ OTH REF: 001/
Card 2/2 mjs

L- G6499a-67--- --E,~IrTM T(C2)
ACC NRs A?7000463 SOURCE CODE: UR/O367/66/OW_0_0_1jO1K/0_177
AZIWV. S. A.; NIXISH0, B. K.; RECRITSKIY. CHUDAKOV, f.*
',Inelastic x'-p- In'teracticoms Ith.Slow Recoil Protons at 17 GeV"
Moscow, Yadernaya rlsika;~ July,-.-. 1966; ppA69-177,
ABSIliACT: x-p-~ Interactions, withIr'se and quasifree photoemulsion' protons,An
which 4 and 6 seconda d- d, have been investigate
ry charge particles are smitte d,!
A method of analyzin the an- lar correlations and the distribution of real-
9 BU
',dual effective masses Indescribed which can prove useful in Investigating
multipion resonances. Exp erimentail data Indicate the possible existence of a
resonance -wi.th- the mans' 3.2 PeVe -The Authors tlhmk'Ve Ot or his
in the acquisition of photographic,plates irradiated on the TaYeR11 accelerator; Hila
Podgoretsk3y for discussion: of. the work: and valuable advice; and T- Vs 7-cpadayla,
A. G. Lwnbayey, and Ye.- .A* Tj1% who participated in the review of the :almaations
Ojzxg. art* has- 6 figures, 16 formlas, and 1 tableo LBasod on aut~.hors ..Enge a
jj
VFRS 1 37
ORGt stitixte of ftaesa;. Piwai6a AM UzM (Ingtitut yedermW fizild AN U
Tom. TAGs-. ine2muo interaaWon,. proton
=cost 20 SUBM, D&T&t 09Aug63 ORIG REFt 003 OM BEFt
L.Saffd
~Lj E
_ - - - I., . 11 1 ~ .1 __ _,,0_ V Y q

U2
ACC NR: AT7002130
if
-Z

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2
1-light
~ urde
Ig 0
,
.
2.,;-monochromator; 3--IR pd-~.,
,-:
h
i
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am--
.
ze ; 4--t
lar
ermal c
rs
bar; 5--1R detectors; 6- sum.
'
min& Mplifier.; 7--Multi--~~.

potentio-~L,
-channel recording
fit
meter.
located
through:the sample C ln:tthe the al-chamb,
TM er s,recorded.with respect to tem-
Perature variations~ Theiauthors rep -of scme-experiments carri cu
ort,thevesults ed
.
with these two -instruments j. has:- S*figures.
-. Orig..,,art.
SUB CODE: 20,09,14/ SIMM DATE. 14Juu66/-' :.ORIG REF:' 005/ OTH REF:' 001

Card 313 . 1.
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_ ~ . , 1. '.0- ~ . - :_ - . ~_, ".
F

ACCESSION NR: ARW44oD4 S/0058/64/000/006/E049/1049
7SOURCE: Ref. z'h. Fizik&,,,Abs* 6068:'
AUTHOR: Distler,' G. 1.;~ RY*Gbkova, ss:ive; Cherny-ak, T, Yei S.
TITLE: Use of the method oi infiaied-..p6lariscopy.,to study models of aaloy jun6tions
and the influence of mechanical processing on birefringence in Si crystals
..CITED SOURCE: Sb. Metod,fotoelektro-'ififrakrasn. polyariskopii i defektoskopii,.:-
poluprovodnik. materialov. M., 1962,-16-21
TOPIC TAGS: -IR polariscopy, alloy':Juno.tio,n, siliconerystal, crystal, birefrirW-nde,
:-;TRANSLATION: St.udies-high-resistance n-type silicon single crystals grown by the
Czochralski method in a vacuuml and-He with, resistivity of 20-100 ohm-cm. Bire--
fringence in crystals is studied by the method of photoelectric infrared polaris-
copy. It is found that during crystal growth there arise stressed regions near the
lateral face; the streasea,reach up to 63 kg/cm2. For plates cut perpendicular to
the axis of growth it is shown.that-stressei; along the axis of the bar 6pread,nou-
uniformly; maudmum birefringence occurs At the ends of the bar. There'wers in-
Card,1/2

0-
L Chudakov. V. S
TITLE., Investigation of the dependence of-birefring6nee in germanlum.~~'.~.
single crystals on the,growtfi:conditiofis-~
CITED SOURCE; Sb Metod fotoe'lektr. ififrakrasn. polyariskopi
defektoskopil-poluprovodnik.~-materI
alov. M.., -1962..-28-35
TOPIC TAGS: crystal growth, gei-mariium" single crystal, double
refractions dislocation study
TRANSLATION: A photoelectric. sdanning-polariscope PIK-1 :(wavelength
2.250 was used to study theAependenice of birefringence patterns
ryo_
due to mechanical stresses.on the thermal regimes of germaniuma
tal growth-. The samples were out perpendicular to the growth axis
from crystals obtained by the Czoahralski method, by zone melting,-'
and-by the tablet method. The obtained birefringence distributions
Card 1/2

A-P::,O 17342 1~
V.- S. , 4en' , A. N.
1TLE Calculation of the elastic binding coefficients anJ cS i
-2256
zika tverdogo tela, v. 7, no. 7, 1965, 2251;
TOPIC TAM- : crystallography, spinel structure, spectrum analysis, e1astic modulus
.2i
~ABSTRACT: Elastic constants and compressibilities of some ferritr--s were calculatedi
;~fr~n the frequency spectrum of a spinel-type linear series. ';~Iues -,f the fre-
lquencies were obtained by using data fmn the literatur,~. An the ex-
!-oerimcnfal data showed that for isomorphic displacement of r, 4 of the cations, the
DInd of the liaftared spectrum changed sligh;ly *and this resulted !kn
4~,scillations of the lighter okygen atoms in the spine! lattic-. T he o, --t, 1' ca I an d
(experiTrentai results for the frequencies of spinel-typ'z riea.-
~cr Fe30L,, NiFe204, CoFe204 and ZnF~-,`),; a'
'--m the miximum and
2:
C(J' C16

,L 62-51.3-65
Tz-
ACCESSION NP: AP5017342
Elbe - aa .9 -ifier,lattide par~metd~~ and
~rj 4- 4 (1,4- y)
Values of 1/8 for s me of th& spinels are given in table I of the Enclosure. Calcu-111
lations for the approximate linear model gave two coliective values for the elastic
-m art.
constants, and thus for the theoretical calculation of'ccpressibility. Orig.
has: 2 tahles.
ASSOCiATION: Institut metallurgii, Sverdlovsk (Institute of Metallurgy)
SUBMITTED- 03t4ar65 ENCL! 01
4110 REF GOV: 001 OTHER: 003
Ca;.d 2
77f-

ACCESSION HR- APS017342
- ------ ENCIGS
consUnts~-k
ory 5- -1 Theory
he (10 d*cm Experiment(105d-cn,
T
Ell t2i I
1012d-cm-2
-1012
-kT k0 kT k0
NiFe20418:32 0.6312.26 1,6710.84 1:67 0. 1.03 1.74 1.83 1 . qLt
CoFe2O4 8 36 0.52 2.27 1.69 0.69 1 66 0. 0 92 1.38 i.56 1.79
ZnFe204 8.42 OM 2.17 1.72 0.53 1.48 0. 1:03 11.14 1.39 -
Card

L 3.4624-66 EWTU)
ACC NR: APS026303 SOURCE CODE: UR/0051/65/019/004/0586/0696
AUTHOR: M en' A. N. - Sokolov, A.V.,; Zvezdina, ~i. A.; Xurushin, Yu. N.
Nekoshnov. B.M.:
"&U~akcv. V. S.
Ills-
ORG: none
TITLE: Determination of the energy spectrum of an Impurity ion with an unfilled d-shell
in a crystal
SOURCE: Optika I spektrookoplya, v. 19, no. 49 1965, 586-506
TOPIC TAGS- crystal Impurity, EPR spectrum, line splitting
ABSTRACT:.
The interpretation of energy spectra and EPR spectra of ions in various
i crystals requires the solution of a secular equation which takes into account the configura-
tion of the ion and the symmetry. of the Intracrystalline field. In We paper, tables of
matrix elements have been compiled which make it possible to write a secular equation
at once for any term of any configuration in the case of tu) Impurity ion with an unfilled d
shell. These tables can also be used in studying EPR spectra if the field of lower sym-
metry produces a splitting comparable in order of magnitude to other perturbations (spin-
orbital and exchange perturbations, -etc.). As an example; the splitting of the p#ncipal
card 1/2
P UDC: 539.184.2:548.0.001.1

I .. - - -.1 - --------------- M-Ms
ammimm! -- -1
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AGOSHKOV.2 M1,102- GRDAKqy2_,_V.V.,, inzh.; PANFILOV, Ye.l., inzh.,-

NAZARCHINO A.?., )wW. tekhni naukl LHIT~~V. V.V.,. gorW inzhener
I studyllm the otovine rate in devolonino vain danamItA- lkijah-

~-, --11-:n
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Composition and Properties of the High Xoleculw (Cont 647
Weight Fraction of Potrolsum; Collactlan of Papers, Moscov, lzd-vo AN ~, 1W, 3TOpp
--1 Ij[-.,, Valynskiy., N.P. Determination of Sulfur Content in Heavy
Petroleum Products by Double Combustion 352
This is a new method proposed for the double combustion for the deter-
mination of sulfur In all types of petroleum proftets, with the exception
of gasoline and low-sulfur herosene, and in individual organic compounds
containing C, R, Oj, N. and S. This method Is more exact than the boxib
and VTI methods. There am 6 tables, 5 figures, and 5 references of vhich
are 4 Soviet and 1 English.
Gurevich, I.L. On the Problem of Petroleum Desulfurization 364.
The author describes the continuous desulfurization of crudes by means of
the MI adsorption method, Variation of the adsorbent - crude ratio controls
the sulfur content of the various fractions. The article gives 3 figures.
There are no references.
AVATLAZZ: Library of Congress
TH/her
12-8-58

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CHUErAKOVA, I.K.; GALIFERN) G.D., doktor khimichaskikh nauk; VOLYNSKIY,

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PA YA -Ft,- BUMIKOV, G.A.-

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Ekbmitted February 10, 19640 e 4

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CHUDAKOVA. N.I. ~,
Device for cutting glazed and ceramic tiles. $uggested.-by S.I.,
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CHUDAKOVAq N.I.

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IN
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TOPIC TAGS: sernicanductor. semiconductor resistance, semiconductor
rflsis'p-i:ice measurement
-ACT: The equipment involved, theory, and experimental results obtained
ABSTR
ilith an irnpulse method of measuring the resistance of sernicondi"clors are
A pair of square impulses, one of each polarity, is amplified and
':i2ci to acathode follower. The impulse repetition r t can be controlled; the
app a e
c-;ration is 11m sec. The method prornisefz the
J the shunting capacitance of the w-iring ,a held within
-u r r e sl 9 tanc e
Ccrd

AC~-IESSION NR. AT5013582
Certain limits (formula 7). The method also permits measuring (with an error of
D t 2 the resistance of a semiconductor when the latter presen-t5 aconsider-
method was also used fo r-,-, PS77~ t;I o rs
11pi -,ent) w'xh
Wnen the wiring capacitanct. -tonrn
a r --Ould be rehably me-asured,
-ad was
-he -It,.St~ca, er7-~r
-I, Ys qt,
_7
ASS06LA. ION: zhakiy liolitakhnicheak-Ay inRtibut (Riga Poly-technic Institute)
E N C L:
OTHE, R:
Card

AZIMOV, S.A.; CHMOV, G.K.; CHUDAKOV, V.M.

89211
S/056/61/040/001/017/037
B102/B204
694 0
AUTHORI Chudakov' V 'M-
TITLEi The azimutfial~angular distribution of shower_p!qtjicles
PERIODICAL: ..Zhurnal pkeperimental"noyi teoretioheskoy fiziki,,v. 40,
no. 11 V961 156-~162
TEXTs An experimental verification of-the two-center model of multiple
particle production in...oollisions.'of fast-nucleons by means of-the angular,
distribution (with respect to.:the.angle between the orbits of primary and
secondary partioles)ie'unfavorablep,.beoauAe the effect is mostly of the same
order-as the natural~statiatioal~oscillations. To confirm the utility of
this modelp the finding-of an anisotropy of the azimuthal angular~distribu-
tion ofIsecondary ps Irtioles'app ea-rs.to be better suited (insofar as'it is
not surpassed by statistical fluctuations). Theoretically, the azimuthal
asymmetry of the angular distribution of fast particles produced in colli-
sions between nucleons and complex nuclei has already been studied by means
of the Pearson criterion, but no existence of an azimuthal asymmetry could
be proven. This ist however, ascribed to the fact that, in order to be able
Card 1/5

89211
S/05 61/040/001/017/037
The azimuthal angulardistributions,9. B102YB204
to apply this criterion, a large humber of secondary particles must exist.
For the caseAn, which only a small quantity of secondary particles exists,
the author in the present 2. paper shows that it is also possible, and more
favorable, to apply,the, -criterion for the finding of an.azimuthal
asymmetry of secondary'partioles. Here, the lack of particles in individual
showers may be compensated by..a large quantity of showers. To study the
angular distribution, the total azimuthal-angle 21T was decomposed into m
equal integrals, and thenumber of particles (nk) in each integral was
m
calculated (.E~ n Wn V,the total quantity of secondary particles). If
k=1 k
azimuthal isotropy and statistical independence of the departure angle
of the seconds, y particles is assumed, one will find that in the case of
large n., an ~5-distribution with ml?11 degrees of freedom exists. Here, the
mathematical expectation and dispersion of these quantities for arbitrary
m
2
rl is calculated n n For, this purpose, the quantity
%
2
Okm )~/(m-l) is introduced-p and using the Chebyshev inequality and the
Card 2/5

The..az'imutha angular
theorem by',1ya,piin6,v_i:,,^j
of thd 'ahgular, ~c
ropy:,
_-'fixed-'-direction-of.,thf
e, .~of .,:.the)-qua
_6/0501/940/00.1/01.1/937
i tribtit ion.
B 10 2,,#"B 2 04

f

.i;*,
le~ o owlngres~
is. -obtainedi..' If'. azimuthal. i
so

tr ,
a~
iole,with arbitrar 9 and
part
y
_.
remaining A _,.0 particles is assumed,-
-the mathemat:L661
,
t s;,di'Oporsion -is given'by

do, dopi, lmi'
, Tn
S rt'

ip, 2x, cm~ I i~t
do,

r ri 01;-e

-M)lk -

v~
OP40/001/017/937'
azim
utbdl~ ingu BI 02/B204
a-
~The~ suggest bd7;;her'e -A"MO.W."Us, p p ing
th
method urpose,of:analyz th'
I~utha
az II.angular -dis- ributio ndary~lpartl:oles: irv'!'Jets", prodiiced
~in p'hoto"graphic-amuldi `,chaiged...'cosmio 'particles. The: experi
on~_
mental- date; use were-. D tained-t a ~,Ya-~--,,~,Pern gr a laboratory. - The d-mvalues
4
a wean. A`42 i._ "and Lor-e' r -(in the
for.52-,qhbwers wi~t'h~'-
an ntt-faoto a
ad'a'Vlatidd
and i5b ~~'weie The
im betw6en - 2. 4 a 'obtained'-indioat
-'of -'a'symme-trfe- zi ' tkial angular distribu-.~
b4V
,-;_the~,exist6noe. a mu
or~A;n indi:iidu~1:1*~ho'w-ers..,-..T#e~...exp~ridienttLl- data areAn cont'adi-t
r c ion to
e~ -hydrodynamio.- theory- of .'.'jet. i-I ormation': in.,central', -o
t
h ollisi'ons in the
try, `~t-._.'sdcondary- partioles,I-and indicate an
idal sy'mmiq
mppjr~ant`_ 'p-
'P'ar 14yed -by 98, ad
pef~ii6i4-:,--oollisions.
eson am on ocourr
malnlr-near,.tW-~Plane; .,w .,ob,-Js -per~6ndiculair' 0 n-of the a,
to, the dire tio
p n
o Appeakel,,the6reti o ally -.to .be consequenoe~of
:.,of -the excited :,oentdr!Whi -a-
erl'.moded, 6f 'Ahe,! ulti I*e'pr
duc~ii6h in high
ii-th6 ~,two-cent -energymuoleon
__..-,,.nuc eon co or-: 'h
1.1 i s ib nis -t ahis S A. -,iz imov 1:. Podgoretskiy,
T.,
and D. ernegz~_. or. he ex erimental~aat
_S Che.rnavakiy pr,;~:r,emarlce'j Ya, a
p
S.-
'G' I .,-Cherncv, s- Thdre-alie I table I ran S.
ta'n' o' and 0 Tefe pe
and
_b
Soviet lod:,and,X,.
non4oviet -,bl6o i
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