SCIENTIFIC ABSTRACT ZELDOVICH, YA.B. - ZELDOVICH, YA.B.

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• Collection: Scientific Abstracts
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• Release Decision: RIF
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• Document Creation Date: November 2, 2016
• Document Release Date: March 15, 2001
• Sequence Number: 12
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

r, L0 11(),'! Ye,
USSAINClear. Phyaler, NoiArIna ChArpe 21 Aug 53
"Neut'rina Charex, Of Fle~mmt-ary Particlet/Y Ya, B.
Zelldovich, Corr-Men, Acarl Sci USSR~'-Inst of Chem
.Phys, Acad Sci USSR
DAPI 68SR, Vol 91, No 0, n
.P
'Strongly believes. 1) Double beta-decay with the
-expulsion of 2 electrons but without emission of 2
.neutrinos does not occur, 2) The spectrum of
.positrons produced in decay of p* mesons does not
contradict the assumption that the 2 neutral
275T86
particles produced in this decay are identical and
obey the Pauli principled_ Decay of into e+
and,quanta withomt the,e:cpulsion of 2 neutral par-
ticies with spin 1/2 do.-S not occur. Discusses the
problem of whether still other charges exist that
areconserved as electrical, nuclear, and neutrino-
..0A___ __Bogolyubov
-like forms., Acknowledges -advice.ot.
V.,B. Berestektokiy, 1. Ye. Tammm, and L. P. Feoktiw-
stav. Presented 2 JVI 534
TTI

LI$M/Nitclear Physics - Beta decomposition
Oaxd I / I Publ 43 - 8/97
Authors t Zelldovich, Ya. B.
Title I Utilization of permissible beta -conversions for the determination of the
reaction which causes beta -decomposition
Poriodical v Im AN SSSR, Ser. fiz. 18/2, 243 -Z46, Mar -Apr 1954
Abstract I It la noted that thp beta -conversion of any jiuclous dopenda upon tho reaction
which causes beta -dec~..-nooiition, In order to explain the nature of the
Fermi rea(-tior) in ~)e*,:.L-d(:c-mposition (selection between the scalar S an-i
Vectorial %'), t~-e allth-;r !n~-atiured the correlalion between an elt-ctron and a
neutrino (photon) during the decomposition of NH and C[5 nuclei, where 75%
0! "t-, do, 170 tht- Fermi reaction and only 25% are due to
tensoriai r,,-a, o-ierren-_ -ap
found to be -.T-, *,ic- a5,- of beta -conversions of specular nuclei,
the states of which pr~cir and after the beta-conversions are distinguished by
the fact that the proton in the first is substituted by a neutron in the second.
Fifteen rcferonces- I USSR; 2 Dutch: I Swigs and 11 USA (1950-1953). Table.
Institution Academy of S~ iences USSR, Ins!itute of Chemical Physics
Submitted March 11, 1954

e Y'q
US-'R/Physics Neutrinos
Card 1/1 Pub. U8 - 1/8
_al~d -Si
Authors -,Zeltd ich Yai--R.4-Lak' nov 0 0~7 ij1r_-YaA
ov
Proy~ertie sm ~of a neutrino -aj~d double P~;,de composition
Usp. fiz. nauk 54/3, 361-404, Nov 1954
Abstract Exnerimental and theoretical studies of neutrino properties (indivisibility,
evenness spin and mass) are described. The reactions (n-4 p + a- L -Vand
P---)n ~ e4 + )) ) leading to the formation of neutrinos are analyzed in the lia4lit
of the quantum theory -rith aD-lication of Pauli's matrix transf orma t ions for
the Dirac equation describing the wave function (~4 -ilia probability of a doibb
P -deCOMr'05ition (simultaneous formation of'~'V) is theoretically establish
ad and experiments oerforr--d by various investigators with " he hee-In of inaly-
zero and the mithod of scintillations are described and analy7ed. Thirty-ninn
references 345,;h (1935-1954). Tables; graThs; diagrams.
Institution :
--Submitted :
'E
AO-Riv,

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m
I/ / . -,

USSR/physica
Card
US&R
Y&
Title About decomposition of charged 7 -mesons.
Perlodica `j D'oklo- AN- 88SRs- 970 U.- 3,,:421-m424, JuVi 1954
+ :Tro
Abstract t Analyzes JT -meson decomposition of a special typo, ia.,71 '?
which, under normal conditions, occurs very seldom (I in 2.10 cases),
but can be observed in a retarding block during work with an artificial
powerful beam of mamsonB, when a very characteristic picture of the above
mentioned type of decomposition can be seen, i. e. Y-Lo decompoTes into
2,~- -quanta w1th a-rx-t-ximate)y 65 Mev of enerKy per quantum; ., i~q Ftopp-
ed and extinguished giving, also 2j- -quanta with an energy of MPv
per quantum. *'fives a mathematical analysiq for the probability of the
type of decompoeitions discu5sed in the light of quantum mechanics. Four-
teen refereaces. Diagrams.
Institution i
too

zm IDOVICH, TiLkoy Borisovich; OMPANHMS, Aleksandr Solomonovich;
vuldvl"'w ~..' ~'a ~or; AIMMOT, B.N., takhnicbeskiy redaktor,
of datonation]'Toorlia detonatmil. Moskva, Gos.lxd-Yo
[Theory
takhniko-teoret.lit-ry, 1955. 2618 p. (HLRA 8:9)
(Uplooions)

-USSR/Ruclear-Physics-- Meson Field--
-~3348
FD
.Card 1/1 Pub~146-2o/28
Author : Gershteyn S. S. and Zeldovich 'la. B.
Title : Meson corrections in the theory of beta-decay (Letter to the editor)
Periodical Zhur. Eksp. i Teor. Fiz., 29, No 5, 698-699, 1955
Abstract A criticism of the article by R. J. Finkelstein and S. A. Moszkowski,
(Phys. Rev., 95, 1695, 1954) with p articular emphasis on that the
computation does not take under consideration the normalization of
the wave function of the nucleon nor the beta-transition of a mason.
Meson corrections are introduced by using the invariant theory of
perturbation with a pseudoscalar bond of the.,r-meson vith the nucleon.
Eight references, including 6 foreign.
Institution
Submitted june 8, 1955

n 7
-0 VA
0
0,
UM/ Us cellaneous Book review
--I
Card /1 .-Tubt.118 - 14/14
..".Axithors ze)Ao~jeh* Ya. B
Title : About the S, Larin report entitled, "Anomalous Beta-RaY Diffusion and the
Conglomeration Hypothesis of Elementaz7 Particles"
Periodical : Usp. fiz, nauk 55/4 12+7-U8, Jan 1955
Abstract : Critical review is presented of the S. larin report entitled, "Anomalous
Beta-Ray Diffusion and the Conglomeration Hypothesis of El3rwntary Parti-
cles". The statement by Larin that charged particles with a mass exceeding
the masz3 of an electron e:,~st in beta-radiation 13 corrected and it is
pointed out that such particles should origimte during the absorption of
rigid ga--%a quinta iraterill-is hawin,- higher atomic. number, analogous to
the formation -f Pleclron-p-)si'ron p-Ors. Two LUSH refererces (1954).
Institution ........
-.-Submitted

GANDELIKAH, G.M.;. ZELIDOVICH, Ya.B.
Determination of th e limit of applicability of quantum electrodyna-
mics by measuring the magnetic moment of electrons. Dokl.AM SSSR
105 no.3:445-447 N 155. (MLRA 9:3)
1. Chlon-korresponde ut AN SSSR (for Zeltdovich); 2. Institut'
khimicheskoy fiziki Akademii nauk SSSR.
(Electrons) (Qaantum theory)

6.
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USSR/AcouBtics Sound Vibrations and Waves, J-2
Abst LTournal: Referat Zhur - Fizika., No 12,. 1956, 35547
Author: Zelldevich, Ya. B.
Institutions None
Title: Motion of Gas Under the Influence of Short-Duration Pressure
Original
Periodicals Akust. zh.,, 1956,-2, No 1, 208-308
Abstract: Analysis of the propagation of a.plane shock wave and the motion
beyond the wave front.9 occurring in a gas -under the influence of a
strong short-duration external pressure. A determination is made
of the law of attenuation of the wave and of the distribution of
pressure, density, and velocity that should prevail after the
pressure is removed, or in the limit, that should be arrived at
asymptotically after a time that is large compared with the dura-
tion of the external pressure. The solution obtained is self-
modelling and is characterized b5ftpower-i-function dependence of
Card 1/0

USSR/Acoustics - Sound Vibrations and Waves, J-2
Abet Journalt Referat Zhur Fizika, No j2, 1956, 35547
Abstract: the amplitude of the wave on the time and on the path passed by
the wave; however) unlike the analogous problem of explosion,
the exponent in obtained not from dimennionallty conBlderations)
but by integrating the ordinary differential equations. An
analysis is made of the unique situation pertaining to the equa-
tions of consenpation of momentum and energy in the aaymptotic
solution,, and also of the problem of the conditions under which
such motion can be practically realized.
Card 2/2

ZrL' D13VIC 11
I , yd,
SUBJECT USSR / PHYSICS CARD 1 2 PA 1414
-AUTHOR ZELIDOVI6,JA.B.
TITLE On the Decay and the Mass Difference of Heavy Neutral Mesons.
C~PERIODICAL gurn;eksp.i teor.fis, LO, fase.6; 1168-1169 (1956)
Issu d: 8 / 1956 reviewed: 1 / 1956
,,In a certain distance from the place of the production of Q-p~Lrticles the
linear combination of 9 s and 9a contains not only 9 but also Q. Here
es = (Q + i)/ r2 and 9 a = (9 - Q_)/ 2. The quantity of G-particles changes with
distance like a damped sinus function the period of which depends on the dif-
ference of the masses 9. and Ga-
The present work ohows an analogous periodicity for the decay 0---) IA+ n +
and studies the problem of the order of magnitude of the mass difference of 9.
and Ga. The interaction constants g, and g. causing the docay.of 9 in
+n- Y' and in /0--n+ Y' respectively need not be equal. The decay of 0 in
+ is characterized by g, and respectively. In a bundle of 9-particles,
and g2
which is to be considered as a mixture of 9 and 0 the ratio of the probabil-
+
ity of a decay with production of /4 and 1.4 fluctuates as a function of the
ratio of the amplitudes and the phase3 of 0 3 and 9 a. The number of /14 � -mesons
changes in the course of time like
ims-W -92)exp('ma-wa) t 12. Here ms and m denote the
(91+g2) exp( S)t + (91 a

SUBJECT USSR PHYSICS CARD 1 2 PA 1461
AUTHOR ZELfDOVIC,JA.B.
TITLE The Magnetic Field in a Conductive Turbulent Liquid in the Case of
Twodimerisional Motion.---
PERIODICAL furn 'eke* t'oor.fis,31# faso.
154-155 (1956)
Issuedt'. 9 1956' -reviewodi ~11 1956
Here the special case of'a twodimenional:moti6n is.inves'tigatod, in which
vz.O as well as v ~andv depend only on x and y. The liquid is assumed to be
x y
incompressible, (div 0). In this.case the problem can be solved rigorously.
In accordance with the example set,by G.KoBATCHELOR, Proo.Roy.Boo.201 Al 405
(1950) the equations are set.up in quasistationary approximation and with the
neglect of the shifting current and the density of the free charges. Here
c - I in the HEAVISIDE system (without 4R), ? - scalar potential, -1 - vector po-
tential, 4iv1- Ot current, div. 3->. 0, r - 4;pecific resistance of t4e
4
liquid. The equations are: ri R~vHj; H - curl; E= (aA/a t) - Vq: i - curl AL
From this system there follows aA/8t)+[# curll]- r AA + V (p. To this equation
the operation curl is applied after which follows the case of the twodimensional
motion of the~inoompressible.liquid. On this occasion'the following equation,
which-corresponds exactly to the heat conduotionequation in a moved liquid:
/a t+v (aH /ax)+v (aH lay) - dH /dt n r H is derived.
z I I x z y z , - z z
If exteri6r*fields'are-lacking H.bec omes smaller. If H is a maximum in any par-
tiIale (?, or domain?) themaximum is-'flattened. z
------- - -------

4UTHOR:
TITLE:
PERIODICAM
ZELIDOVIC,JA.B. PA - 2028
The Perturbation Theory for the Onedimensional Problem of
Quantum Mechanics and the Method developed By LAGRANGE.
Zhurnal Eksperimentallnoi i Tooret.Fiziki, 1956, Vol 31, Nr 6,
pp 1101-1103 0-0-8-R-)
Received: I / 1957 Reviewed; 3 / 1957
ABSTRACT: In the present report,the required regular solution is ruprouen-
ted in the form of the sum of two solutions (a regular and a non-
Yorlar one) of the unperturbed 5roblem with variable coefficients:
Ta r) . 0a(r)T0a(z-) + ob(r )90( r , Such a representation is univo-
cal, and for the coefficients aimplo oqutttione are obtained thanks
to the application of an additional LAGRA1101; condition
(~O'a~oa"biOb with i = dtp/dr. All functions, among them also
aa(T) and cb(r) depend only on the one independent variable r. The
method suggested here furnishes the known expressions for the
modification of energy in the discrete spectrum (in first approxi-
mation) and for the.modification of the phase of scattering in
the continuous spectrum. The method furnishes most illustrative
expressions for the modification of the wave function itself re-
sultirg from tv-he perturbation. In the discrete spectrum an inter-
.esting expression for the modification. of energy (in second approx-
Card 113

PA - 2028
The Perturbation Theory for the Onedimensional Problem of
Quantum 11echanios and the Method developed by LAGRANGE.
imation) is besides obtained in form of a double integral.
Here the spherically symmetric problem of the quantum mechanics
of a particle is investigated. After separation of the angle
variable and after introductIon of 7 - r? (where T denotes the
wave function) the problem of the determination of the value of
the angular momentum 1 is reduced to an equation taking the form:
_~t 2/2m)~ + V(r)y - ET - (H - E)y - 0. Besides the potential
V r) here includes also the centrifugal potential
21(1+1)/2mr 2. The equation of second order has two linearly
independent solutions: one of them can be chosen in such a manner
that in the case of small r the regular solution ?.- r 1+1
applies. The1second solution Tb behaves in the case of small r
like ?b - r- , The second solution actually satisfies the equation
everywhere except in the case of r - 0. Therefore the solution of
every (?) physical problem satisfies a regularity oonditiont i.e.
the solution is built up from regular functions of tho type Ta'
Card 2/3

PA - 2028
The Perturbation Theory for the Onedimensional.Problem of
lethod developed by LAGWGE
Quantum Mechanics and the L
In the perturbation theory a.solution of the type 9 a Is to be
found for the potential V(r) on the condition that
V(r) - V 0(r) + v(r) applies (where v(r),is small) and that the
equation for V 0(r) is solved.
At first the case of the continuous spectrum is investigated.
The corresponding expressions for 6 a and ;b can be found ale-
mentarily and are here written down. Also the integral ex-
pressions for a a and cb are given. In conclusion the discrete
spectrum is discussed in short.
ASSOCIATION: Institute for Chemical Physics of the Academy of Science in the
USSR.
PRESENTED BY.,
SUBMITTED:
AVAILABLE: Library of Congress
Card 313

vo V i C t+,
SUAJECT USSR / PFSICS CLRD I / 2 PA - 1451
,kUTHOR ZEL#DOVICtJA.B.
TITLE The Development of the Thoory of Anti-Particles, the Charges of
Elementary Particles, and the Proportion of Heavy Neutral Mesons.
PERIODICAL Usp.fis.nauk, a, fasc-3, 377-398 (1956)
Issued: 9 / 1956 reviewed: 11 / 1956
Particles and anti-particles: At first DIRAWS theory and the hole-theory are
discussed. With the discovery of the positron the total symmetry between par-
ticles and anti-particles became apparent. However, the world by which we are
surrounded, is not explicitly charge-symmetrical (immense numbers of electrons,
but positrons exist only on certain special conditions). However, this apparent
charge symmetry is due only to the asymmetry of initial conditions, for in the
vacuum electrons and positrons are equally stable. Next, the theory developed
by PAULI and 17EISSKOPF and its applicability to positive and negative pions is
demonstrated. The "conceptions back ground" and "holes" are described as con-
fusing and obsolete. The formulae of the present theory (second quantization)
are explained without resortin
g to mathematical reasoning. Next, the discovery
of the antiproton by the SEGRE group with the 6 BeV-accelerator and the impor-
tance of the nO-decay for the theory of the antiproton are dealt with. According
to the author's opinion the experimental discovery of the neutron is now about
to follow.
The nuclear and the neutrino charge as well as the theorem of the enuivalence
of mass and energy: To each elementary particle a nuclear charg+s ascribed

Usp.fis.nauk, fasc-3, 377-398 (1956) CARD 2 2 PA - 1451
'uniquely. The conservation of the nuclear charge is in direct connection with
the problem of the equivalent of mass and energy. The main difference between
proton and antiproton, neutron and antineutron is characterized by the sir,,n of
the nuclear charge and not by the sign of the electric charge. Several strict
rules of selection are pointed out. The theories developed by DIRAC and
MAJORANI for the difference between neutrino and antineutrino are discussed.
Though the existence of a neutrino charge is probable, further experimental
proves are necessary.
The strange particles: Here only the known facts concerning the neutral hy-peron
AO and the neutral meson 9 0 are discussed. The excited state of the nucleons
is mentioned and so is the inner connection between the slow decay of A - and 9 -
particles. The inner difference between n! and no, 9 and 0 is demonstrated on
the basis of the polarization of the vacuum caused by these particles. In con-
clusion the particular features of 0-mesons, above all the mass difference of
les = (0 + i) / r2 and 9a = (9 Y2 are discussed.
INSTITUTION;

ZZLIDOTICH, Ya.B.
Artificial flash in the upper atmosphere (from *Scientific Azeri-
can,P V.194, no-5, 1956). Usp.fiz.nank 60 no.1:161-162 5 156.
(Nitrogen oxides) (Ionosphere)

own
S'a'-sm"OV, II.-a. sl nt'-SIEL, B - K'- TL,
A.
Some corisideratiOl"S, 011 the oPeration 0
ofiligh current linear accelerators.
jigf Znprgy Accelerators and Pic"
Cf!,,n11-Syrq)osium on
physics.
Geneva 11-23 June 56
in Branch 0

ZIA
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BERM
14.
ZE,LIDOVIM# Ya. B. and F_OGMO_
Investigati4= of- spbarical Detorl*tlcn Of C,"ea
-An Expertmental . uof 8, 1957 , pp. j6p4_1713 12 refs
sov. PhyS Tech FnYs
TrMs'lation. Them-etical and experimentftl results vith discuBsion of
testing equipment and. aj)PlicclitiOns-

po
V~"M' ,
A-- - I - ry Particies C-3
rtUMAMA/Njwlear PhYsics - FAlementa
rizim~ No 2V 1958., NO 2649
Abs Jour Ref Zhur
Author
Inst Ot 61 ti-p rticles Charges of
vejolment of the Theory Of An a
TLtle De Neutral Mesons
proper,,,-ies of Heavy
F,jementarY Particles and,
_Sov. Ser, mat.-fiz.p 1957., ll,,,No 2o 52-71
Orig Pub Art. Rom.
passian. See Refe'at Zhur Fizika: 1957s
Abstract I. Translation from the
No 3~, 5861
C/-)/
AUTHORt BARENBLATTt,G.I.,ZEL!,DOVICH, Ya.B. (110scow) 40-5-18/20
TITLEt On Solutions of Dipole Type in the Problem of the Nonsteady

Filtering of Gases in
-the Polytropic Regime (0 reshonii tipa
dipolya v zadachakh nestatsionarnoy filltratsii gaza pri poli-
tropicheskom re zhime)
PERIODICALs Prikladnaya lfat~. i b1ekh._,1957,Vol_.21,Nr 5,P-P;718-720 (USSR)
ABSTRACT: For.the nonsteady filtering of gases in the polytropic;iegime
there-holds for the pressure of the gas a differential equation
which, under certain indications on the initial distribution
of the pressure, is equivalent to an integral equation. By this
integral equation the law of the conservation of the dipole is
expressed, If now, besides of the initial distribution of the
pressure at the time t - 0 , the prd'ssure is still proscribed
at one point for all timost then from the integral equation a
general.Antegral relation can be dorived which gives valuable
informations on the pressure distribution for arbitrary times.
That range can be determined -ahere the pressure distribution
is disturbedt and the boundaries of this range can be explicit-
Ily calculated. The obtained solution is of interest particu-
larlyas an asymptotic representation of the pressure distri-
bution. An analogy of the given solution interesting for many
Cardri/2 cases can be obtained for the case of axial-symmetric pressure

.on.'-Solutions of Dipole Type in the Problem of the Nonsteady 40-5-18/20
Piltering of Gases in the Polytropic Regime
distributionq
There are,no figurest no tables, and 2 Slavic references.
ASSOCIkION: Ifttittit'nefti AN, SSSR (Petrole= lastitute'AS USSR)
A4ust 20, 1951
AVAILABLE: Library of Congress
Card 2/2

AUTHOR: Barenblatt, G.I. and Zeltdovich YaPB (Moscow) 40-21-6-17/18
TITLEt On the Stability of Flame Propagation (0b ustoychivosti
rasprostraneniya plameni)
PERIODICAL: Prikladnaya Matematika i Mekhanikaj 19579 Vol 21,_Nr 6
pp 856 859 ~Ussn)
ABSTRACTs The determination of the stability of flame propagation leads
mathematically to the investigation of the stability of ata-
tionary soluticna of the general kinetic reaction equation of
diffusion and heat conduction. Such investigations were
carried out by different authors. Considering the one-dimen-
sional flame propagation Rosen [Ref 11] obtained the result
that instabilities of flame propagation are possible and he
gave approximation criteria for the stability. The authors
show that Rosen's deductions are based on incorrect suppo-
sitions, and that the problem of the stability of flame pro-
pagation was incorrectly solved* In the present paper the
stability of flame propagation is investigated under the same
suppositions and it is shown, that in the one-dimensional case
alwaya exioto Btability. This result is valid for the pure
heat propagation of flio flamo an woll an for iaothermalf ohai~-.-
Card 1/2

On the Stability of Flame Propagation 40-21-6-17/18
shaped flame propagations. There are 2 figures and 12 refe-
rences, 7 of which are Soviett 4American, and 1 Englisn.
ASSOCIMION: Thatitut nefti.AN SSSR (Petroleum Institute,, AN USSR)
SUEHITTED:- XWst 1., 1957
AVAILAM: Library of Congress
1. Flame propagation-Stability
Card 2/2

EL-~ J>OV I'c_P
AUTHORs ZEWDOVICH~TA.B., SAKaROV,A.D# 56-4-51/52
TITLEi On o a-a-RUM Caused by Myons in Hydrogen.
(0 reaktsiyakh, vyzyvayemykh myonami v vodorode, Russian)
PERIODICALs Zhurnal Eksperim. i Teoret. Fiziki, 1957P Vol 32t Or 4t
Pp 947 948 (U.15~-StRO)
ABSTRA.CT: If a myon exiStat the Ahape.of the potential barrierp by,which a
nuclear reaction of slow p- and-D nucloone in prevented, ohanges.
Penetrability of the barrier th increases and the following re-
3
91 D + D - HO + n, D + D - T + p.
actions are possiblet p + D,. H:
If tritium exists~ also the following reactions are possible:
~ ~D + T He4 + n, T + T He4 + 2n, p + t - He4. Experimental data
obtained by L*W.ALVAREZ at &I. (lithographic manusoripto
December 1956) show the following results In natural hydrogen, an
average of one act p + D . W corresponds to 150 mesons, in
hydrogen with D-content, 1000 and 1t20 correspond to 40 and 33
mesons respectively. The energy,of the creation of He3(5s4 Rev)
is taken along by the myon,,so that monochromatic myons are ob-
served 'on the occasion of the reaotion. The relatively high
probability of reaction,in the natural mixture is explained by the
transition of the meson from hydrogen to the deuteron. The authors
here give a rough evaluation of the.transition probability. Next,
the nuclear reaction in the molecule pD~- is discusoed and the
Card 1/2
-----------

)evl,c 14
15 L
AUTHOR ZELI VIGH A.B. 56-5-23/55
TITLE Shock W es W1 Large Amplitude In Air.
(Udarnyr volny bollshoy amplitudy y.yoxdukhe.-
Russian)
PERIODICAL -Zhurnal Eksperim. I Teoret. Fisiki 1957, Vol 32, 1fr 5v
pp 1126-1135 . r
ABSTRACT The paper under review investigates the state of air
that in compressed by a strong shock wavot while taking
into account both dissociation and Ionization. In
atrong shook waves there takeplaoe at high temperature
new 2DZ&ioal -phenomena, namely dissociation, ionization
and emission of light..In this context, the paper under
review disocusses the effects of.these phenomena upon
the properties of.the air that in strongly compressed
bythe,shook wave, Ad also upon the structure of the
shook wave. Briefreearence*.is made to some relevant
prey-ioualy- -publishe d.. papers i,
Dia&ocIa:tia&.aad.,ionizatijqu in the shook wave: It
200-600 atmospheres the temperature in the shock wave
'
ris44 to 5060"L I
0.000 degrees centigrade and a strong
dissociation of the oxygen molecules and-of the nitro-
gen molecules take* *as. The air becomeW a monoatomic
CARD 1/3 eas. If the pressure is increased further, the (constant)

fo"t-' - 5 - 23/ 5 5
CABD 2/3 --
Shook Wavea with Large Amplitude in Air.
dissociation energy playa a l*xser and lesdar rdle.
But already before the dissociation is terminated
a noticeable dissociation of the atoms taken plaos.
In th 'e range that is of interest to ual saxely T bet-
ween:l'au4 100 eVj a tenfold compression 13 achieved
in the shook cave. Then we have# Yery roughlyp for t ~e
velocity D of the shook wave (in am/seop p in dyn/cm
and for the temperature in eV D - 28 Yp and T
1-0-6.75p3/4, respectively, At a pressure of " 40-10
the temperature of qOO eT is attained, and then the
temperature increases linearly with increase in pres-
sure#
Emission by the shook wave: A result of the ionization
ot the gas continuous spectra of absorption and emis-
sion of light occur. The compressed air becomes nontraus-
parent sad radiat.9a ix a sufficiently thick layer an a
black Body, The compression performance in compared
.to the energy of radiation.
e nect chapter of the P!~Rer ander-rayfew deals with the
structure'of the wave while taking into account the
radiation. If we take into consideration the greit dif-
ference in masses between electrons Lud.ions,
.
' 5

Shook Waves with Laree Amplitude in Air. 56-5-25/55
strange effects take place in strorg shook waves with
strong ionization. The last chapter of the present paper
discusses in detail the rigorous theory of the structure
of the wave, while taking into account the radiation;
(6 reproductions).,
ASSOCIATION: Institute for Chemical Physics, Academy of Sciences of
the USSR.
PRSSMTED BY: -
SUBMITTED: 10.6. 1956.
AVAILABLE: Library of aongross.
CARD 3/3

10
USSRIK -pe, V/~
tomic and-Molecular s Cs Gases D-7
Abs Jour Ref Zhur FiZika, NO 1, 1958, 802
Author Zelldovich, Ya.B."
Inst. Physics Institute, Academy of Sciences,~_USSR.
Title Investigation ofthe Equation of State with the Aid of
Mechanical Measurements..
Grig Pub Zh. eksperim. i teor. fiziki, 19571 32, No 6. 1577-1578
Abstract The-author considers the possibility of obtaining the ther-
.modynamic characteristics of a substance at high pressures
by means of explosions. Here it is taken into account that
in principle'it is.
-- possible experimentally to determine the
the enerew 9 -E.(p,v)-(p is the treasure and v the speci-
fic Volume). It.is shovn~that.knowledge of E (P,V-) leads
directly to.the adiabatic equation
Card 1/2
Card 2/2

Possibility of effective meson cat4lypin of nuclear reactions.
Zhur. eksp. i teor. fiz. 33 n1.1:310-111 JI 157. (MM 10:9)
I& Fizicheakiy institut im, P,N, losbedeva Akademii nawk SSSR.
(N~Uclear reactions) -(Mesons)

`7 - r - C z
,?5L Do k"'I H,
]W7
AUTaOR: 56-3-22/59
TITLE: Cylindrical Acoustic Waves: Automodel Solutions. (Tailindri-
oheakiye avtomodel'nyye akusticheakiye volny)
PERIODICAL: Zhurnal Eksperim, i Teoret* Fiziki, 19579 Vol- 33, Nr 3,
PP- 700-705 (UBSR) -
ABSTRACT: Theoretical sets of solutions of a cylindrical motion with
acoustic approximation are giV,en which depend only on one para-
meter. The sets of solutions &To formed by means of superposition
of plane waves and can be solved alementarily,,by means of quadra-
tures. Results were obtained for a motion with finite presoure-drop
at the front of an arriving cylindrical wave which coincide with
the results of Zababakhin and Nechayev. Above all the pressure of
the reflected wave is proved to tend to infinite also with finite
distance from the wave center. The maximal pressure is discussed
with taking into account the deviation from the acoustic approxi-
mation solution in -the case of great wave amplitudes.
The solution is carried out stepwise as follows:
1) General-solution of the cylindrical problem.
2) Solution of model representation.
3) selection of exponents from initial conditions.
4) Reflexion of "leaving" wave.
Card 1/2

56-3-58/59

AUTHOR3 Zelldovichp Ya.B.
TITLE: A Variety of the Theory of Hyporona (Variant teorii giperonov)
PERIODICAL: Zhurnal Eksperim. i Teoret. Fiziki, 1957, Vol, 33, Nr 3 (9),
pp. 829 - 831 (USSR) (Letter to the Editor)
ABSTRACT: As a basis the author hers uses the model proposed by M. Gold-
haber (Phys. Rev. , 1956, Vol. 101, p. 431) and G.D'yerdi
(Zhurnal tks'perim. i Teoret. Fiziki, 1957, Vol. 32, p. 152)
which considers hyperons to be composed particles. Accordingly,
the hyperons consist of nucleons and K-mesons and the forces
connecting these particles depend upon the isotopic spin. For
some of the assumptions given here this model leads to the
following relation between the masses of the nucleon (N) and
the hyperon a A 2 , r--' , 2 M, + 2Mjj - 3MA . + M
j ~; . Thi s
L
__
relation is satisfied better than the relation found by Gell-
Manns 2MP_" +2MN - MA + 3Msr . The model investigated here
also leacra to conolusione concerning hyperons with the strange.
ness -3 and, together with the modulus, to even greater strange-
ness. For hyperons with the strangeness 3 - -1 9 - MN + '~K +
.Card, 1116 + c + a(tN Y = MN + b + a(t.t.) is proposed. Here a, b, c de-

56-3-58/59
A Variety of the Theory of Hyperons
note constants' and the brackets.denote the scalar product of
the isotopic spin of the particles mentioned. a = 152Y5;
b - 459,5; c - -506 is found. (The mass of the electrons is
t
+ 2b + a(t
put equal to 1). M . M
)
is true for the hyper-
2k
N
H
ons Ytith the strangeness S - -2, where the constanst a, b are
the same as in the previous formula. The following is here
assumeds The L~,'.ersction of the K-particles among one another
is weak compared to the interaction of the K-particles with
the nucleon. Both W-Particlee in a hyperon with S_= -2 are
in the same state, i.e. in the same state as the K-particle
with 8 - -1. In this scheme two charge multiplets with S - -2
are possible, namely t - 1/2 and t - 3/2. The threshold values
of the production of hyperons in dependence upon strangeness
are given in a table. The conceptions devebped here are accu-
rate only if the spatial spin of all hyperons is equal to 1/2.
Further, the hyperons in a system in which all nucleons and
X-mesons are assumed to be even, have to be even. There are I
table and 6 references, 2 of which are Slavic.
Card 2/0 S 61_~_,

AUTHOR: Zelldovich Ya. B., 56-4-24/54
TITLE: -6n Nuclear Reactions in Super-Dense Cold Hydrogen (0 yadernykh
reaktsiyakh v sverkhplotnom kholodnom vodorode)
PERIODICAL: Zhurnal. Eksperim. i Teoret. Fiziki, 1957, Vol. 33, Nr 4, pp. 991-
-993, (USSR)
ABSTRACT: It is shown that nuclear reactions which take place below the tres-
hold value in cold hydrogen at defisity values of 104-106 9/cm3
should be observable with a probability sufficiently high even for
astrophysical standars. This fact furnishes the limit for the pos-
sible compression of cold hydrogen, since at a density of 0,7.lo5
9/cm3 a celestial body cannot live longer than loe a. Such a den-
sity, however, can only be obtained in cold hydrogen under the in-
fluence of the gravitation of a mass which comes near to that of
the sun. The reactions p+Dt p+T, D+D, D+T can also take place in
a cold way. They require a small pressure which, however, is still
much too high for the conditions onthe earth and will most proba-
bly never be practically obtained. There are 1 table and 3 Slavic
references.
SUBMITTED: April 29, 1957
AVAILABLE: Library of Congress
Card 1/1

.7_EL'D0V1&#, Y,, 91
56-6-26/47
AUTHOR: Zelldovich, Ya. B.
-------------
TITLE: The Relation Between theAsymmetry of Decay and the Dipole Moment
of Elementary Particles (Sootnosheniye mezhdu asimmtriyey raspada
i dipollnym momentom elementarnykh chastits)
PERIODICAL: Zhurnal Eksperimentallnoy i Teoretichaskoy Fiziki, 1957, Vol. 33,
Nr 6, pp. 1488 - 1496 (USSR)
ABSTRAM The following chapters were dealt withs
1.) Asymmetry of a real and virtual decay in a non-relatividic mo-
del.
2:~ On "odd" molecules.
3 Description of the formation.particles in the coordinate space.
For the emission of the non-relativistic partioles a simple model
representation is used, and the wave funtion of a system in co-
ordinate representation is set up both for the real and for vir-
tual decay* It in shown that the aoymmetry of the real decay of a
polarized particle deponda upon tho imaginary part of the binding
gradient, whereas the asymmetry of virtual decay and tho dipole
moment depend on the real part of thiv constant.
It lo further proved that the elenentary particles, which, accord-
Card 1/2 ing to Landau, have no dipole moment, are similar to the optically

56-6-26/47
.The Relation Between the Asymmetry of" Decay and the Dipole Homent of Elementary
Particles
active molecules of organic chemistry, but not to tho molecules
in the double-A -state.
A simple system of equations i8set up for the probability of vir-
tual decay. There are 8 references, 4 of which are Slavic.
SUBMITTED: July 1, 1957
AVAILABLE: Library of Congress
Card 2/2

AUTHOR: Zelldovich, Ya.B. 56-6-44/47

TITLE: The Electromagnetic Interaction Connected with the Non-
conservation of Parity (Blektromagnitnoye vzaimodeystviye pri
narushenii chotnosti)
PERIODICAL., 4hurzal Eksperimentallnoy i Teoreticheskoy Fiziki, 1957,
Vol* 33, Nr 6(12), pp. 1531-1533 (USSR)
KBSTRACT: lip to th6 -discovbty of the nonconservation of parity it was
assumed that the interaction of an elementary particle with
spin 1/2 with a weak electromagnetic field is fully described
by the following 3 terms: q?, a div Oaf. Here
denotes spin, q the charge, p the magnetic moment. The constant
a characterizes the field of a."spherical condenser" which is
outside equal to zero$ but enters into interaction with a charge
Y inside the condenser. In the well-known work by Li (Lee)
and Yang concerning the nonconservation of parity the possibility
of an electric dipole moment, i.e. the interaction dCM is point-
ed out. Iff however, with the nonconservation of parity the in-
variance with respect tothe combined inversion (and consequent-
ly also with respect to the reversing of time) is conserved, a
Card 1/4 dipole moment is impossible according to Landau (reference 3),

The Electromagnetic Interaction Connected with the Jon,3onsorvation 56-6-44/47
of Parity.
for with a reversal of time Cr changes its sign, but E does not.
The question however arises as to what electromagnetic inter-
actions, which are allowed in the conservation of parity, become
poooiblo in tho theory of combined inversion? The interaction
('67) is not permitted aooordin to g-auge invariance, and
b(844 - b(? rot -A) - (4rb/c)(M. Here 'I -w p? dono 4# the
donnity of the current inducing the magnetic field i. With the
conservation of pArity this torm would be pseudoscalar (a -
paeudovectort T - veotor), 4nd it ould not be introduced into
the expression for energy. On the other handt"S and T ehanga
their signs inthe case of time inversion. The moment of force
corresponding to such an interaction energy amounts tolz -
- (40/o) [8"3]. Such an interaction is obtained immediately
from the model of the virtual decay of the investigated particle
A with the spin 1/2 into a particle B with spin 0 and into a
particle C with spin 1/2. If this decay depends on a weak inter-
action in which parity is not conserved, 2 particles may be
produced simultaneously both in the 3 and in the P-state. Round'
the spin axis of the partiol.e A the�e exists a ring of elementary
magnets, of virtual particles 0 with a spin in the direction
Card 2/4 of the equator. There is no.eleotric dipole moment. From the

The Electromagnetic Interaction Connected with the Nonconservation 56-6-44/47
of Parity.
point of view of the classification of the magnetic properties
of a particle, the interaction CIO rot -9) obviously corresponds
to no magnetic multipolej it is here described as "anapole".
In order to understand the significance of an "anapole" the
transformation of energy into the form (In is of essential
importonee: An"anapole" enters into interaction only with such a
current as passes exactly that point at which the particle
is located. Consequently, the exterior fiold of the "anapole"
is equal to zero. In this respea~' an "anapole" is analogous
to a sperical condenser. However, the anapole is a vector and
has a certain direction. The classioal shape of an anapole may
be imagined as being like a wire spiral bent so as to form a ring.-
The current passing through the spiral produces a magnetic field
only in the interior of the torus. Upon a stiff torus exterior
magnetic fields do not'exercise any effect, but they do so in
the case of a torus imerged in an elec-~rolyte. The anapole
moment of the elementary particles is of the order of magnitude
of the product of the magnetic moment with the Compton-length
Card 3/4 'h/mc and the square of the dimensionless constant of the weak

The Electromagnetic Interaction Connected with the Nonconservation 56-6-44/47
of 1~p~rity.
interaction f 2, i.e. the anapole moment is of the order lo- 26 A.
Anapole interaction is a direct example contradicting the
claim that combined inversion and gradient invariance load to
the conservation of spatial invariance in electrodynamics.
There are 6 referencest 4 of which are Slavic.
Submitted,t September,26, 1957
AVAILABLE: Library of Congress
Card 4/4

AUTHOR ZWDOVICH Ta-B. 56~745/66
TITLE n the Pose a Effioacy of the Mesonic Catalysis oi Nuci~_ar iieactinna
(0 vozmozllnoy effektivnosti mezonnogo kataliza yadernykh reaktakiy
iussian)
(USS,
~tRIODICAL Zhurnal Eksperim.i. Teoret.Flziki,1957, Vol 33,1fr 7, P 310-311
p I)
A13STRLCT An experimental confirmation of the possibility existing in principle
(L.W.Alvarez et al.Phys.Rev.Vol.103,PP 1127,1957) of a catalysis of
a nuclear reaction between two simply charged ions (p,d,t) by.a ne-
gative meson is fiow available. This meson brings about an approxirda-
tion of the nuclei which.are in reciprocal reaction. The meson is not
used up by the nuclear reaction. If a myon falls into a liquid p+d
mixture, the probability of reaction is not more than some hundreds
per meson. This low degree of probability is due to the ratio between
the av.era 'oduction of a meson molecule (pdlt,
ge time needed for the pr
ddli ) and the life of the molecule. We ask ourselves, however, whe:
ther in nature there do not exiet long-lived mesnns, and wheth.-r such
long-lived mesons cannot cause a practically undamped nuclear react-
ion among the hydrogen isotopes? A definite negative anBwer can be
given to the first-mentioned question. In all conceiVable reactions
there is a probability that the meson forms on the helium nucleus
on the occasion of nuclear re4ations. Because of the positive charge
of the system He ~i other nuclei (among them also hydrogen) are not
able to attain sufficient approximation to this system, and the Me-
Card 1/2 son is eliminated Nvith respect to the catalyais of nuclearreaction.

On the Possible EfficAoy of the Mesonic Catalysis- 0f---5&7-65/667
Nuclear Reactions'.
The probability of fusion pas caloalated according to a method by
Migdal. Also form lae for the final state of the meson after nuclear
reaction were derived, and some numerical data were given. A non-
decaying meson might furnish an average of 8 neutrons on the occa-
sion of the reaction d+d and loo neutrons on the occasion of the re-
action d+t. The reaction*s d+d- He3+n and t+t=He4 +2n, by the way.re-
duce the neutron yield. The adhesion of the meson to the helium can
easily be observed by means of a hydrogenium. bubble chamber. On the
p7ccasion of collisions rith electrons the myon is not stripped from
-the helium.
(11-Toillustrationa)
ASSOCIATION Ph ical Institute "F.I,-;.Lebedev" o~~ the Acad my of Sciences of the
'
k
iory institut im. P.N. Lebedeva Akad
F
ag
a
erai
i U.S.S.R.
RRESENTED BY
SUBMITTED 29-4-1957
AVAILARLL Library of Congress.
Card 2/2

bo
53-3-6/6
Zelldovich, Ya.B., F----yze--, Yu.P.
Shook Waves with a Large Amplitude in Ga
"LITLE.- ses (Udarnyye volny bo"!-
shoy amplitudy v gazakh)
PERIODICAL: Uspekhi Piz. NaWk, 19579 Vol. 63, Nr 3, pp. 613 - 641 (USSR)

ABSTRACT: The present paper investigates the varioun phyaical Irocouses
taking place on the front of a shock wave as well as their in-
fluence upon the internal structure of the front. Particular
attention is paid to the radiation and absorption of light and
to the heat transfer in the front due to radiation, which are
discussed. These phenomena mainly determine the structure, the
thickness, and the brightness of the shock wave with large arapli-
tude. In the oresent survey the technically important problems
of the supersonic flow round wings with shock waves etc.
is not investigated.
The vrork begins with a f3hort survey of experimental methods.
The so-called shock tubes are at pre3ent,being frequently used
for these invostigrations. Hitherto temperatures of up to 20 000
have been attained in ,jhook Yraves. Another wide-spread method
Card '1/2 for 'the Production of ahock wave!3 io that by explosions. Shook

3hock Waves with a Large A=pliturle in Cases
53-3-6/6
waves are f-urth,---r probaluced by moving bodies in Cases trith sup-a.-
conic., velocity. The second chapter deala with the check arliaba-
tic curves. Undi-r conditions of dissociation and ionization here
the direct chonk wavc, (in whinh the gas moves vertically to the
surface of the ErcnO 'Ls invoutitatod in One syntom of coordinatw
connected wiih the explosion. The next chapters deal with via-
cous condensation disccntinui ties, the widening of the front of
a shock vave by the delay eycitation of it part of the heat ca-
pacity, the structure of the front of a shock wi-ore in conaidera-
tion of radiation, th-z_, brightness of the front of the shock
wLves vl;lt*.q large amplitudes.. The last chapter deals with heat
conduction due to electrors as well as with the jump of electron
temperature and ion tenporature in shock waves with lar,--,P- ampli-
tude. There are 14 figuren, 1 trble and 74 roferenceo, 28 of
which are Slavic.
AVAILABLM Library of Congress
Card 2/2

. .............. . .T_
47-58-2-2/30
AUTHORs Zelldovich~ Ya.B.o CareeaporAlng.Ma0er of VleA.80 USM (W'Sicov)
TITLE; Anti-Particles (Antichastitsy)
PERIODICAL: Fizika v Shkole, 1958, Nr 2, pp 9-19 (USSR)
ABSTRACTs The author explains in popular language the theory of electrons
as developed by P.A.M. Dirac in 1928, and the knti-Particle The-
ory derived from it, which was proved by the ensuing discovery
of the anti-particle called "positron". There are '2 figures slid
12 references, 6 of which are Soviet and 6 English.
AVAILABLEt Library of Congress
Card 1/1 1. Anti-particles-Theoz7 2. Electrons-Theox7

7>
V,
AUTHORt
TITLE;
PERIODICAL:
ABSTRACT:
Card 1/2
47-58-3-b/27
Zel dovich Ya B corresponding Member., AS USSR (Moscow)
On the Frogram of Physics in Secondary Schools (0 proerammakh
sredney shkoly po fizike)
Fizika v Shkole, 1958, Nr 3, pp 35-37 (USSR)
Though physics and engineering have changed considerably
during the last 50 years, the school program in physics does
not show any essential changes. The students attending the
7th class at the present time will have to deal with many now
subjects of technical physics in the future, such as the utili-
zation of atomic energy, thermonuclear hydrogen burning, radio-
technique, automation, jet aviation, etc. Therefore, the school
program in physics should be so composed, that the students
could get ar. idea on the structure of matter - molecules, atomst
electrons, electronic shells of atoms, atomic nucleus and its
basic parts, protons and neutrons. The active role of physics
should be pointed out, enabling the creation of new fields in
engineering. After having given details of desired program
of physics at school (6th and 7th classes), the author expresses

On the Program of Physics in Secondary Schools 47-58-3-6/27
his hope that the unconformity between the progress in physics
and ongineoring on the one hand and obsolete school programs
on the other hand will dinappoar In the nearont fiiturn.
AS'L'JOCIATIONt AN S32R (The USSR Academy of Sciences)
AVAILAME: Library of Congress
Card 2/2 1. Physics-Study and teaching

Z_ F_
AUTHOR: None Given
SOY/30-58-8--9/43
TITLE: At the Plenary Meetings of Departments (Ha obahchikh sob.raniyakh
otdeleniy)
PERIODICAL: Vestnik Akademii nauk SSSR, 1956, Nr 8, PP- 57-68 (USSR)
ABSTRACT: These plenary meetings were held on June 16-17 with the purpose
of nominating candidates for the AS USSR. Scientific lectures
were also held.
Department of Physical and Mathematical Sciences: The Cor-
responding Member, AS9 USSR,Ya. B. Zeltdovich spoke about the
catalysis of nuclear reaction y mesons a he resulting
phenomena. This hypothesis of a possibility of such a catalysis
was first mentioned in 1954 by A~ Do Sakharov and Ya. B.
Zeltdovich.
Department of Chemical Sciences: V. A. Kargin, Member; Academy
of Sciences, USSR,spoke about the tasks and aims of the work
of the Council.of Scientists (uchenyy sovet) on polymeric com-
pounds; the council consists of 6 sections: for the synthesis
of monomers; for the synthesis and kinetics of reactional for
the recovery of polymeric compoundsl for materials for air-
_@NEW# craft construction and other special polymerio materials; for

'S 0 V5 6' 3 4 - 5 - 3 316 1
Zel~dovich, Ya. B,, KompAnoyetb,, A, S. iayzer, Yu. P.
ol-lila-haenli vozdukha
izlucheniyem. 1) General Do,-criution oil the Phenomenon and
1,7ave (Obslichay
the Wnak Cooling a kartina yavleniya i alnbiya
voina okhla,.,hdeniya)
T;_S'R1,ODTCA1j: Zhurnal okoporimentallnoy teoreticheskoy fizi-kil. 1958,
Vol., 34;, lir 5, pp. 1?70-.1287 (USU)
AD-TRACT:
AU 1"llper tho apt-i"o7irlation theory of the cooling
Th.
wave and thn L'act 1., cn0AffijhcJ thatiq VILD laPir the- t9MpPrr.A-
ture abruptly decrPaz;o3 from th.) Inititil value to the "tom -
perature of tran8parency" T,,. A diagram nho~no the euccensivo
changes of thf- temperature distributions, by taking adlubntic
cooling into account. The authors try to foind the solution
of the nonateady equations of the radiating heat exchange.
These aolutions,have the form T(x - ut) and correspond to
a plane wave propagated with the constant velocity in the
gas at the given temperature T and with the density o.,q But
Card 113 theso- equations are not solved by exact solutions of the kind

SOV/56-34-5-33/61
On Radiation Cooling of Air. I. General Vascription of the Phenomenon and
the Weak,Cooling Wave
T(x ut). The causes of this fact are diacuosed* If the
cooling wave propagates In:expanding air, adiabatic cooling
transports the air layeraj~ which were cooled bY the radia-
~ion into a region of temj~oratures so lov tbat. they be-
vonia practically transp;.!r'~i0v. The authora do not investigate
'the additional absorption:~of~the light.at low temperatures
due to oxide and dioxide,'of nitrogen proiuced in the heated
airc Moreover, the, intenee molecular absorption at low tem.-
peratures which is easer.'-.tial for the ultraviolet radiation
with 2000 1) is neglected. There are two ways of taking t-he
real facts into account. First? it is possible to introduce
an additional constant term A (which characterizes adiabatic
cooling) into the energy equation. Secondly; it is possible
to exclvde from the invostigation the weakly absorbing gas
region which i5 cooled below the temperature of transparency*
In order to determine the radiati,~n flax) the aut~onnapply
the diffusion approximation to thc exact kinetic equation
which takea into account the angular distribution of the ra-
diation in an approximate manner. Tn a great part of the
cooling wave the true radiation density U is very similar to
Card 2/3 its equilibrium value U p. In the region with cooled air,

On Radift t -ion r(,;O I irg C ir . 1 . G'?nOr1j 33/06'
De 2. riot o I' t it c, j-, li- I-,;, f~ un an, J tiip i=ctk Cooling ve
hcwev.~-,r.. U ia very difterent, from U Luot jy, Ui,,~ withorks
calculate the sot-cial ca3~- nhvre T Pis only a little hit'riler
thari T,-. Jr, thiu it i-4 Tx,~%sjbjc to fisid tho oxact amt--
1,"AIQ~A nolu'don or thii problum. There are 3 flicure3, I
t a b I c , ti ud 6 -(- t' c, n - c. 1j '-~f shicil arf, Sievint.
khj-miche;~kcq fizik-1 (Imetitute 04 f1lemictil Phyaicn)
'JURMITT' D: 'Necomber 20. 1957
1. Air-Cooling 2. Ifeat transfer-Theory 3. Mathematios
-Applications
Card 313

AUTHORS: Kompaneyets, A. S., SOY/56-34-6-11/51
Rayzer, Yu. P.
TITLE: On Air'Cooling by Radiation (Ob okhlazhdenii vozdukha
izluoheniyam
PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1958,
Vol 34, Nr 69 pp 1447 - 1454 (USSR)
ABSTRACT: The first part 6f this investigation discussed the cooling
of a great volume of heated air in a qualitative manner,
it dealt with weak cooling waves. This paper, however, deals
with the theory of a strong cooling wave in which the
higher temperature may be infinitely high. This paper has
to determine the radiation flux which moves from the
front of the cooling wave towards infinity and to obtain,!
the temperature distribution on front of the cooling
wave. One of the following two methods has to be used:
either to introduce a constant term into the energy equation
or to determine from the very beginning the "transparency
temperature" T according to a formula given in the first
2
f
Card 1 part of this investigation. In the latter case one has

Pn Air Cooling. by Radiation SOV156-34-6-11151
to aso=e that the air is absolutely transparent for
T 2m 7E the decay with
emission of ly seems to be more Drobable. For the decay time,
the author expects the value 10-18 10-2o see. Then the
.proposed a method fez the detection (from the energy-
author
momentum balance) of cacao with aingle production ofQ, by
the interaction of charged particles. There may be the j:eaction
pl+p2 - P3 +p4+9 where P, denotes the proton which leaves the
acceleratorp p _' the proton at rest; and denote protons,
2 P3 P4
too. The decay of 9 followaafter this process. The author
gives the expression
A=[Ej + Me 2 _E - E 2 2 2J. When only one
3 4) (]~l -P3 P4
2 4
i~produced,there is A=myc When 2 or more pions are produced
t e opectrum of the values of A -,all be continuous. If a
sufficiently narrow line will be observed experimentally the
existence of the nuclear-active neutral motion will be do-
monstrated and it will be posoible to measure the mass of
Card 2/3 this meson. The author thanks V.B.Berestetskiy and L.B.Okun' for

MEW,
The Heavy Neutral Meson: Decay and Way of Detection SOY/56-34-6-41/51
useful indications. There are 5 referencesq 2 of which are
Soviet.
ASSOCIATION: Institut khimicheskoy fiziki Akademii nauk SSSR (Institute
for Chemical PhysicsAS USSR)
SUBMITTED: March 91 1958
Card V3

AUTHORS, Zelldovich, !cc. B., Gerphtoyn, S. S. Soy/a6-35-3-14/6i
11417 FI--
-ITLE:: 'riation of llyororen osic molecules (Obrazoi,-,.niye
T 01
n, e~:omolelrul vodoroda)
PERIODICAL- Zhurnal c!-sr,(,ri'-iLnt-,tal'nO,,f i L0101.0tichco,40Y fiziki, 1958,
Vol 35, Nr 3, i)i) 649 - 654 (USSR)
ABSTRACT;
Card 1/#
The formation of hydro--en g-mesic molecules is of
interest for the theory of g-mesic catalysis of nuclear
reactiono for tv.,o reasono: Firstly, becFuse the yield
of nucle4.,.r reactiormv dej~cndtj ovoentijlly on the
probability of the forma tion of mesic molecules, and
aecondly, because the formiAion of inesic molecules
(Pp)~ introducon thcl process. (pp)+~-fornation is -also
of for inve'rAj,,,~tIono o1, the elcrentary (png~)-
interactions ,nd i--voble-nis conneeted ,-;ith the thoory of
weak interaction. In the preoent paper a vwchtiniom for the
formation of hydro,,,,en mesic molecul~o io theoretically
described. This mechaniSm is based on the assumution of a
dipole transition from the S-wave in the repulsion state
to the rotational level K= 1 with trancfer of the

The Formation of Hydrogen Mesic Moi-ecules SOV/56-35-3-14/61
energy to a conversion electron. An anoatz for W
er-rediate
(Formula 2) after some int at , -30
e Os (0,f. al.
fi,c~ures 1,2, potential curves E(R), effective potentials
for t--eZ
- state for K=O and K=I in considerf.tion
9
of the, oorrc,ction becn~,-.se of nuclear motiono Morse
(?Aor~~e)-functlon (Ref 'I), BI tit d R i
9 n moooidomin i~initn)
1
, rep .
leads to th( ult:111 ft 1 , 5 j 0 1300
for the probLbility
of formation of a meoic molcculc(pp) -~ in liquid

hydroP-en. The machanism described in the present paper
applien to the catalyoin of' p+d nucl ear reactions as
well as for the g-+1) 4 n+V process in liquid hZ(dr,),;e-n.
The influence exercised by reciproca l orientations of
the proton- and mescv spins upon the probability of the
g+p -) n+)) process will be dealt with by the authoLs in a
later paper. There are 2 figures and 9 references, 4
of whic"n are Sovietu
ASSOC I~r'IJOJT
Institut fizcheskikh problem Akadem t e
iJ nauk SSSR (Instit-
for Phycic al Problems of the Academy of Sciences USSP,)
Card 211

21M SOV/56-35-3-57/61
-,,AUT11ORO; Z e. I I jch-rY-&r-,u., ershteyn, S. S.
T IT LE: The Universal Fermi Intoraction mid vie Capture of a g-Mesori
by a Proton (Universallnoye Fermi-y2almoddy0tviyo i 24kilvat
P-ma-zona protonom)
PERIODICAL: Zhurnal eksperimentallnoy i toorotichookoy fiziki, 19581
Vol 35, Nr 3, pp 821-823 (USSIO
ABSTRACT: Cell-Mann and Peyaman (Ref 1) and also E. C. G. Suderman
and R. E. Marshak (Ref 2) independently suggested principles
which lead to a certain variant of the form of interaction
between 4 fermions. According to whether A, B, C, D are "par-
ticles" or "antiparticles", these principles offer two dif-
ferent possibilities: either an interaction (V - A) (which
is invariant with respect to the process of the pair-wise
joining of the particles)
a 'Ir D) or a (V + A)-interaction
H I = a 1/2 G( TAY
a '!9-B) ( YCy
11
A
1/2
L alff,)). In the case of H,
H2 = 8 C, (TYA I p~ YB) ( YCy
Card 1/4 I
-3

SOV/56-35-3-57/61
The Universal Fermi Interaction and the Capture of a p-Meson by a Proton
are the wave functions of the "particles"
0 1r
I V
# T
V
C
D
A
B
and it holds that a - (1 + YO/2' In the case of H21 TA
and 'ffB are the wave functions of the antiparticles and it
)/2. In the case of a different manner
holds that a - (I - 75 11
of joining the particles in pairs, H2 has the (S -,P) shape:
1/2
H = 2.8 G ( Y
a If. a V ). The present paper in all
)(ff
2 D
A
C B
formulae investigates only one and the same process
A + C - B + D, and it is agreed that such particles are
described as "particles" as have a left longitudinal
zation at v/c = 1. The antiparticles then have the oopositt
sign of polarization. The difference between the interactions
HI and . 112is particularl4marked in the case of transition
to the last-mentioned formula. The ideas discussed here fur-
nish the
following result: In the variant V + A the (S - P)
.
probabilities of capture in the states F - 0 and F - 1 (where
F denotes the total spin of the proton and the myon) are
Card 2/4 exactly equal to each other. However, in the variant V - A
:3

SOV/56-35-3-57/61
The Universal Fermi Interaction and.the Capture of a ji-Meson by a Proton
Card 3/4
'3
the probability of capture from F - 1 is equal to zero,
whereas for the caDture from F - 0 it amounts to four times
the value averaged over the spins. In the case of the capture
of a myon by a proton, this capture is effected from a state
with the hyperfine structure F = 0. In this state the spins
of the myon and of the proton are antiparallel to each other.
Moaouremont of the absolute yield of the reaction
11 + 1,,,)- 11 + V in hydrogen at the napture from F w 0 makes
it possible to determine the relative sibrn of V and A in
the uIc-mentary law of interaction (4V PIO, Expressions are
written down for the Hamiltonian of the intoraction of real
nucleonswith (49 ) and also for the absolute yield of the
reaction g + P -> 11 + V from the slate F = 0. As the pro-
duction of meeo-molecule-ions (pp)' in liquid hydrogen compli-
cates the representation of the catture of myons by protons,
experiments must be carried out at such densities of hydrogen
as are from 20 oto 30 times lower than the density of liquid
hydrogen a 0 K. There are 11 references, 4 of which are
Soviet.

SOV/56-35-6-13/44
,-AUTqORS: Zeltdovich, Ya. B., Rayzerj Tut P.

TITLE: physical Phenomena During the Expansion of Solid Bodies in a
Vacuum, Which Were Compressed by Strong Shock Waves
(Fizicheskiye yavleniya pri rasehirenii v vakuum tverdykh
tel, szhatykh sillnymi udarnymi volnami)
PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1958,
Vol 35, Nr 6t PP 1402-1406 (USSR)
ABSTRACT: A number of Soviet authors such no Al'tahuler, Xrupnikov,
Brazhnik, Ledenev, Zhuchikhin, Kormer, Sini-csynl' Kuryapin,
as well as the authors of the present paper have already worked
on this problem; very strong.shock waves (amplitudes of the
order of 10 million atmospherea, temperatures on the wave
f ront of f rom 10 t o 100006 deo7ees) and transparent solid bodies
were investigated(Refo 1-3)- In the present paper the authors
carry out a theoretical investigation of optical and other
physical properties shown by a nontransparent primarily solid
body when expanding after being compressed by a atrong shock
wavo. The hydrodynamica of the expansion process is at first
discussed in short. The bright luminonconoo occurring on the
Card 1/3 front is then investigated. Absorption and omission of visiblo

e;OV/56-35-6-13/44
Physical Phenomena During the Expansion of Solid Bodies in a Vacuum, Yrnich
Were Compressed by Strong Shook Waves
light in monoatomia gasou (an e.g. metal vapor) occurs as a
result of the photoeffect in highly excited atomic lovolo an
well as in consequence of the inverse processes, i.e. of
photorecombination. According to Boltzmann (Bolltsm.~n) it
holds for the absorpiion process that
QGXP[-(I-hv)/kT], where I is the ionization potential.
For temperature, the.ap proximated solution T
off - (I - hV)/k
ln(tTp
ff'const) is given. (P is a constant of the order of
some units). A numerical estimation for Teff at I - 5 4 8 ev
results in 3000 - 70000 (t'-'-'1O-10 sea). In the followinRp the
condensation of the substance as well as the recombination
of electrons and ions is dealt with. The authors do not mention
further calculations or numerical results, but the problems
are merely discussed. In conclusion, theyexproan thoir
gratitude to L. V. All-tshuler and S. B. Kormer for discussions.
Card 2/3 A footnote draws the attention to the fact that in previous

5()V/56-35-6-13/44
Phyoical Phenomena During the Expansion of Solid Bodies in a Vacuum, Which
Were Compressed by Strong Shock Wavou
works (Refs 4-6) the authors had carried out a theoretical
investigation of the luminescence of gases, especially of air,
in a shock wave. There are 9 references, 6 of which are
Soviet.
SUBMITTED: July 11, 1956
Card 3/3
M-0

AUTHORS:
TITLE:
20-il8-4-13/61
Zelsdovichi Ya. B., Corresponding Member AS USSR,
BYaren 1a,
Asymptotic Properties of ' Automodel. Solutions of
Equations for the Unsteady Motion of Gas Through Porous
Media (0b asimptoticheskikh svoystvakh avtomodelinykh resheniy
uravneniy neatatsionarnoy filftratsii gaza)
PERIODICAL: Doklady Akademi i Nauk SSSR, 1958t Vol- 118t Nr 4, pp. 671-674
(USSR)
ABSTRACT: At first$ a short'reference is made to previous papers
dealing with the same subject. The authors here investigate
the asymptotic behaviour of the solutions of Cauchy's problem
for the equations by, L. S. Leybenzon for the unsteady
filtration of a gas: 3 U 2 62un+1 Jw 1/(n+l) 2A2w
- a or -0t a,
0 t
n+1 2
W = U Here n denotes the density of the gas, a a
constant depending upon the properties of the medium and of
the gas, x a coordinate (_00_~
~ x KO.Transformation on Electrons
2 1
~
(Prevrashcheniye KO KO na elektronakh)
1
2
PERIODICALs Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1959,
Vol 36# Hr 5, PP 1381-1386,(USSR)
ABSTRACTs The present theoretical paper investigates the
BO-transformation of a X 0 meson into a Ko-meson in the
2- 1
case of interaction with electrons, i. o. the reaction
K2+ e - Ki + e. The BO-moment and K-e interaction are
.first discussed in short. The following chapter deals with
an estimation of the cross section of this process. If
the cross section does not depend on the energy (mass)
difference of K 2 and K, nor on the kinetic energy of the
X-mesons (in nonrelativistic approximation), the IC 7"
2
*transformation cross section in collisions with nucleons
Card 1/0 amounts to several millibarn; the nuclear K2---K, production
-7

The X0 -3,
2 Ko Transformation on Electrons SOY/56-36-5-11/76
1
cross section on an electron is estimated as amounting
to 5.10-27cm 2 in the laboratory system the X-interaction
with nucleons or electrons has a totally different angular
distribution. For X-energies of the order of 100 Mev the
differential nuclear cross section of an electron is
- 2.10-28 cm 2/steradian, For the scattering
da, /dnjq
nual 0
.
2
X-mesons on electrons d&-
of
) a-
/m
l/4-ri
/dj11
6(m
1
e
8.
e
e
,
_
K
-30
1
15.10
is given. In the last part of this paper, Ki
production in a non-scattered beam is finally investigated,
and the correction to Good's theory (of..Ref 7) contributed
by EO interaction is estimated. The contribution made by
EO interaction of K 2 with electrons to the refraction
index of matter attains 10 % in the above estimate, which
may result in a correction of + 25 % to Good's ratio of
KI-production at small angles lid in a non-scattered beam.
The author thanks L. D.L&Adau and L. B. Okun' for
Card 2/0 discussions. Thereare Treferenv5sl 1 of which is Soviet.

21 (1 )p (240)
BOT156-36-6-62166
AUTHOR: Zelldovicht Ta. B.
TITLE: Storage of Cold Neutrons (Khrananiye kholodnykh neytronov)
PERIODICAL: Zhurnal ekoperimentallnoy i tooreticheskoy fiziki, 1959#
Vol 36, Hr 6, Pp 1952 - 1953 (USSR)
ABSTRACT: Slow neutrons are subjected to total internal reflection in the
case of grszing incidence on the surface of most substances. If
velocities are sufficiently low, they cannot, even at normal
pressure, penetrate into the material. For carbon (density
2g/cm3) the critical neutron-velocity is nearly 5 m/sec, for
beryllium it is about 7 m/sec. These facts give rise to a dis-
-cussion of the,possibilities of storing oold neutrons in clo;3-
ea 0, ontainer6& Thust:a-graphite container, which is closed on
all-.sidesi.and-'whieh containe.neutrons with y4v is in-
crit
vestigateal neutrons in such a container can decrease.only be-...
cause of their limited life time (half life^,12 min)l they are
able to penetrate into the walls only up to depths having the
6
order of magnitude of their wavelength (-,10- cm). There follows
Card 113 a discussion,of the capture cross sections for neutrons in car-

Storage of Cold Neutrons BOY/56-36-6-62/66
bon (5.5-10-27cm 2 dtv 2.2.105 cm/sec); for neutrons in a con-
tainer absorption time is 105seo = 24 h. The author then dis-
cusses the difficulties and possibilities of collecting sue'..
neutrons. The most promising method appears to be using a re-
actor with a flux of 1012 neutrone/cm 2see (1011n/cm2sec at 304
average velocity 2.104cm'/seo,- 5.106 thermal neutrons/cm3; a-
mong them*are about 50 slow neutrons/cM3 P i-e- V4 500 cm/sec
which corresponds to 5,107 slow neutrons/IM3. Heating of the
neutrons in the container up to velocities of >V crit can be re-
alized by means of a mechanical displacement of the graphite
surfaca with a velocity of some meters per second. Finally, it
is pointed out that the imaginary gart of the paeudopotential
(according to the theory of the refraction index), which des-
cribes absorption, is small compar,ed to the real part describ-
ing scatteringi its ratio is, r A, 1 11 is that neutron wave
Card 2/3 length at which a a 60.11.*ThereforWabsorption does not influ-

Storage of Cold Neutrons BOV156-36-6-62166
ence the exponential law of the damping of the neutron wave
function in a medium with total internal reflection. There are
2 Soviet references.
SUBMITTED: April 3, 1959
Card 3/3

21(l),24(5)
AUTHOR: Zelldovich, Ya. B. SOV/56-37-2-44/56
TITLE: The Number of Elementary Baryons and the Hypothesis of the
Universal Repulsion of Baryons
PERIODICAL: Zhurnal eksperimi-ataltnoy-.i,teoretichookoy fizikil 1959#
Vol 37, Nr 2(8)p PP 569-570 (USSR)
ABSTRACT: The author first discusses the following hypothetical experi-.
ment: neutrons are compressed to a density so as to give a
2
Fermi limit energy exceeding several Mo . This is thermo-
dynamically favorable to the partial conversion of neutrons
into other baryons - protons and hyperons. In this case the
number of independent Fermi distributions to be investigated
is equal to the number of elementary particles. This offers
an approach to the problem concerning the number of elemen-
tary particles, because only truly elementary particles have
a separate Fermi distribution. In the asymptotic expression
4/3
for the energy of the relativistic Fermi gas & = A11
holds,
where N denotes the total density of all baryons, the coeffi-

d cient A being specified by
1/3 113 1 .-1/3
Car
1/4 /4] 9 11c = aV
A

The Number of Elementary Baryono and tho Hypothonlo SOV/56-3'7-2-44/56
of the Universal Repulsion of Baryons
Here V denotes the number of types of elementary particles
and a the coefficient for. V - 1. This offers, In principle,
a Possibility of determining V . If it is insisted that each
particle be denoted differently (subscript 1 and 2), actualiy
consisting of the same fermion with different surrounding
boson clouds, the increase of the energy of the system can-
ainting of N I particles of the first and N 2 particles of the
second type will, as compared to the Fermi energy of each in-
dividual group, appear as an apparent repulsion of these
particles: a(H + 11 )4/3 . a,14/3 + aN4/3 + V , where IV
1 2 1 2
denotes the energy of apparent interaction. There arises the
problem as to whether the repulsion of the nucleons observed
experimentally ("hard core") at small distances is just this
"apparent" interaction which is due to the fact that all
baryons carry in their "interior" a common fermion - the
carrier of the conserved fermion charge. Such a repulsion
can be traced by an elementary example. The author investi-
Card 2/4 gates the collision of a proton p with a mesic atom H can-

The Number of Elementary Baryons and the Hypothesis SOV/56-37-2-44/56
of the Universal Repulsion of.Baryona
sisting of p + n-. p and H are considered two different
particles, each with the spin 1/2. The wave function ~ of
the system mayafter a separation of the motion of the center
of mass and the spin function be written as follows:
-R""A where 'R - 7"b - 'r
1 2
?a0, 'r)/2 holds# An approximate expression for is
2
written.,4own. In reality, the action of the operator
(_t2 11 --* Y) must be taken into account,
/2')AR upon R,
g denoting the reduced mass of both protons. If R is small
this term contributes El -4~( 2/2p),&RjX> . (-t~2 /2,)2R -2.
The Schroedinger equation for considering E only, secures
that is zero.for R - 0 if is a spherical symmetrical
function. When investigating the scattering of p on H the
contribution El can be regarded as a strong repulsion at low
Card 3/4 distances, after the 3s component has been Beparated. El is

The Number of Elementary Baryons and the Hypothesis 307/56-37-2-44/56
of the Universal Repulsion of Baryons
independent of the properties (maos and charge) of the meson.
A repulsion occurs also in the state 1S, in the case of two
similar particles (for example two H-atoms) accompanied by
meson q1ouds with I
, but this repulsion is compensated by
n
the attraction in the P state. When similar particles inter-
act, thet short range interaction averaged properly over states
with different momenta is zero. The authors express their
gratitude to A. D. Sakharov for the discussion on the state
of matter in superdense stars, which induced the author to
this study. There is 1 reference.
SUBMITTED: may 11, 1959
Card 4/4

16.8100,21-5000,24.6720,21~.6800,24.6810 77005
SOV/56-37-6-J45/55
AUTHOR: Zeltdovich Ya. B.
TITLE: Letter to the Editor. Mass of ~L-Meson and of Elec-
tron
PERIODICAL: Zhurnal eksperimentallnoy I teoreticheskoy fiziki,
ABSTRACT:
Card 1/3
1959, Vol 37, Nr 6, PP 1817-1819 (USSR)
The LL -meson I, electron, and neutrino are related to
,otheriparticles only through electromagnetic and 'weak
interaction. Therefore, it was assumed that the
masses of m and me can be expressed by means of
the electrIagnetic interaction constant e = 4.8 x
10-10 x CMS/2 x see-I,, e 2/~c =d= 1/137, and
through the unlyersal c.Qnstant pf weak nterac Ion
= 10
g 9 g x m5 x see-2, ge/ /142
.41 x io c
(where M N is nucleon mass). Numerically the masses
,are

Letter to the Editor. Mass of Ij'-Me3on 77005
and of Electron SOV/56-37-6-45/55
m,, 0, 5 7 R 79-c" '71, 0,38 1/0.0 lhe
The structure of the formula can be exDlained by the
concept that the weak interactions proceed in the
second order through an intermediately charged boson3,
X, having)spin i (cf., J. Schwin-ger, Ann. Physik, 2,
1107, 1957 so that
(where, gX is interaction.constant, having dimensions
of e , of the Perial current with X). it was ass=ned
that the masses of 11-mezon and electron aro due to
the interaction with X and the quant,2 -h Identical
dimensionle.ss constant g)r e -/1/137, i.e.:
Card 2P_,

Letter to the Editor. Mass of ~L-14eson 77005
and of Electron SOV/56-37-6-45/55
fit, 0,40 ' ill., 0,40 mv.
1:17 hr
ASSOCIATION:
-SUBMITTED:
(3)
0,27 AIX 0,27 AIX.
U17)
The interaction X with 1-4 , e, and V nullifies the
parity,and therefore thlfj fact should be conoidered
in the theory of the masses, which depend on the
interaction. There are 10,references, I Soviet, 2
Italian, 1 German, 6 U.S. The most recent U.S.
references aro: M. Oell-Mann, R. Faynman, Phyo.
Rev.., 109, 193 (1958); W. a. Cowland, Nucl. Phys.,
8, 39 (1958); J. R, Gatland, Nucl. Phys., 9, 267
1958 ; G. Marx, K. L. Nagy, Nucl. Phys. 12, 125,
R959~; 11. Frohlich, Nuel. Phys. 7j 148 (1958).
Inst. Theoret. and Experiment. Phys. Acad, Sciences
USSR (Institut teoreticheskoy i eskperimeritallnoy
fizilco Alcademii nauk SSSR)
September 24, 1959 Card 3/3

5 (.1), 2 (5)
AUTHORS: Rivin, Y. A# (Deceased), ZSIA407teftV SOVI,20-125-6-33161
Ya. B., Academician, Toukerman, V. A., Soflina, V. V.,
B67regvvskiy, A. S.
TITLEt Investig~tion of the Density Distribution in the Detonation
Front of Gas Mixtures by the X-Ray-examination Method
(Issledovaniye rasprodeloniya plotnosti vo fronte detonatsii
gazovykh smesey rentgenograficheakim metodom)
PERIODICAL: Doklady Akademii nauk SSS,R, 19599 Vol 125t ffr-6,
pp 1292-1293 .(USSR)
ABSTRACT: The investigation mentioned in the title was begun in 1945,
but had to be interrupted because of the illness and death of
11. A. Rivin. It'was. resumed in.1957. The method employed in
the p"resent investi-gation uses a needle-shaped pulse tube
(Ref 10) with zirconium anode as a source, and krypton, which
is added to the detonating gas, as an absorbing medium. The
characteristic radiation of,zirconium M = 0.788 R) incides
kb'
upon the absorption band of krypton. This oTombination made
it possible to detect density variations in relatively thin
Card 1/2 layers of gas mixtures. The main result is that a thin layer

T 7

Investigation of the Denalty Dintribution in the SOY/20-125-6-33/61
'Dbtonation Front of Gan Mixturee by the X-Ray-examination Method
of gas, with a density that is from three to four times i-'-at
of the original density, was found to exist in the front of
the detonating wave. Figure 1 shows the density distribution
in pure krypton,and in the detonating wave of a mixture of
detonating gas and krypton. The authors thank N. N. Orlova
for her collaboration, Ye. I. Leonttyeva,for taking part
in the experiments of 1945# and R. M. Zaydel' for his
assistance in carrying out calculations. There are 11 figure
and .10 references, 4 of which are Soviet,
ASSOCIATION: Institut khimicheskoy fiziki Akademii nauk SSSR (Institute
for Chemical Physics of the Academy of Sciences, USSR)
SVBMITTEDi February 169 1959
Card 2/2

V
R ~S
R

VILVI Yalkov Llorisovich
F,
Z
Theory of detonatlifor, Ya. B. Zeldc,,icli and I..S. Yb:,inarc I c;~ Yorr
and London, Academic Press, 196o
284 p Diar-rs., Graphs.
TransiDted'from the ori-inal Russian: Teorl-
ya detonatsii, ~~oscow, 195"

ZELIDOVICR,,,..Yakoy Borisovicho akademik. Prinimali uchastiye, KANUILOVe
NORKIN, S.B., red.; iU~ApjrTVA,
N,A*, takhnered*
(Higher mathematics for beginners and its applications in
physical Vysshaia matematika dlia nachinaiushchlkh i ee pri-
lozhenila k fizike. Moskva. Gos.izd-vo fiziko-matem.lit-ry,
196o. 46o p. (HIRA 13:7)
Nothamriti0e)

i1v,r*)0vI_C_II,*.Ya. B.', BAREMBLATT, G. 1. (Moscow)
IlOn the Stability of SelfsimJlar and Other Invnriant Solutions in the
Theory ofWave Propagation."
report presented at the First All-Union Congress on Theoretical and Applied
Mechanics~ Moscow, 27 Jan 3 Feb 1960.