SCIENTIFIC ABSTRACT BARASHENKOV, V.S. - BARASHENKOV, V.S.

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• Document Release Date: June 6, 2000
• Sequence Number: 19
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

AUTHOR: BARAEN110,V.S., STACHANOV,I.P., ALEKSANDROV,JU.A. PA - 2076
TITLE: Elastic Small Angle Scattering of Neutrons by Heavy Ruclei.
(Uprugo(D rassejanie neutronov tjadelymi jadrami na malye
ugly, Russian)
PMODICAL: Zhurnal Eksperimentallnoi i Teoret.Fiziki, 1957, Vol 32, Nr 1,
PP 154-156 (U.S.S.R.)
Received: 3 / 1957 Reviewed: 4 / 1957
ABSTRACT: The latest works on the scattering of fast electrons by hydrogen
confirm the Conclusions of the meson theory concerning the ex-
tensive distribution of the electric charge in the nucleon. This
charge distribution is due to a "cloud" of charged mesons round
a central nucleus. Under the influence of an exterior field the
distribution of electric charge in the nucleon will change.
Above all, a polarization of the homologously charged meson
cloud and of the nucleus in the nucleon can be expeoted and the
neutron will then probably receive an induced electric dipole
moment p - aE, a fact which becomes apparent by an abnormal
behavior of the differential cross section of the scattering of
neutrons by heavy nuclei into small angles. If it is assumed
'in firot rough approximation t.4at the meson field of a neutron
Card 1/3 in an exterior electric field E - IV/z (withdy - 1) can be

PA - 2076
Elastic Small Anglo Scattering of Reutrons by Heavy Nuclei.
described by the statistical equation:
[72 2 2 2 ] 9 _ (mcA )2Y
+ (e/c -~ )E Z (4-/c)g6( r ), it applies
for the induced electric dipole moment that
-.> e 2g2 2 exp(-2mcr/t) 3 2
p W - . 22 E f z 2 d x + O(E
Therefrom it further results that
a(~ c/g 2) .(e ~/mj)2 n/3m - 2,1.10-41
In consequence of electric polarization the neutron is sub-
jected to an additional scattering of the COULOMB field of the
nucleus. Polarization scattering attains its maximum if the
collision parameter is restricted by the condition R d a.
Here R - 1,5.10-13 A1/3 denotes the radius of the nucleus and
a - 0,53-10-8Z1/3 the radius of the electron cloud. For the
energy of the interaction between neutron and nucleus it is in
this case true that
)2 1 7] _ Z2 2 1/r4.
H U (1) - r
r r ~- (i Z/2.r3) e/.. e
The first term denotes the pure nuclear forces and the second
Card 2/3

PA - 2076
Elastic Small Angle Scattering of Neutrons by Heavy Nuclei.
ASSOCIATION:
PRESENTED BY:
SUBMITTED:
AVAILABLE:
term describes the interaction between the magnetic moment
of the neutron and the COULOMB field of the nucleus
(SCHWINGERIS scattering). Polarization scattering is evaluated
here by means of BORN'S approximation and the here found ex-
pression for the differential cross section of the elastic
bundles of a bundle of non-polarized neutrons on a nucleus
is given. The results found by means of this formula are de-
monstrated in a diagram and in a table. Polarization scattering
occurs like SCHWINGERIS scattering on the occasion of scattering
into small angleV. The measurements are carried out with the
best success within an angular range of 9 30 up to 100
where nuclear scattering still depends only to a small extent
on the angle. Polarization scattering, on the occasion of
scattering of neutrons of low energy, makes a considerable dis-
tribution to a(G) and declines relatively slowly with in-
crea.aing 9.
Not given
Library of Congress
Card 3/3

AUTHOR BARASHENKOVL_V.S. PA - 2669
TITLE Concerning the Construction of a phenomenologicall scatt&ring
matrix with non local interaction.
(0 postroyenii fenomonologichQskoy matricy rasseyaniya s ne-
lokallnym vzaimodeystviyom. Russian)
PERIODICAL Zhurnal Eksperim. i Teoret. Fiziki, 1957, Vol.32, Nr.2,,
pp. 368 - 369 (U.S.S.R.)
Received 5/1957 Reviewed 6/1957
ABSTRACT The following work demonstrates the proposition that one can const-
ruct a unitary and macroscopic causal expression for the S-matrix
without the introduction of additional series with unclear phy-
sical meaning and with vague convergance. For this purpose one
writes the S-matrix in the following form:
4(XIXR ....... xn).
S-r(~_i)n/n 1))rP?$JHjHjj ..... Hn)
d
n. . a M
3
H.=H(x )=-i xiWxa~f(x3)z F (XIXAX3)6(x -x)d'(xlxax3)
I i eff
1 i
i.1
If one applies the expression
.q) +~3(p.p_k)) d' (pqk).
H. --ieft' (xi)Ak(xi)T
(x,)[~j (k+q;q)+~a(p
,
p
q
N, ipx-
)-T(q)eiqxi
)-A(k)a"i
)_ T Me- 1
A
(x
(x
%(x
Cr
Card 113 k
,
i
i
p
j
;

Concerning the Gonstruction of a phenomenological scattering F4*4-2689
matrix with non local interaction.
for Operator Hi (whereby ?4(p).(f(q); A(k); Pi implies the Fouri-
er-Components of the operators9crw; (? (x). A(x) and of the Form-
factor Fi), then one can calculate the matrix elements according
to the samB rules as in the theory of local interaction. An expres-
sion for tne matrix element of self-energy of field A is explici-
thy stated. In the space-time domain 99 (3F. _5F 0_ciA(t4_-i )2< 0
84 >>110 (whereby the constant Adetermines tile characteristic di-
m1lbion in the theory) -the above mentioned operator P does not dif-
ferentiate itself from -time ordering operator P because one can de-
fine the operator within these domains in relativistic invariant
ways. But-within the scope of the microscopic ex.-CLI -is the defini-
ij
tion of operator P in relativistic invariant ways to be generali-
zed. This generalization is vastly arbitrary, a suitable term for
the Matrixelement of selfenergy is offered and given a short dis-
cussion. The above mentioned S-matrix suffices in the area of ma-
croscopic space-time for the conditions of causality. One dan dem-
onstrate the unitary in the same manner as for an S-matrix with-
Card 2/3 out formfactor. (Without illustration).

Concerning the Construction of a phenomenological PA 2689
acattering matrix with non local interaction.
ASSOCIATION
PRESENTED BY
SUBMITTED 6.8.1956
AVAUMLE Library of Congress
Card 3/3

AUTHOR B.-MASHE'll](OV V. S. PA - 2972
TITLE ConcernijiL some possibilities -,f formulation of a
relativistically invariant theory of extended particleii
(0 vosmo-zlliioRtyakh postroyeniya relyativietki-
invariantnoy teorii protyazhennykh chaatits.-Russian)
PERIODICAL Zhurnal ::kspe~rim, i Teoret. Fiziki 1957, Vol 32, Nr 3,
PP 566 - 569 (USSR)
Received: 6/1957 Reviewed: 6/1957
ABSTRACT The present paper examines various problems of the
theory of extended particles on the basis of the example
of the classical (rion-quantized) theory of the dyna.mically
not de-'ormed extended particles which are in interaction
The theory has no HAJJLT0NIAN-- like structure, but may be
formulated by the LAGRANGE variables Y ky"k Au,Ae,,4 and
also by the HLT.ILTONIAN variables
1~1 9 % IA1,4, j Tc &, .
1. The LAGRANGIANS and the HA111ILTONIAN Variables. The
present Paper inteads to investigate also the possible
covarianL formulations. The follovine equations of motion
of the particles and the field are easily obtained from
CARD 1/3

PA - 2972
ConcerninC some pos~;ibilities of formulation of a
relativistically invariant theory of extended particles.
a variation principles:
+00 4
mi du,,.,/d.su x),(, (X - xi)d x = 0
2 +00
b A L (X)Ibxeubx P. + G (x - xi ) ui.(. d 9i = Or
-00
In the non-local theory,. the expression in 6S = ~U(t)dt=O
under the inte,,-ral siEn may be represented in two essenti-
ally different forms. Also an analogous expression is given
for a "K~J.IILTOITIANII.
2. The many-time formulation of the equations of motion:
The theory within the framework of the many-time formalism
of DIRACIFOCK-PODOLISICIY may be generalized relativistical-
ly. Fox this purpose the HA1,11ILTONIAN system of equations
known from local theory is 6eneralized. The equations are
written dovin here explicitly.
CARD 2/3

PA - 2972
Concerning some posaibilities of formulation of a
relativistically invariant theory of extended particles.
3. The J:mpossibility of transition to equatione for
only one time is proved in short.
4. In conclusion the conditions of the compatibility of
many-time equations are dealt with in short. If only one
of the equations of motion contains a non-vanishing from
function, this inavoidably leads to an incompatible system
of equations.
(No Illustrations)
ASSOCIATION: Academy of Science of the U.S.S.R.
PRESENTED BY: -
SUBMITTED: 12. 2. 1956.
AVAILABLE: Library of Congreso.
I
CARD 3/3

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B A3171117107 v S DELYA11-Ov V. A.)
BUBEIEV E. G. llit'L=711 V. 1". TOILTCV, D.
T-ENdY17, _Mld!'T~G ST-01i -Iid-TTG.
of Particles in colijE3jons I-,Ot-..-nc.,-1
u
-nd rclcons," T.'uclcE-x PhLsIcs, '701. ~, no. 1, Jlov-IP~K~:. (-,*o Holini-id Cj~.)
Joint Inst. Nuclear Research Lab The2wetical Physics and E,gh EnerEZ7 Lab, Dubna.
Abstract: Some theoretical calculations pertaining to multiple production of
particles in nucleori-nucleon collisions at 7-10 GeV were presented in ref. 1. Some
prekiminary exp6rimental results obtained by irradiatiric phop4a_phic emulsions with
proton beam from the a synchrocyclotron of the Joint Inst Nuclear Research were Eiven
in ref 2. In the presetit paper we compare the theoretical results of ref. 1 with
the results of some new experiments. 372 stars, of which 50 were classified as proton
nucleon collisions, were recorded in NIhFI-R photographic emulsions along the traclm of
9 GeV protons accelerated In the JINP proton synchrocyclotron. The mean number of
charged particles created in these collsions was 3.6 0.5. The earigular distribution
W----- -------- G-A-6
of fast particles is obtained. As a vhod4 the exDerimental
results agree with the statistical theory of multiple particle production within the
limits of the experimental errors. Some discrepancy is evident In the srLall angle
range and may be due to the contribution of non-central impacts and to asyn7netry of
the angular distribution in the c.m.B.

PoLUM/rucleor Physics - Elementary Particles. C.
Abs Jour Ref Zhur - Fizika, 1,70 7, 1959, 14836
Author Barashenkov, ViS;, Maltsev, VA
inst Joint Institiitc for Nuclear Research
Title Multiple Production of Unstable Particles in Pion-Nucleon
Collisions
Orig Pub Acta phys. polon., 1958, 17, No 2-3, 177-182
Abstract The Fermi statistical theory leads too large a number of
produced strange particles. A model is proposed in which
the relative fraction of the produced pions, nucleons,
strange particles, and anti-particles is in better agree-
ment with experiment. It-is proposed that the statistical
equilibrium for K mesons is established in a three dimen-
sional volume with a radius rK ~--h/mKc, and for other par-
ticles in a three dimensional volume with a radius
Card 1/2

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FoU~17D/11-Jr-1,1v~r Mysics Elemoitary c
"lu Pof Zjiur Fiziln, I!-,
V.M.
S J"il.t Illstit.,:,'C~~ f-:r 1,7"Lic-lear Rescarch
Titlo On t1le :f StranCe Particlo Or .39
C 'A C
Ori - Pill, Act-L-1
U-si I statistical tho -FY ".avo C-"l-
culated the spcctra un~l the pr,,',;abiiity
-,)r :,f -,A ns . nuc lovis, ai,,cl strai--~ rarti cLD-,
in 1,111 c lli~ions at E Tcv. Tl,.c
soction. -,f ,)r:)Oucti-)-t --f K :..esons is aj~pr-ximatclly
thr-ce times ~:rcat--,r t~ia-i the experimel-tal valuo
(Referat L-.-ur Fizika, 1958; 113 -1,, 15,013). It, is
C~,.ra 1/2
22 -

, ~ 1.
Interaction of K-mesons, pions, nucleons, and hyperons. Zhur. eksp.
i teor. fiz 34 no.4:1014-1015 Ap "58. (MIRA 11:5)
1.Obgyedinennyy institut yadernykh issledovaniy.
(Nuclear reactions) (Particles, Elementar7)

TITL:~: 0., t I
0 d e- S t'V 1 -.C:~ 0 n C V 1 c - o v
u 10
P 'ucloons ~-,i4d
i,,'::l o r
P E` 1 L
o
A~P-STRACI' A c c t C, I I L) r c -,; in i o n t i e f c,, 11 o,.-; J i v e r r o",- e
Tiie results obtail.ed froni a 2o:.-.j)arisjn lietwee.-, the calcul-tions
to statistical t-.e-)ry and e-I--I.,eri:.--e-.tI for a -,;ida enerzy
indic%te t~ rel-,-LA,~e vui--ie of tle coi,n--.,A3 of t-,,.e inter-
actions het-vi-een t.-~ese --a-ticles L)ro:,O,~ t o-,)inions 6il'fer
a. to -~he ~Z!-Ollnt of in~cn-,c+~cm !~ctv.,eci. pions t--ncl ;,-me.3ons or. tne
`iund hyporons on t'.c as -.-Tell P.-; "between K nienons
a 'd n z, c] e(), . irect o-n tn . . ions is
I I -? s , a I s o i !- d . e S e -1 ", , erL, 0 1,
of -rE at i- t e s t , T; -- 2 ai i t o r b as e u-) o n i o v; e 11 - A-n o im e x o c r i:.-. e n -
t f-c- bi~'Iat~en )ions ard nuclcors
of ~c stro,IC
if 101i 'hOtIVIC-011 j)-c'IS -11d ;-,UCIOJ~12
1,'- 7. s, t c. f c-2 I ov ii-_7 i b t 1, i t i -j s
an d
,
f r C- 0 c t i o , I rj f 5 t 1 11 v c, 1 C, L; f r t~.Q
Card 1/ -5 s c,-.l c 1-il i-

Orl Intoraction On
and lly,-:erons
ticles in one n:l~ll t.-A~ s;l,]e
port-Lo?: of t,,c- striin,_-,e to nucleons
r XCL,(-,d:,, t~-10 ~'-Drt-lon 0-,-pcctQ~d, expcrii:Ient~,115,
nuclcors, )ions ,-,,-d
T
oc.,!=:~ in c,.,,c- ml,l t.-ic vc,2i- e for t-.e
_i ) a S.-r-Iler ta 1!1 t'liL t'ne. :):Irt of U~f?
S4 2-
e lj:irt i - 1 C. s fo-,::,--! irc ac:.e f, ,.e t V~, 11, e ~ -How-ever
r-tio the roi:iber of t~,r-- ~ti ...... -c- ,,-i--ticlez for:--d 1'r,
n - I-,- -,eso--s at E c
'-as 4, LL I i,, e l,' in the br U-;
T',e volu c e-,uili
fol TI!-', 1~1, :-Ie,,~ozw3 oc-lliri; i 'reatuea, c~crrespondiri~; volu-,c
fnr lluclew"'~ lild oacino- I r -. - i i -, c -i-ut`~Or part cl, the
~t-r~ nie for-c-U, no-- t',It~ of t!lo ratio ,,+//I"
the e-J"ouri-T.~ent '21,.c of il-,e ~;titistical thecry of
of cln 'be :lude to acree with t*.C,
only -Lf P. wie-l of -K-::,~esons with lAons and
t*.,-r; C-.s -I equiail-riurl for
- ~e t~:e St~,tj~tjc- -
nuc S, iF f1l.3611I.-.iod I,-
t"c ~:)Ctu-ro In ~itial volu:.-.e t'l-l-ar. in 'L,:c care
Curd 2/5 of LI:Id nucloonr- T~,---- lb,~;z~t ai-l;-e,-,:-,ent --,ttaa-led on i~,e

Or. t lie I,, i terr, cit ion Bcatv~cte:, 5 . '-'i 1 3 r-~C,
and H,, -,)erons
of tl-,e interaction of 1)ioi.3 -;:-ith tile nucleon.,
and hy:,,erons (V vq) i~cc to G(211 D ef 5) F i I J?
t,,~o :;m ~1~)I- ,I " . ;~j hd!: t I' _11, :,;,! 1'.''.. k I ~ ,,, C. " " 0 ~ 1 i 0 n, !.,;A, !,~ -11, 1~ C) v
13, V i.'~ e (I v e (I e va V ~, I0i-,iyevctpI-.iy for cri-tic!,,i rcilq.-,~r'- and K~D,
Tol--.tov for t1ne k1lisciission of' thn exa~ori:-onts T!ero are 7 refer-
encoo, , 1 of' .% i14 c". j.,-, Sovi (.,t
AS SOCL'.TIO" Ob",edinenn,.- irstiil.~t I.F~,11-,Iov, -j-, (Un~terl I-ictitu'e
of
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Ca-I 3/3

AUTHORS: Blol:hintsev, D. I., Barashenkov, V. S.,
Giish*-n, V. G.
TITLE: The Diffraction Scatterin.- of Fast Particles (DiffraI:tsionnI-,-,,,e
rasseyaniye bystrykh chastits)
PERIODICLL: Zhurnal eks-oeri!-ientallnoy i t core t i cheskoy fizilki, 11)5b,
Vol , 3" P IT-- pp. 311 12 'USSR)
ABSTRACT: The structure of elementary particles may be studied by
investi,_-ation of the elaztic scatteri.- of any radi,;tion
by these particles. Hitl~erto only the investi-,-atio,s carried
out by the Hofstadter (Khofshtadter) group, concerning
the scatt,~ring of electro:~s or. -.,aclei -nd nucleons are
kno;vn, they permit the determination of the form factor
of the electric char~re and of the majnetic moment, But
also the analysis of t--- elastica2 scattering of other
particle types makes it possible to obtain important in-
formation concerning the structure of t,,e nucleons and
nuclei. This Daper investi~_-_~-tes, as an ex=,Dle, the sca7terinE,
of ne,~;ative pions on nucleons. For the sake of simplicity,
Card 1/3 the dependence of the interaction on t~ie ~.pins and the

The Diffraction Scattering of Fast Particles SOV/56-35-1-59/59
"charge exchange" are neglected. Moreover, it is assumed
that the real part of these phasesis equal to zero:
Re 1 - 0. The exact solution of this problem will be
pul ished later. A diagram demonstrates the values of
IM ~1 for the scattering of negative 1,3 BeV pions. For
high energies the quasiclassical approximation may be used
with a high degree of approximation. The numerical values
of the cross section which were calculated according
to the quasiClaSBical theory agree rather wall with the
results of previous papers and this is one of the arguments
in favor of the applicability of the quasiclassical
approximation. For the averagesquare 11~ion radius" of
a nucleon the value (0,82 + 0,06).10-19 cm was found; it
corresponds (within the limits of experimental errors)
to its value for E = 5 BeV. The example investigated in
this paper is a special case of the so-called inverse
problem of the scattering theory: from the given scattered
wave the interaction potential is to be determined. The
authors thank K. Danilov for his help in numerical com-
Card 2/3 putations. There are 2 figures and 6 references, 2 of

D f
Re

21(l) PHASE I BOOK EXPLOITATION SOV/2414
4arashenkov, V. S., and Huang, Nien-ning
Secheriiye vzaimodeystv:Lya nuklonov pri energii 9 Bev (Interaction Cross Section
of 9-Bev Nucleons) Dubna., 1959. 5 P. XEROX COPYINo. of copies printed not
given.
Sponsoring Agency: Ob"yedinennyy institut yaderr,71~~- issledovaniy. Laboratoriya
teoreticheskoy fiziki.
No contributors mentioned.
PURPOSE: This paper is intended for nuclear physicists.
COVERAGE: The interaction cross sections dof C, N, 0, Br and Ag were computed
at E -, 9 Bev and found to be 240, 26o, 290, 900 and 1070 tb respectively.
Cross sections 6- and for hydrogen are treated in refefences 1, 6 and 9.
Data frcon previous works indicated that: 1) the total effective interaction
cross section (,.,Y4' ) at E - 9 Bev is 6 = 40 t7J (ref, 1); 2) the theoretical
value of the mean path of a proton in photographic emAlzion Ilford G-5 at
E - 5.7 Bev (reference 2) agrees with the experimantal value L - 37.6 arn
(computed according to optical models), if the distribution of nucleon
Card 1/3

Interaction Cross Seetion of 9-Bev Nucleons (Cont.) sovi'2414
density in hUclei is taken from experiments vilth fast-1-neutron scatttering
by nuclei (refereme 3) ancl when the theoretical vr.One ffor the interaction
cross section of an incident nucleon and a nucle:-n :Ln the nuclt-'is is chosen
as 6 a': 32 f:), which also agrees with the valueW = 31.3
t 1.5 t) att. B _~ 6.15 Bev (reTerence '+); 3) ~.-a_qpjj,'.ations based on
optica.L moaels show an acauxacy within a few pe.-c,!in" of ff = 6'- Vnere C;
is the interaction cros5 section of free nucleoTas - if -tLe (1~stri-girtion
of neutron density in nalei is taken from ex-per:Lnrit s h fast neetron
sco&t.tering '[.rjr these nuclei at E ,I I Bev (raferance 0). ne -Dred1cation olp
similar conclusions at B =9 Bev is made by the m-thars. Fi,4ure I shows a
curve of the computed values of the mean erea prilt T, L -6 ) of a 9-BeV
proton in photographic emmlsion 1411G~T-R eu E5 " _? . Th-is differs
by only a fe-yr percent from an analogous cui-re- Y, ~ ).' nryqmte(i for
the case where 30 tb. The theoreticn~_ vzare o~., -the path equals
the experimental value, L = 37.1 t 1.0 = (ref 1).9 if ff 30:1-tt -5/17GP*
A rougher experimental value L = 34.7 + 1.5 cm, ~ivendn referen(.-e 8 and
figure 1. results in a protep-nucleon cross-section value of 33 tb
The values obtained for 15 are near the total proton-proton interaction
cross section at E = 6.15 Bev (reference 4). The number of component etoms
a/Y .10-22per =3 in -photographic emulsions Ilford G-5 and I=I-R was
3.37p 2.93,,ff 1.36, 1.39, 0.29, 0.57;A/ = 1.02J. 1.02; an
C dy'4
Card 2/3

Interaction Cross Section of 9-Bev Nucleons (cont.) SOV/2414
1.02, 1.02 respectively. Results of this investigation together with those
of reference 9 show that the optical method may be -successfully used to
describe interactions of elementary particles at E.= I Bev. At E:~> I Bev,
nucleon-nucleus interaction cross sections proved sensitive to the form of
diffusivity of the nuclear boundary. In this respect, interactions vith a
collision parameter of the order of a nuclear radius make a major contribution
and offer new possibilities for the experimental study of a diffusion
nucleus. The authors thank P. Markov, K. Tolstov, E. Tsyganov, M. Shafranova,
and N. Bogachev. There are 9 references: 4 Soviet and 5 English.
TABIE OF CONTENTS: None Given
AVAILABLE: Library of Congress
m/mg
Card 3/3 11-2-59

S/058/61/000/012/024A03-1
A058/A101
AUTHOR~ Barashenkov, V. S.
Optical analysis of fast nucleon atnd pion interation wish nucleons
and riuolei
PERIODICAL; Referativnyy zhurnal, Fizika, no. 12, 1961, 1118, ahr.!,r-v~t, 12B,529
(V sb. "Probl. sovrem. teorii elementarn. chastits", r1o.
1959, 1112-148)
Interaction of fast particles with nucleons and nuclei I,. ch, e
ized by the absorption coefficient K (r; T)~~e k(T)~(r) and the refractive index
N(r; T)c--- n(T)?(r), where ~(r) is the density of t e nuclear material at
distance r from the center of the nucleon or nucleus, and T is the Mnetic
energy of the particle. The values of these coefficients are determined ty
ineann of comparison with experimental interaction cross section-data, For
'J' - - 1 130 ~V' I I (T) -- 1, (T) .With increasing energy n(T) ---~P,0 and k(T)---,~. const;
interaction in this cast, han, n typical diffrantJon character. The disn,ibution
of nuclear material p(r) in nucleons and in nuclel. an,l tho rf-~m
~,,rd 112

21 ( P)
i,TE0R'_ V. S., Belya2~ov.. V. A.,
F5-ff-3H-u--f-M V* V.., Dolkhazhav, N., Kirillova, L. F.,
Lobedev, R. ~'%? Malttsev, V. M., ?:Arkov, P. K., Tolstov, K. D.,
Tsyganov. B. IT.. Shafranova, r. G., Yao Ching-hsieh
TITLE: The Interaction of Fast Nucleons With Nuclei of the Photo-
emulsion NIKFI-H
PERIODICAL: _'.tomnaya energiya, 1959, Vol 7, Nr 4, Pp 376-377 (USSR)
ABSTRACT: The present paper deals with the interaction betweezi 01 Be-
protons, which were accelerated in the bean of the syuchxo-.
hasctron of the Ob"yedineanyy institut yaderlWkh issledove-lAy
int Institute of Nuclear Research), and the nuclei of a
M
photoemulsion of the NIKF1-R type. The results of these
measurements axe shown by a table. On the basis of the data
thus found it is possible to draw several conclusions as tc.
-the mechanisin of the interaction bet%%,aen a fast prcti-,n and a
nucleus. If the primary nucleon-nucleus collision _J~; Wi
interaction betyleen nucleon and channel, the velocity of the
center of mass in an interaction of silver and bromine with
the channel will be considerably less than in an interaction
Card 1/3 with light nuclei. Therefore, also the number of s-particlas

The Interaction of Fast Nucleons With NLicloi of the SOV/89-7-4-12/2B
Photoemulsion NIKFI-R
must be considerably greater. In the experiment, the ni=bers
of s-particles for light and heavy nuclei are, however, nearly
the same. This is explainable on the basis of the cascade
mechanism of interaction, in which the energy of the s-particles
decreases rapidly in cascade collisions. The multiplio~ty of
the particles produced decreases simultaneously. In the case
of the greater number of g-particles, nucleons are concerned,
which may be explained by the cascade mechanism of nucleon -
nucleus interaction. Also the agreement between the transversal
momentum p for g-protons originating from interactions with
91p Q
light and heavy nuclei points in the direction of the inter-
action cascade mechanism. Besides, a search was made for
strange particles by employing the method of investigating
according to areas. The cross section of the production of
k+-particles with an energy of E < 140 Mev in a medium-
weight nucleus of the photoemulsion amounts to
27 2. uctJ on cross
(5 t 2)10- cm Besides. the amount of the prod
section, the wide angular distribution of the k--MeE;OnS? as
Card 2/3 well as other facts indicate that a noticeable fraction of

Iateractic- -~,f Fast Nucleons "Vith ei c,f t-e
Photoem.ulsion
jlov; stran -e particies _Js proclu,;eO, iii ~7ii intranuclear
process. Rwthermore, ILhe i_iediun.--aei-ht enerr, losses of' 2-
-Y
fast nucleon are evaluutt-d iii the case of a Iin,,-Ic n-acleo-_.-.
nikelcon cr~llisioii. A qBo-,,-jrctw). -iveL; up an of
1 0.8) Bw to a iue0Jiuii-v;e-i6ht nucleus of the plotoemuls.ion,
... hich amounts '-o (60 � 10) of 4ts initial energy. 4.0r Be-.,-
~ze used for the production of pions, and 1-05 Bev are tr,~rj,-.
ferred to the nucleons of the riuclous. As a proton in m-_. medi-im-
vieight nucleus undergoes approximately 2 collioJons, the proton,
in one sin-le r2icleon-iracleo-i collis-Loia, loses AIE ~_ 35 �_ '10
of ilts initi-al energy. By means of other measuraments of the
pien energy spectrum carried out independently of the rxesent
~;)oper in a nucleon-micle-as collision AE - 40 t 10 ~1~3 is obtained.
The statistical theory of urmitiple productioi, furnishes
I
6E = (40 -- 50) The aut`,.ors t"iLcak G. V.
Z. 1?,uznetsova -ild for lie.'..P i..,. the moasuremento,
_L an I -
wid. L. Popova fbr iiis asoistz.--ice -',I ajy[;ir.~7 measurinG resu t,.
.here are 1 table m-d I reference.
Card 3/7)

BARASMTNOV, V. S.
V. S. Barashenkov a~ld B. MI. Barbashov
"The Electrical Folarizability of the -14cson Cloud in the Nucleon"
Nuclear Physics, 9, No. 3, Jan. 1959, 420-423' (North Holland A~blishing Co., Amsterdam)
Joint Institute of Euclear Research, Laboratory of Theoretical 111-,-sics, Dubnal, USSR

210)
AUT-110.~~S: I.;arashenkov, V. S., Naang Nienl-ring SOV156- -~6- 26/71
TITL7: '-~'he flonuniqueness of the phase Analysis of Proton-Proton
Collisions (Noodnoznachnost' fazovogo analiza Droton-protonnykh
stolknoveniy)
T "hurnal eksperimentallnoy i teoreticheskoy fizilki,
19590 Vol 56, '~1- Pp 8~12-81M (USSR)
A I;P A C'-~ in a niuiber of papers the analysis of 1AL-:,h c;ier--!- nucleon-
nucleon scattering experiments were carried out on the basis
of the phenomenological optical model (Fefs and in
references 1, 2, and 4 it was further assumed that
Ile ii 42-Im ~, holds for the real part of tho cor,,ipl x ph- s~
Also the authors of' this paper proceed from this model and
develop a method for phase ;Ilift analysis of pp-collisions at
energies of E -,--10 Bev on the further asgumption that in the
case of a spatial distribution of the absorption coefficient
K = K(-o;r) it holds for tho refraction coefficien+ I'(T*;r)
1 + 14 (Tpjr) ;.-,l and that for nucleon-nuclous interaction
Card 1/2

The 1.onunioueriess of' the Phase Analysis SLV/~ _/71
of' Proton-,~roton Collisions
K(E;r) = !,(E) ~ (r) and ,~O(_E;r) = n(l~) ~ (r), v;here ~(r) denotes
the density of nuclear matter. For E-1 ealDev it vias found that
the refraction- and absorption coofficien~s are of 4111,~ Same
order of' ma~7nitudc. '.Ne croos sections calculaf,ed bv the
authors a~-~roc within the error limits with
obtained values. Thus, at E = 10 Bev, ert = _~0.10 -1cm-
is found for the total scattej~irq,, cross section, and
(5'in = 23.0.10- 27 cm 2 is found for the inelastic scattering cross
section, Which is in agrooment with the values dctermined at
Dubna (Ref 7). For other energies ',,he authors obtained the same
result as Grishin, Saitov and Chuvilo ('~Lef 3). -Further results
~or 1-5:!9E:5-,10-0 Bev are contained 4n tables 1 and In
conclusion, the authors thank D. I. Blokhintsev J-1-or discussions,
and I. V. Chuvilo for discussions and critical renarks. -7here
are 1 figure, 2 tables, and 7 references, 4 of wl',ic;h ~re Soviet.
ASL~11~'CIA*I'IC,i: Ob"vedinennyy institut yadernykh i3sledovaniv
( United J,,jE_-,tjtute for i,'uclear Research)
S 1) 1 -;, 2, 71 7): cleptember 1, 1956
Card 2/2

21(7) sov/56- 36- 71- 5o,/71
AUTTIORS: Bnr:ishen1zov, V. S., Malltsev, V. I,,.
TITLE: The Production of Stran,-'E! Particles in (pp)-Collisions at
13nerCies of 3 Bev (Ronlideniye F;tr.,innykh chastits v (pp)-Stol-
knoveniyakh pri enerGii 3 BeV)
PER! ODI C.'~L: Zbiirna 1 ek s peri ment al n oy i t e or c t i c he sk oy f i z i k i 1 15
Vol "116, Nr 3, pp 933 934 (USS-R)
ABSTR,'~CT: In a number of earlier papers the withors developed a stati-sti-
cal theory of the multiple production of stran-e particles.
For (nN)-collisions satisfactory agreement with the experi-
ment is found if the energies of colliding particles are hiu-h.
Noradays experii,iental verification of theoretical computations
of (pp)-collisions is also possible. For the inelastic (pp)-
collision cross section at 3 Bev 26 mb is assumed, which,
according to references 1-3, results in a calculated Pro-
duction cross section for Y,+-particles a+= 1.0 mb for V=V 2
and (~+=0-05 mb for V=V 3* The calculated production cross
Ca-d 1/1 section for all strange particles is a SC 1-5 mb (V= V 2)

The ~rodilction of StranCe i;artioles in (pp)-collicions SOV/56-36-3-50/71
at Enerl-ies of 3 Rev

and 0-07 mb (V=V,). Experimentally, Btitriel ot !i1. (Ref 7)
obtained the followin,"; for tho Kt-production cross section
(momentum-.1.9 m
= 140 Miev, 9 = 1800i-,,, c.m.s., ("p)-
, m
11
I
= (4-5� 0-9).10- 32 c M2Is t e rad i an /',- ev
collision at 3 Bev): 0
exp
(o+= 0.2 mb). On the assumption of an isotropic angular
distribution in the c.m.s. the present paper obtnins a s j T'j j-
lar valuo for all moi,.ienta for V=V 2 d+- 0.33 mb and for
V=V 3' This value, however, deviates by several orders of
-ri,-nitude from the value ealculated for V=V only on the
3
basis of statistical weights and without using 6 and the
exp
momentum distribution. There are Q. -references, 2 of
-ahich are Soviet.
ASMCIATION: Ob"yedinennyy institut yadernykh issledovaniy (Joint Institute
for Iluclear Research)
SUB'.'ITTED: October 27, 19518
Card 2/2

(7)
AU i1ii ORS: 13arashenkov, V. 3 11 :.'na
---------- - N rl'~ lie
TITLE: Interactaon Cross Section oF' 9 Bev Nucleons (Secher--.ye
vzaimodeystviya nuklonov prl energii 9 BeV)
PERIODICAL: Zhurnal eksperimentallroy i teoreti,~heskoy fiziki, 9'~~j v'D,
Nr 4, PP 1319-1321 (USSR)
ABSTRACT: N, P. Bogachev et al. (Re f 1) obtained a va'ue of i~~ 40 111b fo,~'
the total (NN)-interactio n cross section at E = 9 Be,:. By us-ing
the expezimental data of the proton range
is, however; poeaAble to obtair mu-ob mr,--e accura-.e ---a-ues, An
investigation of the mean ranges of protons in phntceynule--,~n
Ilford G-5 at E 5.7 Bev gives an L-value tha-- agrees rail W---.-h
that determined by mears of an :~.~ptxcal, mr.~del) tbecrRt-.c31-.'-T
(L = 37, 6 --m)~ This resul -~'s in mb, alF~ca w I
-rith t~ie exi)--mrimental val ue 7 5 ) m1h a-: F 0
Fo~- imest-igalions a" E = 9 Be- in NIYFI-R emi!ls-~ons
6) a !figure shows The course of the fvnct--ior. L,
3o mb, the theorct~caL L-value. equal t:-, h e.
.0~5
Card 1/2 per--~mentai value: L r- (3-17 1 +- " 0) --Imi To a

interaction Croon Section cf' 9 Be-j Nuclcon,3 3 Ov 0
5,17 8
'Of Of -a i:
C', 14, 0, Br, and Ag a-,-F C) Bev g4 Vep, ~40 ,2
spe c t.,~ ve 1 y Tho.-,e rt, vul - t~ I-a h~,-
can be used with succes,3 for "he rurpD,3e of
t e r a c t _4 o n o f e I -? ir en ta ry p a - t. - .: I -- ~ a t E ::". ' BTho
(:~,nclusion shank F. Markov, K Tolstc--~-, art," ET e-
(:Uss-ons and N Bngacle- h-.-
1 f --g,-,re and 9 ref eT~-n,. e-.,, 4 - -F w-. --l', :ir~, .5,:.-
ASSOCIATION: OW'yedlnennyy yaderny~h :LcsIedo---an-.v ~TT--,
for Nuclear
SUBMITTED: jani-,arY 3, 19-5q
Card 2.12

21(l)
AUTHORS; Blokhintsev, D I., Barashenkov, V. S., SOV/56-306-5-73/76
Barb-ashov, B. ;,-..
TITLE: The Electromagnetic Structure of the Proton and
of the Neutron (Elektromagnitnava struktura protons,
i neytrona)
PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fi7iki, 1959i
Vol 36, Nr 5, pp 1611-1612 (Uss,~i)
ABSTRACT. The experimental results of the dis.ribution of charge
and ma.-netic moment in the nucleon are known to be in
sharp contradiction to meson-theoretical calc-L,.lations-,
T',e authors of the present "Letter to the Editor" are,
however, of the opinion that the difficulties are mainly
due to an inaccurate interpretation of the fact that the
usual intervretation of llofstadterls t)'.I~OL'iments is
actually neither unique nor accurate, but only possible.
The discrepancy said to e-.-.ist between t'le distribution
-~v 'ar/r2
law of iieson charge density accordint:, o Yuka a e
Card 113 and the experimental one (-e-P) is of no real importance

The E'lec'rcmaenetic; Structure of tho Proton -and SOV/56-36-5-73/76
T
of ',Dt~ Neutron
because the ran,.-es of applicability of these expressions
are quite different. Proceeding from the expressions
found by Salzman (Ref 1) for the total charee densit,
?Tr +~k'--' andfromtlnemapietic mo::~ent of the :7,e3c:l
clo,-,d m(r~ m (r) + m (r) (one-pior, state), the cutoff
j IT k
method is briefly investigatud, and for the electric
radius of the pion cloud 1 9j, C) 2, and for the
e IT
maiGnetic radius 0-40J1/JL,,1)' is obtained; for the
m
charge of the pion cl(.,:id Q 0.76 e and for the magnetic
molnent m-rl= 1.25 et/2blc is obtained. The diotribution of
charge and ma-netic moment in the ~c)re amounts to
e - r "a
r) /b-Wa
Qk denotes the charge of the core, and mk -its ma,~netic
moz-,ent. It is '.-:ro,;,,n from experiments that for the neutron
Card 2/3

The Eic~ctro-~ar-,-etic Structure of the Proton and Sov/r~ 6 - 7 - 7
of the Neutron
2
r the anc::,alous mugnLtic ;:,.oment of the io i C 1,~ o.,,
e n 0 ; 0
was experii.,,entally determined as being m T 8 5 A/2M c
2 3' 2
)/2 - Thus
= < r.
k + 'C3 e n , P
(0,7f )2 is obtained, .~,hich a~;ree3 well with the expe21:~;Cnt.
A figure shows the charCe distribution d(r) for protcn and
neutron and their cores. The statement made by the autnors
shows-that the result obtained by llofstaadter may be
considered to aE;ree very satisfactorily ,,--ith the
of the meson theory. There are 1 figure and 4 ref-lerences.
ASSOCIATION: Ob"yedinennyy institut yadernykh issledovaniy (Joint
Institute of Nuclear Aesearch)
SUBLITTED: March 5, 1 c~-59
Card 3/3

21 (7)
AUTHORS; Barashenkov Malltsev, V. 11. SOV/56 37-3 56/62
TITLE: On the Reoonance Interaction of n Mesons
PERIODICAL: Zhurnal eksperimentallnoy , tooreticheskoy f,,ziki, ~Q~19:
Vol 37, Nr 3(g), PP 684 686 (USSR)
ABSTRACT: For the explanation of the (Ti''p) cross section maximum near
E = 1 Bev a number of authors developed the hypothes3s of
pion.--resonance interaction. It also serves the purpose of ex,
plaining the great multiplicity in the case of the nucleon
antinucleon annihilation of pions and the inelastic (TI-P)
scattering at E >,", Bev. The authors of the present. "Letter to
the Editor" show, however, that the assumption of a (7,,n) :re--
sonance interaction in all these cases (11~,fs 1-8) is not
stringent, because the experimental. resu"'s may also be ex-
plained in a different manner. In this conne.-.-I-11~%r. the auThors
investigate the conclusions to be drawn from the assump-tion of
a (717L) resonance interaction for the inelasti3 interaction of
particles at E,>1 Bev-, when many pions are produced, As a -,.on.
crete exa 'mple the inelastic Oi*p) collisiDn at E = 5 Be.r. 1.5
investigated. Without assuming (nn) resonance anterao~i,)n thi3
Card 1/3 case has already been dealt with in reference 9. (in -~he basis

On the Resonance Interaction of -a-Mesons SCOV/5,6- 37 -3 c,,5/62
of the results obtained there it is found "hat the following
holds.-
Theoretical variant Number of prongs of ~he s',ar
2 4 6
No (nn)interaction 0.98 t. 0. 12 0.99 0.116 2 1,'4
'With (nn)interaction 1.21 + 0.15 0.83 0.113 O.ei.q i 0.28
(Dyson; S=O,T=O)
With (un)interaction 1.38 t 0.17 0.71 0~1*, o.64 ~ 0.36
(Takeda; S=O,T=l)
As shown by the above compiled data, the theoretic-3.1 results,
without taking account of a (nz)interac-,ion, are well able to
represent the experimental results, Considerataon oil the latter
(especially in the Takeda variant) only makes them worse. Ac
cording to the theory without (nTi)in~era,-,1,-icn the fraotion of
strange particles produced in inelastic (Ti'p) ~ciisioz-'- s arrjounts
to 8.65 (5-5% K+ and 0.3~',, K''). According to Dyson this fraction
amounts to 6,4, and according to Takeda -nly i-0 5.7'~'O- Experi-
Card 2/3 mentally, however, among 110 inelastiC. 3tarS only 4 bases of a

On the Resonance Int0raCtion of it-Mesons SOV/506-37-3-1)6' 2
i . /6
production of strange particles 77ere found 3-6c"O)~ A-
cording to reference 10, however, Jit appears to be very P!-oba-
ble that among the remaining 106 stars there wero a-ls-- 3U.--h in
which, though those strange particles were produced, "hey wer,~-
not disintegrated within the ohamber and were thereforE- not
recorded, There are 1 table and 11 references, 2 of wh-l,,~h are
Sovi6t.
ASSOCIATION: Ob"yedinennyy institut yadernykh issiedovaniy (Jo-Int Inst-itute
of Nuclear Research)
SUBMITTED: May 20. 1959
Card 3/3

21 (1)
AUTHORS: Blokhintsev, D. I., Barachenkov, V. SOV/53-68-3-5/11

Barbasliov, 11. M.
TITLE: The Structure of Nucleons (Struktura nulzlonov)
PMIODICAL: UsDekhi Tizich~%skikh nauk, 191-59, Vol 68, Nr 3, PP 417-447 (USSR)

ABSTRACT: in chapter 1 (introduction) the authors discusvILkawals Theory of
nucleon interaction by means of a ineson field as well as the
physical model of a nucleon represented by fiiTure 1 with core,
pion, and K-meson shell; the core dimension is given as amounting
to -1/Mc = 2.1-10- 14 cm. In the folloiviii,- c-apter 2 the methods
of investigatinm particle structure are lealt ,Ath. Besides the
recoil effect the inelastic interaction i)roces.,.-es are discussed
in detail. Table 1 shows the statistical e-ror~i of cross section
measurements of inelastic collisiontl of -~) :,ui~, a uith Fe-nuclei
at hi~~Ji ciiortios for four enovzt- Tl~e 11;-r-T1 a:id
"black" doinains in the nuj~leun aea dealt -1-l'itli (.Yij 2). 601,1e
other methods are mentioned and a table shows the wave lengths
of various ra~,o. In chapter 3 the electro:..a~rot
- 11 ic stracture of
the nucleon is theoretically dealt %,.,ith, and the theory developed
Card 1/4 by Chew and Low is especially bLd:en into ac-!ount. Table 'i

The Structure of Nucleons
SOV/53-68-3-5/11
represents the distribution of the electric charge in the pion
cloud of the nucleon. The most il~ri-ort~iitl exoerimental results
are ~-iven separately for proton ~~id neutron. Chaptt-~r 4 is
ontitled "Critical Remarks -ind nn Analysi, of the kL-peri::-,ent_-,
Carried out-by j1ofstadter"; in the individual parts the liT.~ait:~
of electrodynamics, the part played b,,; i.,~elastic processes, -rid
the analysis of the scatterinG if olectroas oii protons an6
neutrons is discussed. Fi~;urc 6 o-hows t,io eiectronf~7110tic Ft.--acture
of protons and neutrons in forl-.1 of Tiqe curves
dp(r) and d n(r) viere taken from lpape-_s by -HofsT~idter. Chapter 5
deals- with some structural effects, -,f nizeloons. Ti,,,o problemo
connected j~,ith the electroma,~_-notio of nucleons are
discussed: the electric polarizibilit,-., of the electron cloud iij
the nucleon according to Chew; the factor xof = og is jiven
p
as amounting to 4-10-43 CM3 / A 6 -1.4- 10-42 cm3, which is lower
than the value given by Yu. A. Aleks-androv. In the second part
of this chapter the electromagnetic mass of the nucleons and
the stability of protons ~accordin to reference 59) are
Card 2/4 investigated. Chapter 6 deals with theoretical experi-irients

The Structiare of Nucleons
SOV/53-68-3-5/11
carried out for the purpose of interpreting the electromagnetic
structure of the central nucleon ranges. Whereas in the
procedin- chapters the peripheral ranges of nucleons were dealt
with, the following chapters deal with the theory of central
parts. Individually, the influence of strange particles, the
contribution of nucleon-antinucleon pairs (according to
I. Ye. Tanzi, figure 8), and some details of the theory of the
form factors and dispersion relations are dealt with. Uhapter 7
deals with the nuclear structure of nucleons. Several problem5
connected vith the electroma.-netic interUtion of nucleons in
the nucleus (nucleons am-on.- thems-*elves, nucleons with pions,
K-mesons, and antinucleons) are investigated. The cores of the
nucleons are briefly dealt vith (several experimental results
obtained at the OIYal (Joint Institute of Nuclear Research) are
given. - Figure 10: Histograms of pp- and pn-collisions at
9 Bev (proton-synchrotron) are -,iven. The optical model of the
nucleon is discusoed in detail anO, so is pion-pion interaction.
In chapter 8 the authors deal with the theory o 'f the optical
nucleon model: the equation for nion-nucleon scattering is given
and discussed, and so are the conditions for the occurrence of
Uard 3/4 a complex potential. Uhapter 9 finally gives quite a short

The Structure of Nucleons
summary. The material of this
ori-in. There are 12 ficures,
0
27 of which are Soviet.
FIOVI 53-68-3-5/11
survey is mainly of Western
5 tables, and 60 references,
Card 4/4

3- 0 u-,
S/089/60/009/004 /007/0 20
B006/BO70
AUTHORS- Barashenkov, V,, S, Syan' Din-chan
TITLE~- Beams of High-energy Gamma Quanta
PERIODICAL! Atomnaya energiya, 1960, Vol, 9, No. 4; PP 300 - 301
TEXT- The ordinary method of producing hard gamma rays is to use
electron accelerators. Gamma rays of up to 1.06 Bev can be produced in
thiq- way (Stanford linear accelerator), Large proton accelerators as,
the proton synchrotron of OIYaI (Joint Institute of Nuclear
Re5earcLn)-in Dubna produce high-intensity beams of still harder gamma
rays., The main gamma source in such accelerators is the decay of neutral
picns generated by collisions of the accelerated protons and the target
nucl,~-ons, Statistical calculations showed that the mean number of gamma
quanta produced per nucleon - nucleon collision is equal to the number of
charged pions produced in such collisions (Fig, 1) The gamma quantum
distribution can be described by the following expression:

Beams of High-energy Gamma quanta S/Ou/N"R09/004/007/020
B006 B070
Pmax P
W (k;0) = 2 W (p;O) dp/ C+ r.,2 max W,(p;O)dp/p, W (p;O) describes
3" -11 TP JU - 11
the distribution, p momentum, the angle of emission of the
neutral piona produced in the nucleon nucleon collisions; k and 0 in
the W function denote the energy and the angle of emission of the gamma
'r 2 2 ) __'~
quanta in the laboratory system; K = Ik'(!4k 0/k 1141; k gamma energy
in the rest eystem of the neutral pion, the n0 mass This furmula.
>,,-
holds for k 0,5 Bev, but may be used for rough estimates also for
k~--,:0,2 Bev. Since the experimental values of 'V,(P;E)) for the proton
synchrotron of OIYaI are not yet known, the authors calculated this
funct-Lon by using the statistical theory of the multiple production for a
kinetic energy of the accelerated protons of 10 Bev~ Figs~ 2 and I show
the calculated sppctra and the angular distribution of the gamma quanta,
k
max
W?' (k) - 2TTW r(k;O) sin 0 d0 ; W Je,) ~ WY(k;O)dk Fig 4 shows
0 3 0,2

8'' -
Beams of High -energy GP~L:ui,- S1089,160 009f/004/007/02C-3
B006/BO70
IT
W,(k;C) for different 0. The normalization 2n sin 0 (10 max W_(k;O)dk=1
0 b
was chosen for W (k;O),, As the diagram shows, most of the gamma quanta
are emitted in tL region of small angles. The intensity of the radiation
decreases rapidly with increasing energy of the gamma quanta.. The authors
thank U., A, Markay for suggesting the topic, for discussions. and for
advice. They thank V. I. Veksler for comments and discussions. There are
4 figures and 2 references; 1 Soviet and 1 US,,
SUBMITTED! April 4, 1960
Card 3/3

S10891601009100610061011
B1021B212
AUTHORSt Barashenkov_,__V_.._S., Hsien Ting-ch'ang
TITLEt Production of fast-neutrino beams
PERIODICALt Atomnaya energiya, v. 9, no. 6, 1960, 489-490
TEXT: In the past various tests have been made with fast neutrinos;
some have been made to check experimentally if, at high energies, the
weak interaction will change over to a strong interaction. High-energy
neutrino beams are produced in powerful proton accelerators, such as the
proton synchrotron in Dubna and the 30-Bev accelerator in Geneva.
Neutrinos are produced during the decay of charged pions formed through
the collision of fast nucleons. The energy spectrum and the angular
distribution of these neutrinos may be calculated if the energy spectrum
and the angular distribution of pions produced in NN collisions are
known. In general, this problem is very difficult but can be simplified
if only fast neutrinos and small angles (6,,) are considered. Here,
neutrinos with E> 1Bev and E), of a few degrees 2are considered. The use
of a neutrino detector with an area of SD -I M located several meters
Card 1/4,

510891601009100610061011
Production of fast-neutrino beams B102/B212
from the target justifies such an approximation. If W,,(p;~) represents
the momentum distribution of the charged pions (9 is measured to the
direction of flight of the primary protons), then the neutrino spectrum
at a distance L from the target will be given by
Wv(E;8;1,) - a ~ W, (P;B) Ll -exp(- -!~ 1)' -42 with a = m2/(m2_ 2); m denotes
),aE/M 1 P j p 2
the pion mass, /,tthe muon mass, and 1 = Tc-10 7.68 (T represents the
pion lifetime; L is given in meters). Fig. 2 shows neutrino spectra for
E) - 00 in the laboratory system. Neutrino spectra --re only slightly
dependent on the angle; this is also apparent in Fig. 3, where the total
neutrino flux is shown as a function of L for E;>1 Bev and E> 2 Bev at
0 0
0 - 0 and 9 = 3 . The limits of the neutrino flux at L = oDare given by
WN(e,co W(2)(Q,OD
9 V 1)
00 1.5 0.18
30 1.4 o.16
(see Fig. 3). At a distant of L = 30 m, 1.1-10 neutrinos will pass
Card 2/4,

'Production of fast-neutrino beams
S1089,16010091oc6loC6,1011
3102/B212
through 1 cm2 of detector area per inelastic NN collision event; at
L = 50 M, 0.6-10-8 neutrinos; and at L = '100 m, 0.27-'10-aneutrinos. The
authors thank A. Markov, R. Asanov, and 1. Polubarinov for (11scussions.
There are 3 figures and 6 references: 4 Soviet-bloc and 2 non-Soviet-bloc.
The reference to the English-language publication reads as follows:
.R. Sternheimer. Phys.Rev. 99, 277 (1955).
SUBMITTED: June 22, 1960
Card
V~

BARASEENKOV, V.S.~ VAL'--PEY [Wang-Ptei.).: MALtTSFV, V.M.
Pulse distribution of particles generated in E = 9 Bev. inelastic
lal-collisions. Zhur.eksp.i teor.fiz. 38 no.2,650-652 F 160,
(MIRA 14~-5)
1. Obl'yedinennyy institut yaaeimykh issledovaniy.
(Collisions (Nuclear physics))

S/053/60/072/001/003/005
B013/B060
AUTHOR: Barashenkov, V. S.,
TITLE: Interac ti.on Cross'Sections of High-energy Particlesiq
PERIODICAL: Uspekhi fizicheskikh nauk, 1960, Vol. 72~ No. 1,
pp. 53 - 74
TEXT: Most of the latest information concerning the interaction cross
sections of high-energy particles was obtained with accelerators in
Brookhaven, Berkeleyq and Dubna. Only a minor part comes from experi-
ments with cosmic rays. Experimental data on*the interaction ~,-ross sec-
tions of particles of different kinds at energies of E >_ 0.8 Bev are dis-
cussed and interpreted in the present paper, Phenomena arising in the
high-energy range exhibit a number of characteristics which are, how-
ever, the same for the interaction of different kinds of particles.
Tables 1-3 give experimental data concerning the interaction cross sec-
tion of nucleons on the basis of data given in Refs. 1-30. The more im-
portant among them are illustrated in Fig~ 1. The curves drawn here can
be used for the interpolation of experimental data. The experimental
Card 1/3

interaction Cross Sections of High-energy S/053/60/072/001/003/005
Particles B013/13o6o
values of (nN) interaction cross sections are given in Tables 4-6
(Refs. 31-40,42-46,84,90), and the more importftnt among them are illus-
trated in Fig. 2. Table 7 and Fig. 3 show the now known values of CV-10-
interaction cross sections, on the strength of data from Refs. 9 and 55.
Tables B-10 and Fig. 4 contain experimental values of the interaction
cross sections of charged K-mesons with nucleons, on the strength of
data from Refs- 59-60. Information on the interaction of n-- and K-mes-
ons with n-mesons is at the present state of research only available
from the analysis of indirect experimental data (Refs. 61-67,72j89).
The following is dealt with in the theoretical interpretation of experi
mental data: stability of interaction cross sections at high energies
(Refs. 66,69); equality of interaction cross sections of particl95 with
antiparticles (Refs. 70-72); dependence of the cross sections on iso-
topic spins - Figs. 1,2,4-6 (Refs. 72,76,79); dependence of the cross
sections on the spins of colliding particles Refs. 72,79-81.). The ex.-
perimental and theoretical data supplied afford a fairly clear quali-
tative picture of the behavior of interaction cross sections of nucleons,
antinucleons, n- and K-mesons with nucleons in the energy range
E--(1-10) Bev. Quantitative data are; however... insufficient in a number
Card 2/3

Interaction Cross Sections of High-energy S/053/60/072/001/003/005
Particles B013/BO60
of cases. The author finally points out two problems of basic importance.
One of these raises the question as to how far the total cross section,
the elastic and the inelastic cross sections remain constant at E --> cx).
The other one concerns the research of possible perturbations of the
equality of interaction cross sections of particles and antiparticles.
An annex deals with the mean free path of fast particles in photoemul-
sion - Fig. 7, Table 11 (Refs. 27,72,86-88). D. V. Shirkov is mentioned,
There are 7 figures, 11 tables, and 91 references: 23 Soviet.
Card 3/3

J-
10 01
60
BOA
11,1. 0q e
o
01
60
fit
Sn e T gi er
e. 5 the
0'r Nib C.n "t,
in 0
oil 017n OCC)r C Oil
5
e On
t. 0 an V, e t~ lati ~
ty -re
ef
bc)-r 0 - t rgy ?) erSic
f an~ ell ab- e-ae. cr \I- . sent
e t 6e T eem T ir. e
of 1-11,o -onsiae ~AAC 0 -In N-1 P.
kjo joll 0
If ~,o 11 . ~ ) -~e . T t,)a, , . -
C, I
e
0j Se 5e ~e,
'pe-C -fos, CT 0 S in-'rea- -. In t'll'opn C:5 e
oil ct. "k ain,
oil 0 C. V -0
C, - - ter- dLoes yle"I'l Lo tt.
1,110 1 C.
least 0
. on ('71, k 1, C e I k
C),r nt 0 171 ti 0~ Yj(! 4.
e s
Ic "al
the t1le 'cal
0 v ~ lie , t
~or oq~-3 tb"
.A

The Real Part of the Amplitude of Elastic S/020/60/134/001/003/021
Scattering at Hi~,,h Enercies B019/BO60
,j E, and that the coefficients A, and B, in
slowly than the energ, (3) are
vanishing, On the basis of formulas (',,) and (6), the authors conclude
Prom an anal sis of data now available on pion-nucleon interection that
i Y
the coefficients Ao and Be in (3) should be likewise vanishinC, Values
are, however, given for Be that were calculated from experimental data
of the cross section for various energies (2 to 5 Bev). which differ
largely froui zero, These diverging results are discussed, and the
relation :F,2 = const/E2 is obtained for the contribution of non-
diffraQtion scattering to the elastic scattering cross section.
D+ = const-'-0.3'10-13 cm is given for the real part of the amplitude,
in connection with the measurement of the elastic pion-nucleon inter-
antion cross section at very small angles. the authors mention a paper
by P~ K, Markov et a!. (Ref. 5), and also papers by 1. Ya. Pomeranchuk
(Ref. 4) and S~ Z. Belenkiy (Ref. 6) are. referred to. They thank D, V~
Shirkov and Cb7hou Guan-chzhao fo- the-ir critical remarks, There are
0 references~ 5 Soviet and I US,
1,

~Phc' Real part
Scatte 01' the Amplitude 0' DIagric,
ring at Hig-11, Energ'
'-les S, 02016o1'134,10011003102,
-~SSOCIATIOI~. Ob"Yed ineny,. B019113060'
nstl- in tl-lt YUd,r,y he
'Ute of J"U'l Lar
I (joirit
PUSENTED: pr ! 1 1960, by
196o 01 an
2 r

BARASHENKOV, V.S.; MALITSEV, V.I.',.
[Generation of deuterons in the interaction of fast rucleons
with nuclei] Obrazovanie deitonov pri vzailr.-odeistvil bystrykh
nuhlonov s itidravii. Dubna, Obllvdinorri~,i in-t itidernykb issl.
10/61. 8 P~. (MIRA 15:1)
(Deuterons) (Nuclear reactions)

BARASHENKCV., V.S.; MJLNTSEVA~ V.ii.,, tekhn. red.
[Elastic interactions of particles at high energies] Uprugie
v2aimodeiotvila chastits pri bol'shikh energiiakh. Dubna,
Ob"edinermyi in-t iaderrWkh issl.~ 1961. 117 p.
(MIRA 15:3)
(Euclear reactions)

.2 r (jgz,
AUTH.`T~: V. S,
TITLE; Inelastic interactions between
review at the All-Union
Field Theory and the Theory of
Uzhgorod 1960)
17/6 1
i 3 2~ ,
B201
B
'--,J rh enerL_-.,; T,~,rtil c'"Ies 'A
Conference on the
Particles:
PERIODICAL: Fortschritte der Physik, v. 9, no. 1, 1()61. 29-41
TEXT; The author states that it ig only by the Jntroduction of 11-?w
,concepts that the traditional theory can be made to fit the results
obtained by means of accelerators both in the U,S. and the USSR. To be-il,

22070
G/01 7/61 /C)C)9/00 119C)111002
Inelas-i-- iLnteractions between, Bi 35./B201
1;('w" 'er. 111:trkod I y un:,zymmot ri c:al Vito menn-1 th~O colli:--iono
also In the absenoe of a statistical equ.il~brl 1111i The ti,eOrY
will gi-ve the experimental result only if one distin6A.,iLhe~-- betweon
ar.d. peripheral collisions following a suggestion by 1) 1 ~ B I ok h i n " s e
(Ref. 5; D I, Blokhintsev, V. S. Barashenkov, B MI Barbashov, Uspeklu
fiz., nauk, 66, 417 (1959)), According to measurements conducted at Dubna,
Dver 50 of the inelastic collisions must be peripheral ones. To obtain
t-he right angular distribution also for pN collisions one assumes in
accordance with I, E Tamm (Ref,. 7: 1, E. Tamm, The materials of the 9-th
annual Conference on High Energy Physics, Kiev 1959) that the nucleon wliclr
emits the peripheral meson passes into an excited isobaric state which, an
its turn. decays independently The following formula is derived for th~,
energy distribution of peripheral mesonsi
Card

G101 61/009/001/001/002
7
n ca t c o 'P,,? t,,-: e e n. B1 33YB201
)2 , fIV(p, + Et//j#-).
.1 P2 J, (p p) d p x
~2) p (lip
x - E
q'J, (qg) dq -
0
(1)2 21,Y 2fl2) v(q2 + 0/y2#2) q(ql p2) J,(q
P JO (P~)) dp - 0) dq
f f wq
0 0
2
Ferc, v(.- ) denoter, 'he form factor of the meson field source;
2 .2 2 2,2 2.
is the pion mass. q(q,~) is the number of mesons
the en.~,.
~i dist%nce from a fast nucleon. The recent measure-
men'r have nee essit of assuming a resonance (-17,7) inter-
Y
acticn. 11). In case of an annihilation of slow antinucleons,
mn 1 i f i ethe theory (Table III). The Dubra
r
i,heorles i-hat. ns-nume for the multiple

~ 2070
G/017/61/009/001/001/002
bet-.%,een ...
Inel B133/B201
-,roduct;on K r~lrticles to take nlace in a volume smaller than
Thai of the ot`.%~_,r -.),articles. Observations on cosmic rays with energies
0
confir:~,,o?~ "he necessity of taking peripheral interactions
into ,cccunt. I' vet to be decided upon whether a cascade interaction
-~es pl.-cc Lit ere-7.ies Bev between fast particles and atomic nuclei,
or a un4-fied cxciteO com,,)ound system is formed, which further decays into
-c I re are 7
-c-rate T-_rticlles. 'h.2 figures, 3 tables, and 25 references:
Soviet-bloc anC 16 non-Soviet-bloc. The 3 most recent references
to E'ns,lish-language publications read as follows: V. S. Barashenkov,
7. ;'.-alt--ev, E7. 1K. ;'..ihu1, Nuclear Phys. 15, 583 (1959);
`1 .S. Barashenkov, 1".uclear Phys. 15, 486 (1960); N. Horwitz, D. Mliller,
1. .'.'urray, R. Trf_'~-). Phys. Rev. 115, 47,2 (1.159)-
ASI_OCTATIO": --o4nt Institute of N'uclpar Res earch,Laboratory of
':!~_,oretical Physico, Diibna (Uss-)

17/61 1 2
B1 35/B201
AUTHOR: Barashenkov, V. S.
TITLE: Small-angle elastic scattering of high-energy prirticle5.
(A review at the All-Union Inter-university Conference on
the Field Theory and the Theory of Elementary Particles;
Uzhgorod,1060)
PERIODICAL: Fortschritte der Physik, v. 9, no. 1, 1961, 42-49
TEXT: (pp) scattering experiments conducted with 8-5 Bev at Dubna show,
for small angles, an elastic scattering cross section which is much larp_er
than would correspond to the optical model. Theoretically, this means
that the real Dart of the elastic scattering amplitude D(E) for 0
is different from zero. The behavior of D(E) is therefore theoretically
studied for energies E >1 Bev. In the dispersion relation, all such terms
as approach infinity faster than or like E are found to be vanishing. As
a result,
dE
+
Card 1/6
~.x

2: 2 ') 7 1
G/017/61/009/001/002/002
Small-angle elastic ... B133/B201
holds for the elastic scattering of nucleons. Here, D 0 D+(I),); Lk-iS the
pion mass; k E2 _ 2
P_; ;5� are the total cross sections for the inter-
action of charged Dions with protons. Similarly,
III I M_ dB (E)]
BA - DO - 2/! n2 ---
f k
0
I M f dE
+ 7~~, - - _(E) - ,(E)l 0, (3)
14 k
Af
follows for nucleon-nucleon scattering. Here, D� D�(M); Mi is the
-'F ~ , -
nucleon mass; k = Ei ~12; ~,+ are the total cross sections for (pp) and
(7p) interactions. These relations allow ~'� to be calculated in the
nonphysical region. The numerical calculation of Di has been performed
according to a program by I. Kukhtina at the Computer Center of the
Academy of Sciences, USSR, using a Strela computer. (Cf. Fig. 1). The
limit value of D+ for high energies is

,/Oli 7/6 1 /Ouq/ I/ ~`2
1 1 53/B201
dF
(J)U D"') _j f + a-
+ (4)
2
a fc)2!_o%-:s _froai the relation ~z+
for E ',a. D, for hi~~h
also becomes constant in case of scattering of nucleons or
antinucleons b,,T nucleons:
M
D, -11i dE E, a, (E) +(E)]
(Y~ DI) - - - -- __ T_
1) Al I. 2.zi J,
0
dE (E) + v- (E)] +
a follows frorn tl~e relaticn + for E--a. Since the (Iffl) cross
section i~i on: 'v kro-.%,n up to Bevt experiments are being conducted at
Du'-r.a and -.-,,i'uh 9.5 -and 6.15 Bev. The elastic (pp) cross section
has already been calculated (Cf. Fig. 4). The elastic scattering at high
encrFies can lh~~ analyzed Phenomenologically. Then, the scattering
11:nDlitUdO, (!(~VQl()P(_,d by begerd~r~,,~ TIOI~ynomlal_-,, reads:
Car~ 3/

L;)71
G/017/61/009/001/002/002
elaf~' 4
B133/B201
(21 1) 0 - e2i'l P, (Cos 0)
',herein are de termined experimentally. T~ Ile
c o.-.i. e.-:: r-ict ce e fi- c i e n t -,-(r) = n+ ik(r) i s connec ted wi t h by
d' (10)
This equvt4on `:-.r,~)rtant -for the interaction with nuclei, where '-f(r) is
known f"om olec':--n :-c--orinG. Mlore important for the interaction of
elementary ,),!rt4--.:er t':e inverse eauation
2 (1 rdr
d t)2 f I/r2
T hris boen also o.ntainod independently at the Budapest Physics Institute
_-.~o~ck.o- a n(~ -~ e;, tyan ' Rc. 0 :G. Domokos, A. Sebastyan, 2xplicit.
-7c!,."_ion of the in-.,c-sion -,-)blem in a phenomenological optical model

Small-an,--.
5/B20 1
(to be published". There are 5 figures and 12 ref erence~l: Foviet-blo.~,.
The 3 most recent reference,,,, to T~111~1.iCntions r(.~Id as
follows: D. I. Blokhintsev, V. S. Barashenkov, V. G. Crishirl C)V C)
Cimentoc?, 240 (1958); D. Ito, S. Minami, 11. Tanaka, 1,uovo Cimnento 20~
(1058': T. D. Snearman, 'The Dion-nucleon couplinC conniflint' DreTlrint
lo6o.
ASSOCIATION: Joint Institute of Nuclear Research, Laboratory of
Theoretical Physics, Dubna (USSR)
Legend to Fig. 4: Energy
dependence of the real part
of the elastic (pp) scattering
amDlitude D +M. Lab. system 13
T in Bev. D in units of 10 CM.
C is a constant.
Card 5/6

S/069/61/010/002/007/01 S
B1 02/13209
L
AUTdORS: Barashenkov, V. S., Mal'tsev, V. M., Mikhul, E. K.
TITLE: The mechanism of the interaction between fast nucleons and
nuclei
PERIODICALi Atomnaya energiya, v. 10, no. 2, 1961, 156-158
TEXT. At present, two diverging suppositions on the mechanism of interac-
tion between 9-Bev protons and nuclei are existing: a) Simultaneous interac-
tion with the entire nuclear matter "tube", b) intra-nuclear cascade inter-
action. In order to clarify which of the two suppositions gives a better
description of the experimental facts, the authors calculated the 9-Be~r
nucleon interaction according to the intra-,nuclear cascade theory and com-,
pared the results with experiments. Calculations were made after the Monte
Carlo method with relativistic three-dimensional kinematics, consideration
of the many-particle production in collisions between fast, particles and
I -,- -ml- --0_q-r elintvihii+.inn~ -i+~) vo~npnt fn

89357
The mechanism of the ...
S/089/61/010/002/007/018
B102/B209
Comparison between calculated and measured (Refs. 1,2) data is given
graphically and in tables. Fig. 1 shows the angular distribution of shower
particles for a) light and b) heavy nuclei; Fig. 2 shows the same for ca9r;ade
particles. Fig. 3 illustrates the energy distribution of the cascade parti--
cles (relative number of particles versus kinetic energy) for a) light and
b) heavy nuclei.
Table 1
Mean number of particles produced in one inelastic. nucleon-nucleon collision
Particle
shower
cascade
evaporated
Table 2
Card 2,6
light nuclei
theor. exp.
2.9 3.0'0.2
-4-
1.5 1,4-0~1
3.5 3.310.1
heavy nuclei
theor. exp.
4.1 ."0.3

4~0. +
4,,1-0~5
-0A)

S/Op' 61/010/002/007/01"
~-he mechanism of t),e ... :3102 200
7 an '-ine-ic enerEy of the particles produced in one inelastic collision
. e, fl- - I - -
'be'LI-.-,-een -oro'Uon and a mediual.-Yei--ht r)-oto-emu-'-sion nucleus in Ee%,)
Particle theor. exper.
shower protons 2-5 3.0 0-5
oho7,er pions 0.52 o.63+-O.l
--ascade protons 0-15 0.120-0.012
.cascade nions 0.048 0-040'0-003
The name sho-,%,er particles is applied to nucleons with 0-5 - 9 Bev and pions
with 0.08 - 8 Bev, the name caL-cade particles to nucleons of 0.03 - 0.0;
1~ev and Dicns of 0.15 - 0.08 Bev. Particles of lower energies are terme.1131
ilevLporatec"'. As may be seen, the results concerning shower and cascade
par'Licless a_rree -~,.-ith each other, also for evaporated particles -.:-ith black
tracks. Thus, the results of the Dresent investigations speak in favor of
the intra-nuclear cascade mechanism for the case of energies of 9 Bev and
less. There are 3 figures, 2 tables, and 6 references: 4 Soviet-bloc and
Card 3,6

S/08 61/010/002/007/018
The mechanism of the ... B102YI3209
non-Soviet-bloc.
3 3,:,'l T T'E DJU-1Y 14, 1960
50
0
30
c~y
2D
10
Car d 4j 6 0 t'. A
f,O 0,5 0,2 -0,2 -0,6 CasO

BkRASHENKOV, V.S.
I
International
involving verY
S 1(l.
conference on the theoretical aspects of phPnomena
high energie�. Atom. enerr. 11 no-3:26Z-264
(1-,IRA 14; 9)
(Nuclear research--Congresses)

BARASHMV, V..,5.
Interaction of '!/--mesons in the-Fermi statistical theory.
Zhur. eksp. i teor. fiz. 40 no.5:1313-1315 MY 161.
(MIRA 14:7)
1, Ob"yedinennyy institutsrdernykh issledovaniy.,
(Meson

BWSIM,NKOV, V.S.
Author's aorrections and supplementary remarks on the article" Cross
sections of the interaction of high energy particlesoll Uspofiz.nauk
'13
no.3-.589-590 Mr 161. (MIRA 14:6)
(Particlesp Elem:-4ntary)

BARASHENKOV, V. S.; KEYSER, G. Y.; OGREBA, A. A.
"Compton Effect on Nucleon, Nucleon Polarizability"
report pr:T-senLed at the Inti. Conference on Ifigh Energy Physics, Geneva,
4-11 july 1962
Joint Institute for Nuclear Research, Laborator'y of Theoretical Physics

LuroE7s :ecticns o~' antiri,,~,,-- i --o-uctic,nl
in. , I-It inul-A onov. ~ i"'I'l,-)
16: IC)

sloag 62/013/003/001/007
B102 B104
AUTHORS: Barashenkov, V. S., Malltsev, V. M.
TITLE: Particle production at very high energies
PERIODICAL: Atomnaya energiya, v. 13, no. 3, 1962, 221-227
TEXT; The numbers of particles produced in inelastic (NN) and (0)
collisions in the energy range 1-303 Bev were estimated, in connection with
the design of 10 and 100 Bev accelerators. The following conclu5ions were
reached with respect to the multiplicity of particle production in such
collisions: (1) the heavy-particle production probability amounts to
about 25','0 of the pion production probability. (2) 'Uhe'n the energy T.>1 BEV,
the total number of particles produced remains nearly constant whatever
the type of particles colliding with the target nucleons. The pions
produced in (pp) and (pn) collisicns decay partly in the immediate vicinity
of the target, giving gamma quanta (n 0, 'r,_'110- 16 sec), and partly at a
+ ' 1 -6
distance of 10-100 m, giving neutrinos and muons (T~ I T_ 0 sec): hence
the intensities of the y,V and g beams are studied as functions of the
energyand of distance from the target. (a) y-quanta. At high bombarding
Card 1/3

...
Particle production at very
S/08 62/013/003/001/007
B102 104
YI3
proton energies, the number of y-quanta of energy greater than a given
value K emitted at an angle 9 is
max (T) MU (T)
n dq (P,G,T) where is the 71
F(K,9,T) = 2 (T) i p
'q
momentum distribution and n- (T) = 2n P(0,9,flaingdg. For very
Y
0
energie's, the solid angle in which the quanta Lire emitted is very small
(GL-O'). (b) neutrinos. The total number of neutrinos having E >Y iS
given by the analogous expression
- -II
n (7)
17 (K; 0; L; T) = ' dq I 1 (1); 0; T) 1 - OX 11
b 7 68 1)
L7rrO is the distano;e from the target, 9 the angle measured from the
Card 2/3

S/06 62/013/003/001/CD7
11'article'production at very ... B102YB104
proton beam, b 1 - (P/111)2, it and m are the muon and pion mass,
T'
nV(T) - -n + (T) (T), and n-V (T) 2, S V(0,0, co,flsingdg. (c) muons.
R 0
The expression
(T) IL
.11 (K; 0; L; T) dq 11 (P; 0; T) 1 2-
(T) (T) A the mean number of muons produced per
is obtained, where n 4 +
inelastic (NN) collision. n (T) . 2n f M(0,Q,oo,T)sin9d0- In no casb was
0
the background intensity taken into account. There are 6 figures and
I table.
SUBMITTED: October 14s 1961
1
Card 3/3

holfj2
06/0' 8/02
326/0
BI oll 02

Ci
CnI.- 07
tic'05
par

of
tiy -60riy-
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1069
dth
cons V
9 3,~v -,)ro u calculat-ic;--s
-
I tfle
-action 0.
16 ~ I N,
'b
-,
,
crir.len
j)
y
,,
ro'~Ilced
j~s 14 and
L
. -7
Sa
,. r
0
nuclc
no
'
i
~,Ujsioyl
0 t o a:. ene
v
-and 0
dL"-Yc 1,
cc)r -ray
A
I,C
JIL'i
,
11 C -Le- 2
3
-
-
- 0'-- tho
-a
G a as ~ca
,
C.;
-~iclc- a ene
ol ac.-,
3,

0 c
l

O
a
-
tha
Tl &,.-;
r
,
-LO c r 1 ~
-t
cul -
0.5 3c T%- 0C ~1.
n
0.5r -
-Cemc
) -ascade
3
d coo
r
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S/056/62/'C42/001/0""4/048
B125,/E102
AUTHORS: Barashenkov, S., Blokhtnt,:ev, D. I., Wan~- Jun-,
HuanC-, Tsu-chan, 1111 0
TITLE: Inelastic high-enerry pion nucleon inturactions.
PERIODICALi Zhurnal eksperimentallnoy i teoreticheskoy fliziki, v. 42,
no. 1, 1962, 217-223
T EXT :The calculations of peripheral invla.,tic ii'll intaractions(ty'O types
of interactions) at E,,l Bev recently made in Dubria, in the rincle-meson
approximation were comoared ,,.,ith ey erimental rusuits- if *he number of
, ons produced (Dia&ram 0 Fig . 1 is even, tlien the pion prodiiction is
the main process in the peripheral collision which, odd number
(diacram D) is accompanied by the production of a sintJo pion in the
scattering of a virtual meson from a nucleon. It jr, sufficient to stidy
processes A and B whose inter&ction cro5s sections are

Inelastic hi~-h-enerLy pion nucleon
11~av n
(Y., (E) ~ g" g~
S/O 5 ' '62/042/001/01714/045
... B125/B102
�dq (2n)
(Q) K (Q)
4PQ
x In I + - )- - ) - - A
~P-q -p.qo -:-Ipq - (-'Poqo - IL2)2- 41,7q--
and P~a., n P n
(E) P"dP S) (S) jp~
Pow K(
I 1"+(Af+10*
(p) (2).
x (2.11,p, - All - RI +1L')2 - AP 2P.,
Mien calculatin& the sinele-rieson approximation the Cii1thors combired
all '17r-interactions in the upper nodes oil the di,,qrams A and B. T 1 -. e
r:itios of the cross sectionj for even and o+1 numbers of mesons at tl,~:
energies E 0 of the primary me*on are Civer in T,,!'ble 1. The core of
nucleon can be determined from. the type of the prodtiction of ,:r, o~"'
r of mesons at hiCh primary-particl~~ When usinp the
.,~-coliision cross section of 23 mb calc(ilateJ a %111-intcr`Oti~)n
-A r

S/0 "~ 62/0;1 2/C01/0 7-',/0-1 S
inela~Aic hi~rh-ener[;:; pion nucl,. 1,312~)YB102
constant 14-5 one obtoirs 40 mb for the cro.-s sect-ions of the
proce:;ces A and B. Tbe calculated values of the multiplicit~r of the
:)-frticIe,. produced and the anl-n,lar unI encr(;,,,r distributions of the recoil
nucleons are coinn.!red v:''Ii the experimental data. The peripherv-1
-inte-raction vdth sir.~Je-reson exchanLe proves to be the decisive
mechanism. The experimental data are not rE~liable rmd the contribution
Of procosses to the trunsfer of lnrtre momenta Y.hich miCht
be of imnortnnce, has hitherto not been stuaipul. The ,azthor6 thank
1'. N. Govorunj Kim Ze Pkhon, and F. Libl, collaborators of th'?
V-chislitellnyy tsentr (Coriputer Center) of the Joint institute of
(-Ie,.,r 1ese!irch for their help in U)e w::,iericA computat ions liz.; 11-slen
-ch'ar. for discassion,; of thr m t od!, of c-AculAint- ftc chart-e
liotribution in the statistical th'or~-. Th,,,)re arE- 7 fiirure2, '> tables,
an.-II 7 Soviet-bloc non-3ovief bloc. Th e three
- 11 referencer-
reference,7 to EnLlish-lanL:ua. e publications r'-LId Eli,.; follo%-,F: D. I.
Ann. Int.
Blo' hintsev. CERLIT Symposium II, 155~ 1~56; Proc. Of the 196C)
Con-f. on Hi-I-i FnerC-,,, Phys. at Rochester, Univ. of R3clhestcr, 1 ') "')CO
L. -Ro3bert'. Phys. Rev. Lett, 1, 50, 195"~-
4

Pior micloon
I k n o T; n yinstil
(United !.-.~Aitute of
SIT -3: iT ~,-:D . 2.1, , 1 )Ill
S/05~ 621 42/0 -~1/07,1/0
/ /0
. . . 1;125/B102
it ,,,:-idernylkh
Nucloar lie,~oaroh)
1 1 The mont importont Lypo.,; of 1110 A nild P 1 n inel "I"itic
PIC 1
-i//;,
--Q-7X

RARASHENKOV. V.S._; MIHUL, E.K.; HUANG TZE-'=
Gross section for str#ge particle gonerAtIon, Acta physica Pol 20
no.8:657-661 161.
1. Joint Institute for Nuclear Revearch, laboratory of Theoretical
Physics.. Dubna %&S.R.

-BARASHEN.KOV,-V.S.; MATLSEV, V.M!
Effective cross section for reaction (p,p'~I-I+). Acta phys'ica
Pol 22:Suppl.:173-178 062,
1. Joint Institute for Nuclear Research, Laboratory of Theo-
retical Physics, Dubna, U.S.S.R.

4i;
;.t 17~14-63, EW W/'DS: AFFTC/ASD
ACCESSION NR-. AP3005297 S/0056/63/045/002/0381/0383~
-i AUTHORS: Bc intsev, D. I.; Mikhul,
arhgj-ghfjgL0,V.j WSBl
Patera, I.-,-Sem-asnxo,. U. 10
TITLE: Momentum spectrum of ba ons in inelastic collisions betwee
fast pions and nucleons
SOURCE: Zhur. eksper. i 'teoret. fiz., v. 45, no. 2, 1963, 381-383;
Topic TAGS: baryon , momentum spectrum,pi.on-nucleon collision pion-
...pion collision , SIGMA hyperon , LAMBDA hyperon
ABSTRACT:, It is shown that the reason for the double peak observed
in the A and Z hyperon momentum spectrum in inelastic collisions be...:,
tween fast pions and nucleons at energies close to 10 BeV is a directj-----
consequence of the resonant interaction between the primary negative
pion and the intermediate particle that transmits the bulk of the
interaction in peripheral pion-nucleon collisions. Similar double
Card 1/2

L lrj214-63,
'ACCESSION NR: AP3005297~t
maxima in-the spectrum.of the recoil nucleons can be attributed to
resonance pion-pion interaction. Orig. art. has two figures.
ASSOCIATION: Ob"yedinenny*y institut yadernykh issledovaniy
:.(Joint Institute of Nuclear Res-e-a-=h)
SUBMITTED- 25Apr63 DATE ACQ: 06Sep63 ENCL: 00
SUB CODE: PH NO REF SOV: 003 OTHER: ~606~

BARASHENKOV) V.S.; BLOKIIINTSEVY D.I.; MIKIRIL, E.K. [Mihiil, F.]; PAn,'RA, I.;
SEMILSHKO, G.L.
Pulsed spectrum of baryons in inelastic collisions of fast pions
witb nucleons. Zhur. eksp. i teor. fiz. 45 no.2:381-383 Ag
163. (VaRA 1619)
1. Ob"yedinennyy institut yadernykh issledovaniy. 2. Sotrudnik
Instituta yadernoy fiziki v Bukhareste (for Mikhul).
(Baryons) (Mesons) (Collisioni (Nuclear physics))

MicASHMIKOV, V.6.; DEDYU, V.1.
[Testing of dispersion n1ations in the region of snall
angles and high energies) Proverka dispersionnykh sootno-
shenii v oblasti malykh uglov i bol'shikh energii. Dubna,
ObIledinennyi in-t iaderkvkh issledovanii, 1964. S p.
(MIRA 17:4)
1. Institut matematiki Moldavskoy Akaderaii nauk, Kishinev
(for Dedyu).

BAIUShENKOV, V.S.; MALITSEV, V.M.; PATEU, L!
[Inelastic particle interactions at high energies] Neu-
prugie vzaimodeistviia chastits pri bol'shikh energiiakh.
Dubna, OblledinenrWi in-t iadernykh ~Lssl., 10,64. 134 p.
(1,11RA 17:4)
1. Institut fiziki, Fraga (for Pallera).

B'~"R-lisilhl"KOVI V.33.; BOYl'J):~HIYl"'V, ~~.V.; YIJLYUKlIL4, L.A.; V.1~1.
- 1. 1 .
Casc:ado interact!Dns between part.4cles and nucleJ in thi- high--
er,p:-gy region. .:.tom. energ. 16 no.64515--527 Je 'W~.
( ! ', ~ lll;~ 17 - 7 )

.L 4462-66 E,VT~.1)/E'olT(m)/FCC/T/EiiA(ni )-2/EWA(h) G'N
ACC NR: AP5024620 SOURCE ODDE: U11/004f;/65/029/009/1631/1633
AU71JOR: Barashenkov, V.S. ; Yeliseyev, S.M.
ORG: Theoretical Physics Laboratory, Joint Institute for Nuclear Res alich (Laborator-
Iya nennogo instituta yadernykh issledovaniy)
q
TITLF: Dicoretical analysis of the interaction of elementnry pnrticles with atomic
nuclei in the 10-1000 BeV energy region /Report, A-1_l-,Uni.on Conference on Cosmic -Ray
Physics held at Apatity 24-31 August 1964/
SOURCE: ANSSSR. Izveqtiya. Serlyn fiziclieskaya, v. 29, no. 9, 1965, 1631-1633
TOPICTAGS: prip?,~!_ry -9--r-ay, secondnry cosmic ray, pi meson, high energy particle,
_qqsy!j
particle production, heavy particle.,
ABSTRACT: Production mitItiplicitirs and energy, angular, and transverse momentum dis-
tributions of shower particles produced in 27-35D0 BeV collisions of nucleons with
C12, A127, and Ga70 nuclei have been calculated, and the results are cnmpared with
cosmic ray observations. The development of the intranuclear cascades was calculated
by methods previously employed at accelerator energies by one of the present authors
(V.S.Barashenkov) and others (Nucl. Phys., 24, 642, 1961; 55, 79, 1964). The follow-
ing additional nssiniptions were employed in the calculations: 1) FO % of the secondar-
ies produced in each inelastic interaction with a nuclear nucleon are pions, and 20 %
are heavy particles; and 2) the multiplicity and the energy and angular distributions
C,,d 1/2

L 4462-66
ACC NRt AP5024620
of the secondaries depend only on the energy of the colliding particles and not on
the nature of the colliding particles or the secondaries. 7be inelastic scattering
was calculated with the optical model. Satisfactory agreement is shown with tile ex_
parimental data, Poor agreement with certain moro accurate angular distribution data 1
is ascribed in part to systematic energy errors in nuclear emulsion data and in part
to neglect of the exceptional role ol nascent nucleons in the elem-zntary act. A
qualitative explanation for the prevlously unexplained bimodality of the angular dis-
tribution of shower particles in the log tan 0 scale is found in the bimodality of the
angular distribution of the particles produced in elementary acts within the.nuclous.
Orig. art. has. 2 figures and 3 tables.
SUB ODDE; NPI SUBM DATE: 00/
ORTO REP, 006/ OTH REP, 007
15, q~
Card

BARAS111,A)KOV, V.S,
~~In characteristics of inelastic interactions at high energies.
Izv. AN SSSR. Ser. fiz. 29 no.9tl634-1639 S 165.
(MIRA 18:9)
1. Laboratoriya teoreticheskoy fiziki Ob"yedinennogo institute
yadernykh issledDvaniy.

BARALHENKOV, V.S.,N(ioktor fi-. - matemat. Ilauk
Successes in the physics of elementary Pr-roda "'/,
L - . - 11
t:.,
48-53 Ja 165. k I;rlll 28:2)
1. Obl'yedinennyy institut yadernykh issledovaniy, Dulma.