SCIENTIFIC ABSTRACT VAYNSHTEYN, L.A. - VAYNSHTEYN, L.A.

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• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001859120008-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 1, 2001
• Sequence Number: 8
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

I -
V ;". 7. 4 j _1 ~, - ' 7 % 6-

XTA 17r_-TU86
AYNSHTEYN L. 1'.
USSR/Physics - Wave Guides 3-1 Oct 50
"Diffraction of Waves at Open End of a Circular Wave
Guide Whose Diameter is Considerably Greater Than
Wave Length," L. A. Vaynshteyn
"Dok Ak Nauk SSSR" Vol LKXIV,, No 5., PP 909-913
Formulas for radiation characteristics had been
obtained previously by Vaynshteyn in studies of
radiation of various types of electromagnetic waves-
from open end of cir wave guide. Considers now
physical meaning of these formulas for radiation
field under condition thatdiam of pipe is greater
than wave length. Submitted by Acad M. A.
Leontovich 5 Aug 50.
172T86

USSR/Electronics - Wave Guides Mar 51
"General Theory of Nontjymmetrical Waves in a Round
Wave Guide With Open End," L. A. Vaynshteyn
"Zhur Tekh Fiziki" Vol XXI, No 3, pp,3287---1.545
Obtains exact soln of subject problem. Soln is
complicated, because electromagnetic fld has 2
Hertz functions due to diffraction of vave on tube's
end. Gives formulas for coeff of reflection of
incoming wave and for coeff of transformation of
elec waves into magnetic and vice versa. Derives
approx formulas for radiation f1d.
LC i8oT46

1W-M
USSR/Blectronica Wave Guides Har 51,
"Numerical Results From the Theory of Nansymnetricall
Waves in a Round Wave Guide With Open End (Waves
El and Hl)," L. A. Vayashteyn
"Zhur Tekh Fiziki" Vol XXI, No 31 PP 346-357
Constructs graphs of abs magnitudes and-phases of:
coeff of reflection from open end, and coeff of
transformation of one kind of wave into another.
Gives graphs of radiation characteristics of waves
El and H and compares results with Huygens'
prInciplelal Studies excitation of various waves in
guide by plane-wave incident an open end.

VATISHMMI, L. A.
VAYli7,iT---Rl,, L. A. - "Diffraction of Electromapnetic and Sound Waves at the
Open End of a Wave rjuide.!' S'Sub 31 Mar 52, Physics Inst imeni P. T;. Lebedev,
Acad Sci USSR. (Dissertation for the Degree of Doctor in Physicomathe-
matical Sciences).
SO: Vechernaya Moskva January-December 19-2

USSR/Physics - Photocurrent Aug 52
"Appearance of PnAlte~rnating Component in the
Photocurrent of Photocells Nring Strong ILlumi-
nation," L.'A. Vaynshteyn, L. P. Malyavkin,
Phys Inst. imeni P. N. Lebedev, Acad Sci USSR
"Zhur Tekh Fiz" Vol 22, No 8, PP 1315-1317
The appea-rance of an alternating component of
audiofrequency ras observed in the photocurreat
of vacuum or gas-fillpe~,photocells during illumi-
nation of the order of 101 luxes - Sometimes -high-
~r6quency oscillations were superimposed on the
226M
Oscillations of audiofrequency. Tiadebted to V. V.
Druzhinin and'S. 'L. Mandelsht6m. ftq6ived 16 may 52.
226T97
r4

PA 24OT95
USSR/Pliysics Optical Transitions 21 Dee 52
"Approximate Method of Computing the Probabili-
ties of Optical Transitions," L. A. Vaynshteyn
and B. M. Yavorskiyp All-Union Inst of Correspon-
dence Courses of Textile and LiElit Industry
DAN SSSR" Vol 87, No 6, pp 919-922
Analyzes functions by J. Slater (cf. Phys Rev.
36,(1934, P. Gombas Acta Physica (Budapest) 1,
3, l9r,2; V. Pok et al. Sow. Mys. 6,(193q, etc.)
and attempts to simplify computations for spe-
cific cases. Presented by Acad G. S. Landsberg
21 Oct 52.
240T95

VAYNSHUYN, L.A.; SHCRIN, N.A., redaktor; UWOVA, A.N., tekhnicheskiy
~-,- ~!:r6ffgTftI&i-g ~
[Diffraction of electromagnetic and sound waves at the open and
of a wave guide] Diffrak-taiia elektromagnitrqkh i zvukovykh vo'ln
na otkrytom kontes volnovoda. Moskva, Izd-vo "Sovetskoe radio,'
1953. 203 p. [Hicrofilml (MIRA 7:10)
(Electric waves) (Sound waves)

VIV TMIEVrL
Y1.
T-T
EC:tr-2320
PHOTOELECTRIC INVESTIGATION OF THE SPECTRUM
FROM THE CHANNEL OF A SPARK DIUCHARGE. L. A.
-L. P. Malyavitin. and S. L.
j_.j,,FVaYnshteTn, A. 14. Leontovich.
Mandel'shtam. Translated from Zhur. Ekaptl'. ITcoret.
Fit. 24, 326-3a(1963). 14~- Available frorn Associated
Yn_4~fcal Rrvicas (TrAnsi. floGfIlij. Civil Orange, N. J.
A doscripilen In given of the rnethW and np~wratus fur
photoelectric registration of thc- Intensity of spectral lines
In a single pulse of a spirk discharge, using an oscilloscope.
An Investigation Is made of the change taking place during
the procers of 6evelopment of a apnrk discharge In air, of
the Intocoftles of the spectral lines of nitrcVen of various
degrees of foritation. and of the line H, A number of In-
tarrelations which characterits the excitation of the
spectrum In the discharge channel have been established.
(auth)

VATTISK!-~~XN, L. A., and ~IAVRf~Kly)
"Photo ionization of G-Tiplex Atoan," Dokl. AN SEZIR, 39, No.5, P7.. ~132-16)
1955. All-Union Correspondence Inst. of Textile and Light Industry,
Galan of the probability of transition of an optical electron into a continuous
spectrum, a method for the calcn of th~! probabilities of transitions between discrete
levels of an atom havincy already been pi-onosed Irr the authors (DANI 17, 919, IC-52) .
State that the rhotolonization processes and. also the reverse rrouesses of reconbinat-ion 4-
with radiation ~re essential in many nroblermq of astroobysics and gas-discharge p s, s.
Q . k. -C
Presented by Acad. G.S.Landsberp, 19 Feb 5 3. 259TI5

VAYNSHT3,.Y.1j L. A. 26OT97
USSR/Physics - spectral Lines 11 Jun 5?
"Widening of Spectral Lines in Consequence of
the-QuAdrupole StarkFfrect," 1. 1. Sobel'man
ancl.'L. A. Vaynshtpyn.~ll-Union Correspondence-
School Inst of Textile and Light Industry
DAN SSSR, Vol 90, No 5, pp 757-760
Givesan expreision for Un"n, a second-order po-
tential-energy term occurring in the familiar
formula'for the displacement of the nth energy
level of an atom due to the presence of an
electxical field, namely, in the case of a
26oT97
non-hydrogenlike atom with one or two valence
electrons. darry out a numerical evaluation
for Na,-Ca, axid.Cat Presented by Acad G. S.
Landsberg 17 Apr 53.

Bids
Cad 111 Pub, 43 IZ/97
Authors # Vaynshteyn, L. A., and Yavorskiy, B. M.
Title # Approximate mithod for the calculation of probabilities of optical
transitions
Periodical, t Izv. AN SSSR. Ser. fiz. 18/2, page 251, Mar-Apr 1954
.Ab6tract I The contents of this report were publiL-hed in Doklady Akademii. Nauk SSSR
(Reports of the Academy of Sciences USSR), vol. 87, page 919, 1952.
,Institution : .........
Submitted : .........

Po AR"07041R,
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------------ I-
USSR/Radiophysics - Superhigh Frequencies, 1-11
Abst Journals Referat Zhur - Fizika, No 12, 1956, 35427
Author: Vaynahteyn, L. A.
Institution: None
Title: Electron Wave in Decelerating Systems. I. General Theory
Original
Periodical: Zh. tekhn. fiziki, 1956, 26, No i, 126-14o
Abstract: A linear theory is developed for electron waves in "smooth" or
approximately "smooth" decelerating systems. On the basis of the
rigorous theory of excitation of waveguides by specified currents
(Referat Zhur - Fizika, 1955, 5366), and integral equation Is ob-
tained for the distribution function ~v(x,y) of the electron cj---
rent in the transverse cross section. The analysis is carried out
under the assumption that the flow has one velocity, that the sig-
nals are small, and that the relationship between z and t :U3 in
the form of the function exp (-jwt + jhz). The wave number,3 h;
being the eigenvalues of this equation, represent stationary
Card 1/2

k
IJSSR/Hadiophy8ice - Superhigh Frequencies, 1-11
Abst Journal: Referat Zhur - Fizika, No 12, 1956, 35427
Abstract: functional8 of the distribution y(x,y), cud can therefore be de-
termined by using a variational method' An equation is given for
h, its solutions are given, and the re~i=8 of the values of the
parameters corresponding to complex roots of h are determined.
Card 2/2

N S H TL N
USSR/Radio-obyBics Superhigh Frequencies, 1-11
Abst Journals Referat Zhur - Fizilm, No 12, 1956, 35428
Author: VaynBhteyn, L. A.
Institution: Non e
Title: Electron Wave in Decelerating Systems. II. Specific Problems
Original
Periodical: Zh. tekhn. fiziki., 1956, 26, No 1, 141-148
Abstract: On the basis of the general theory developed in the first par. of
the article (see abstract 35427) an investigation was made of the
elect,ron waves in the following decelerating systems: dielectric-
filled waveguide; "serrated" waveguide; spiral waveguide. For a
spiral waveguide the author considers separately the cases of a-011d
cylindrical and hqllow cylindrical electron beams. A comparative
analysis is made of the various approaches to this problem de9cribed
in the literature.
Card 1/1

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VAYNSHTEYN, L. A., Cand Phys-Math Sci -- (diss) of
wave functions and forces of tl* oscillators of complex atoms."
Mos, 1957. 7 pp (Acad Sci USSR, Phys Inst im. P. N. Lebedev),
125 copies (KL, 2-58, 110)
_3-

VAYNSHTJCYN. lev Allbertovich; ALIKSAIU)ROVA, A.A., redaktor; KORUZXV. N.N..
r
[Electromagnetic waves] lllaktromagnitnys irolrq. Mook-va, Izd-vo
"Sovetskoe radio.' 1957. 580 p. (MIRA 10:9)
(Electric waves)

Y_NS 14
AUTHOR., VAINSETE321,L.A. 109-6-2/17
TITLE: -Th_e__E_1e_o_f_ronWaves in Slow-Viave Circuit Structures. On Non-Linear
Equations for Travelling-:ffave Tubes. (Elektronnyye volny v zamed-
.Iyayushchikh sistemakh. 0 nelineynykh uravueniyakh 1BV, Russian)
PERIODICAL: Radiotekhnika i Elektronika, 1957, Vol 2, Nr 6, pp 688-695 (U.S.S.R.),
ABSTRACT: All results obtained by the author by his works (Zhurnal Tekhn.Fiz.
1956, Vol 26, pp 126 and 141) for a nonlinear operation are general-
ized and the basic equations of the nonlinear theoz7 for travelling
waves tubes are derived. It is shown that the much used method of
successive approximations is of no effect in this case. The forces
acting upon the electron bundle in the case of nonlinear operation
are investigated and the corresponding form,lae are set up. Next,
nonlinear equations are derived in a dimensionless form. In con-
cluBion several questions connected with the nonlinear theory of
travelling wave tubes are dealt with. (With I Illustration and I
Slavi c Reference).
ASSOCIATION: Not given
PRFSZ= B Y:
SUMITTED: 23.7-1956
AVAILABLE: Library of Congress
Card 1/1

VA x/t4~1/v 7,
AUTHOR: Vaynshteyn, L.A.
TITIZ: -Ko-n--linear Theory of the Travelling Wave Tube. Part I.
3quations and the Conservation Laws. (Nelineynaya teoriya
lampy begushchey Volny. Ch.l. Uravneniya i zakony
s9khraneniya)
PERIODICAL: Radiotekhnika i Blektronika,-1957, Vol-II, No-?,
PP- 883 - 894 (USSR).
ABSTRACT: The contents of this article were read at the first
International Congress on Electronic Devices for Ultra-high
Frequeneies, Paris, 1956. The equations of the non-linear
theory of the travelling wave tube operating as anemplifier
were formulated by i;he author in an earlier paper LRef.~J.
Here, these equations axe modified in-such a way as to tbLke
into account the mutual interaction between the electrons.
Only the uni-ditection motion of the electrons is considered,
i.e. every electron moves along the positive direction of the
axis z . The time of the appearance of an electron at the
input to the tube is denoted as t . The -current through the
input cross-section of the tube iso jo and that through the
cross-section at a distance z is J. The equations of the
non-linear theory are expressed by:
Car d 1/5

109-7-?/17
Mon-linear Theory of the Travelling Wave Tube. Part I. Equations
and the Conservation Laws.
dFn i~,Fn VnI (16)
dZ
2
Re SF. - iaWn ),-in(to (17)
al 2
2
n ein(t 0 +8 )dt0
Tr5
in which the functions Fn(;),
slowly-changing functions whose
the author's previous article.
between the n-th harmonic of the
the beam aLnd.- the n-th harmonic
Card 2/5
Jn(4) and to) are the
meaning can be understood from
Eq. (16) gives the relationship
convection current Jn in
F of the wave in the line.
n

109-7-?/17
Non-linear Theory of the Travelling Wave Tube. Part I. Equations
and the Conservation Laws.
Eq. (l?) describes the motion of an electron having-the initial
phase to : here, the lefthand side is the acceleration and the
righthand side is the force (in dimensionless units) acting on
an electron. This force is composed of all the harmonies of the
field. Finally, eq. (18) permits the calculation of the harmonic
of the convection current in the beam, provided the function
_&( to) which describes the lorced motion of the electrons is
Ichok, The equations can be referred to as the non-linear,
integral7differential equations since they contain the integrals
of to and the derivatives of Z (which is the length co-ordin-
ate). The initial conditions to be fulfilled by these equations
are:
= 0 and Fn = An at 0.
C9 t
Equations (16) to (18) can be used to determine the laws of
conservation and convers~o'nlof energy. The laws are derived in
two alternative form one is given in a fixed system of
(;ard3/5 co-ordinates (eq.(268)~, while the other is related to a system

Von-linear Theory of the Travelling Wave Tube. Part I. Equations
and the Conservation Laws.
of eo-ordinates which is moving at a uniform velocity equal to
the initial velocity of the electrons, ~eq-(32)). A method of
taking into account the doulomb force interaction of the
electrons) is indicated.' For calculating the interaction, it is
assumed that all the higher harmonies of the field in the line
can be neglected, in which case, eq. (17) can be simplified
and written as: 2Tr
,)2
C U = Re(Fe- iu) + (ul - Qdt (54)
0
where:
(x) Cr 2sin nx (52)
1T n= n
and:
(;ard4/5 Ul = t I + t1) (53)

Non-linear Theory of the Travelling Wave Tube. Pa3b I. Equations
and the Conservation Laws.
Two alternative expressions for
(.22)) from which the coefficient
cient for the n-th harmonic rn
wb
r =
v0 2
&Jx) are found (eqs. (60) and
I and the,dispersion coeffi-
are found (.eq.74)) where:
(69)
where b is the radius of the electron beam and
initial velocity of the electrons.
There are 2? references, of which 5 are Slavic,
SUBMITTED: July 23, 1956-
AVAILABLB: Library of Congress
Card 5/5
v. is the
and 2 figures.

- I kthis is shown in
Table I and Fir, 1). Fig 2 shows the polarization of tne emitted
radiation as a function of the energy of the Incident aloctrons:
curve 1 (continuous) shows the reaults deduced fr= the oxa~,t Golutior.-
obtained in the present paper, while curve 2 (dashed) Vas obtained using
Borngs approximation. Fig 2 shows tliat the exact solution of radial
equations (without exchange) leads to the same polarization curve a.3 the
results deduced frm Born's approximation. This is in contrast to thf-,
low-energy axetatioa cross-sections which cannot be deduced correctly u!~tnl~
Born's approximation. A6moviledgment5 are aiade to G.F. Druicarev and
S.L. Mandellshtam for their advice. There are 2 figures , 4 tabler and
8 references, 2 of-which are Soviet, 2 translations from. English into
Russian and 4 English.
SUBOTTED: July 21, 1958.
Card 2/2

~4-3000
SOV/57-,")- i0- L/','
AUTHORS: V. A., L. A.
TITLE:
1"oundavy Pi-oblems Vur i t!ollow Cylinder of Finite Length
PERIODICAL: !.'ti,i-nai 1,khnichoskoy rlziki, 19'~9, Vol 29, Nr 10, PP 1177-

ABSTRACT: T110 IN111-L considers the eluctrovwtic putential of an ordinary
lUyeL* 01' charges distributcd -it a cet-iutn surface density over
a hollow cylinder of finitc lune,!.h. f;u(--h a cylinder may be a
piece of a round tubing. The c)f* the study is to develop
a general method of solution of equations for electrostatic
problems giving the relationship bctw,:f--n the surface density and
its potential in conducting c~lindQi-o of rinite length. Such
ii~
thematical physics, there being
problems frequently occur in
no general method for their solution. When the length of hollow
cylinders is sufficiently big the problem is practically equiv-
alent to a case of solid cylindrical conductors. The paper is of
a highly mathematical nature. A hollow cylinder is represented in
Card 1/3 cylindrical coordinates, an..i a Laplacian equation for the potential

Static Boundary Problems for a Hollow Cylinder of
Finite Length
75324
SOV/57-29-10-1/13
V. of an ordinarylayer of surface charge of density S is
written. It is stated that this equation may be reduced to
an infinite number of linear equations, if the known function
V. (z) may be resolved within -L O, and to the solution of which the iterative method may
be applied [Ref 31. The method discussed in the paper may also be -
applied to the solution of electrostatic problems. The difference
Card 3/4 between this method and the one proposed in Ref 2 is that in the

Symmetrical Electrical Oscillations of an Ideally
Conducting Hollow Cylinder of Finite Length
ASSOCTATION:
SUBMITTED:
Card 4/1~
75'325
SOV/57-2)-10-2/1-0,
latter the density of the electric charge on the surface of a
hollow cylinder was represented by a series each member of
which showed absence of a requirement for a charge at the ends
of the cylinder, while in the presently proposed method the poor
convergence of the series signifies that charges are being concen-
trated at the cylinder ends. The ends of the cylinder have effect
only in case of short cylinders (L/a -- 11). When long cylinders
are being considered (L/a'~~ 1), the proposed method may well be
used, For large values of kL this method is cumbersome. In such
a case, if the antenna vibrator is thin (ka