SCIENTIFIC ABSTRACT LEONTESCU, A. - LEONTOVICH, M.A.

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• Collection: Scientific Abstracts
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• Document Creation Date: November 2, 2016
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• Sequence Number: 3
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

TURCU, Gr.; TEITEL, P.; BRATU, V.; ZAHARIA, M.; LBONT-r.SGU#- A,
Erythrocytic biochemical lesion rendered evident bj radioactive
phosphorus. Studii rmr-- biuciiimle 6 no.1:97-108 163.
1. Laboratorul de biochimle si izotopi radiactivi, Centrul de
hematologle, Bucuresti.
4~

rho. N. Lemmm P PoMici, and V. Piopovid.
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with vhcm. witntances am repcited, UecxPt*-"cmMQdc
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41vidod'with different. vo~Wks of wzter chestoutIrrIts
014,02xi . Them (oUow!j:t wtt4 kIUm wat ustd, 2.4-D.
JUM-4 "ters a( 11,4.D). 2,4-D ethyl sad h-ityl cAtezo.
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-- - --------

LEONTIEV, N.F.
Type of adkinistrative, economic, and informative map or a region.
Probleme ge,og 9j27-34 162. (publ. 163)
. 'w

MICKIEWICzp Leonid; LE
A case of a live parasite in the crystalline lens in min. Klin.
oczna 32 no.109-62 162.
1. Z K2iniki Xursow Doksztalcajacych dla Lekarzy Kiercwnik: doe.
L. Rickiewicz przy Katedrze Chorob Oczu Kazachskiego Inst~tutu
Lekarskiego Kierownik: prof. W.Roszczin.
(FILABJASIS case reports) (LENS CRYSTALLINE paresitol)

MICKIEWICZ, Leonid;.LEONW,~WA, Marija
Contribution to the surgical technic of shortening the muscle by
means of folding in strabismus. Klin. oczna 32 no-4:341-3/,/, 162.
1. Z Kliniki Okulistycznej Kurgow Spocjalizacji Lekarzy Kierownik:
doe. L. Mickiewicz przy Klinice Chorob Oczu fazachs';-,iego Insty-tutu
Lekarskiego Kierownik: prof. W. RoBzczin.
(STW,ISMUS) (OCUL0140TOR InScIES)

AID P - 5477
Subject USSR/Aeronautics - maintenance
Card 1/1 Pub. 135 - 23/29
Author Leontovich, A. G., Eng.-Col.
Title From the test stands to the test panels
Periodical Vest. vozd. flota, 2, 85-86, F 1957
Abstract The advantages of using the light-weight test panels
instead of bulky test stands when checking the radio-
technical equipment of the aircraft are discussed by the
author in this article.
Institution None
Submitted No date

VILIYAMS VIYUr-OV, P.N. [Vliuhov, P.M.]; LEONTOVICH, A.K.
f t,-, -- -
(Le.nt.vyeh, A.K.)
Amplitude anal7zar with a single channel. Ukr. fiz. zhur. 5
nos 5:666471 3-0 160o (HIRA 14:4)
1. Fiziko-tekhnicheakiy institut AN USSR.
(Pulse height analyzers)

GALANIN., M.D.; LEONTOVICH, A.M.; CRIZHIKOVA, Z.A.
Coherence and directionality of the emission of a ruby optical
maser. Zhur. ekspe i teor,. fiz. 43 nool:347-349 Jl 162.
(MIFA .15:9)
(masers)

DICHVIKO, Pavel Mikhay'Lovich, inzh.;, U=GTjC"j4VjpO%#WsSnzent;
IMVALICRUK#A.V.Sinsbk,VM,-Iigomft; XMSZVICE, .S.M.,tekhn.red.
[Handbook for designers of electric power distribution
networks and substations] Spravochnik proektirovshchika
elektricheakikh setei i lodstantsii. Kiev Gos.izd-vo
tekhn. lit-ry U,,SR, 1963. 708 p. NERA 17:2)

Now
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7777

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AUTHOR: Leontovich, A. M.
TITLE; Absorption Spectra of Crystals of Plutonium Salts.
(Spektry pogloshcheniya kristallov soley plutoniya.)
PERIODICAL: Optika i Spektroskopiya, 1957, Vol.I1, Nr.6,
pp. 695-703. (USSR)
ABSTRACT: The following substances were studied: (1) salts of
quadrivalent plutonium: sulphate PU(304)2.4H20,
nitrate Pu(NO3)4.(l-2)H2O, chloride (axact composition
unknown) and trichloracetate with lanthanum
PuLa(CC13COO)7~ (2) double sulphate of trivalent
PlutOni'm with Potassium XPU(804)2-5H2O, (3) salts
of hexavalent plutonium: plutonyl perchlorate
PU02(0104)2-XH2'0 and plutonyl chloride PU02GI2-XH20.
The dimensions of the crystals of the substances studied
were from 0.03 to 0*5 mm. The method used was that
described by Sverdlov (Ref.1). Measurements were
Card 1/3 carried out at temperatures from 4 20 to - 1700C.

Absorption Spectra of Crystals of' Plutonium Salts.
the theory given in Ref.12. The absorption spectra
of plutonium salts a-re due to degenerate dipole
transitions from the lowest level. (juadrivalent
plutonium sulphate spectrum exhibits the greatest
similarity with the spectra of rare-earth salts. The
splitting of levels by the crystal field in plutonium
sulphate (80 am-1) agrees with theory. The author
thanks M.D. Galanin and M.V* Fok for advice and
criticism, and R. Yu. Deberdeyeva and I.S. Sklyarenko
for preparation of the crystals. There are 4 figures,
3 tables and 17 references, 2 of which are Slavic.
ASSOCIATION: Physics Institute imeni P.E. Lebedev, Academy of
Sciences of the USSR. (Fizicheskiy institut im. 1-.1i.
Lebede-va, AN SSSR.)
SUBMITTED: November 10, 1956.
AVAILABLE: Library of ConL-Tess.
Card -3/3

cal4hys-lhth Sci -- (diss) "Ztv'IY Of
st If j
C,
Spectrmm of 44~4~ of Pry stals of ilutollium 31-a45
r05, 1958, 7 ~4~ (A USS-11. Phys insi iin F.I:. Lobodav).
lns copios. ,\(11 10-56,
4

G&LANIN, M.D., KORBKIN, V.V.,, LEONTOVICH, A.M., SK'RrG1FKrJV, V.M.
AND CPJZHIKOVA, L.A. --- - - - --.
"Coherence, spectra time scanning and pulsations of the ruby laser emission."
Report submitted to the Third. Intl. Symp. on (4uantiim Electronics.
Paris, France 11-15 Feb 1963

GALANIN, M.D.; kEQNTOVICH,_A.M.; SVEMMOV, Z.A.; S14ORCHKOV) V. .N. ;
. CHIZHIKOVAJ, Z.A.
Pulsations in th-3 radiation from an optical ruby miser. Opt. i spektr.
14 no.lzl65-166 la 163. (MIRA 16:5)
(MaEers) (Quantum electronics)

b) -2/
AFF1)671-,Z:',, aMI-1 WC/AFGC/A. F0
_4/, )10056fd3C D4 0 1184 7r851
ACCESSION NR: AP306JI09 S
AUTHOR: Korobkin.- V. Le-ontovich, A, -M.
fly
TITLE: Coherence and time scan of radiation spectra of ruby~_~aser
SOURCE: Zhurnal eksper, i teor. fiziki, v. 44, no. 6, 1963, 1847-1851
TOPIC TAGS: laser emission coherence, laser radiation spectra, lai;er mode
excitation, ruby lasers, axial modes in ruby
ABSTRACT: An experiment has been conducted to determine the time de-
pendence of mode excitation under pulse operation. For this purpose, the
coherence and time scan of output radiation were irivesiigated in ruby crystals
at room temperature and -165C' The coherence was investigated by observa-
tion of the interference pattern with a Michelson-type interferometer in which
one of the mirrors was replaced by a prism, so that the mirror and prism
images were superimposed on film. The interference pattern observed on the 10
film confirmed that each mode was coherent with respect to the others and
C.rd 113

propagated In different directions. Contrary to A. L. Schaw1ow and others
(.A. L_ Schawlow, C. H. Townes. Phys. Rev., 112,.1940. 1958, A. G. Fox,
T. Li. Bell. Syst. Techn. J., 40, 453, 1961), this supports the view that the
wave front Is not a plane wave. The coherence of radiation emerging from
different points of the ruby face was demonstrated by inserting a lens at its
focal distance from the face, an arrangement which produced two images o%'3r
the entire face superimposed on the film. The interference phenomena were
best observed at a pumping energy only slightly above the threshold (not more
than 2%). At higher energies the pattern became indistinct. The time scan
showed a discrete number of directions diverging at a general angle up to 30
P
to 40 min. At a crystal temperature of -165C the scan displayed.a, nearly perfect
regularity of oscillation pulses, and the discreteness of directions of propaga-
tion was less pronounced. Oscillations appeared at several frequencies, ap-
parently in axial modes. The room -temperature time scan of the spectra, car-
ried out by photographing the emission from a vertical strip of the face, showed
that 5 to 8 axial modes were generated simultaneously at a spectral interval of
0.3 cm-~. At -165C, 3 to 4 axial modes were generated with high background V/
Card 2/3

L 10726--63
ACCESSION NR: AP3003109
frequencies. All points of the face were found to emit at the same frequencies,
The 30- to 40-min magnitude of the overall divergence, which cannot be ex-
plained by optical inhomogeneittes of the crystal or by dispersion of light in it,
is thought to be caused by a change of the refractive index of the crystal within
the R, Hne owing to a change In the population of the upper'level. Modulation
of the optical length of the crystal during the pulse might also lead to modula-
tion of the emission frequency, which would explain the presence of background
radiation between the axial modes observed a. crystal temperature of -165C.
"The authors express their thanks to M. D. Galayin for discussion, V, N.
_-_--Lukavin for making the optical parts, and V. N. Smorch~oyfor making available
the laser device, as well as toA. P. Veduta for helping In the work. " Orig. art.
has: 4 figures and 1 formula.
ASSOCIATION: Fizicheskiy institut im. P. N. - Lebedeva Akademii nauk SSSR
(Physics Institute, Academy of Sciences SSSR)
Sly-BMITTED: 19Jan63 DATE ACQi 23j,j163 ENCL: 00
SUB 90AE: 00 NO REF SOV: 002 OTHER! oo8
C

ACCESSXON NR: AP4012525 S/0056/64/046/001/0071/0079
AUTHORS: Leontovich, A. K.1 Veduta, A. P.
TITLEi Mode excitation and explanation of the divergence of radia-
tion from a ruby laser
SOURCEs Zhurnal eksper. i teoret. fiz., v. 46, no. 1, 1964, 71-79
TOPIC TAGSt laser, ruby laser, natural oscillationp resonant mod%
resonator, plane parallel resonator, spherical resonator, laser
spike, spike mode content, laser beam divergence, ruby homogeneity
ABSTRACT: The natural modes excited in each spike for a ruby laser
with plane parallel mirrors was investigated with a high-speed
SFR-2,Ucamera operating in the "time magnification" mode. Rubies 5
cm long and 7 mm in diameter were used, and the distances between
mirrors ranged from 5 to 49 cm. Simultaneous pictures of the radia-
tion distribution in the near and far fields show that the excited
modes correspond to those produced by a spherical rather than a
plane-parallel resonator. Thi's phenomenon is attributed to inhomo-
Card 1/2

ACCESSION NR: AP4012525
geneities produced in the crystal during its growth or by uneven
heating by the_pumping light. The inhomogeneities reduce strongly
the region of mode excitation,-decrease the distance between nearest
maxima, and increase greatly the divergence of the beam. If the
crystal is not of prime quality, scattering increases the divergence
further. "The authors are deeply grateful to M. D. Galanin for
discussion and constant interest in the work, &~,i to L. A. Vayn-
shteyn for discussion." Orig. art. has3 5 figures, 10 formulas,
and 2 tables.
ASSOCIATION3 Fizicheskiy institut im. P. N. Lebedeva AN SSSR
(Physics Institute, AN SSSR)
SUBMITTEDs 12aul63 DATE ACQs 26Feb64 ENCLs 00
OUR 00091 pit No-twit NOVI '004 011
Card 2/2

i TI
D.) L"MiTOVIall, A.
"I'adiation oropertier, of a x-ub.~ cr-ystai
The hinelics of generation at roor., Lemperaturc and lo,.! temperature to
-165C) and p~.-o ortics of radiation coherence in a rtly lazer vere investi-ai-.00,
p
Report presented to the llt:h Conference on Luminucence (,',Iecular
lmd-nescence and lumincocence analysis) 4"insk, 10-15 Sent. 1962.

LEONTOVICH, A.M.; VEDUTA, A.P.
Excitation of modes and explanation of the divergence of the
radiation beam from a ruby lasei-. Zhur. eksper. i teor. fiz.
46 no.1;71-79 Ja164. (MIRA 17:2)
1. Fizicheskly institut imeni P.N. Lebedeva AN SSSR.

i97W
ACCESSION NRt AP5004377 6 5 0 1 0086
c
AUTHOR: Korobkin, V. V,,; Leontovich, A, H.1 Smirnovaj M. N. ~j
TITLE:: Excitation- of modes-and the kinetics of-generation in a ruby
later wlith a confocal re sonat or
~SOURCht Zhurnal 6keperimentallnoy i tooretitheskoy fLziki, v. 48
;no. 1. 19659 78-86
TOP I C. STAGS ruby laser, laser generation. generation kinetics, mode
~'Iex-*Ltatlofi:
AB3TRACT: An investigation it made of mode excitation in a ruby
laser with a confocal resonator (filled with onternal spherical die-
lectrLc coated mirrors) under various generating conditions. The
.mirrors had radii of curvature of 30 or 50 cm; the distance between
--them was _60-orl-O-0--c-mo _ The-polLshed ruby rod (0.015% Cr) was 75 mm
along, 10 mm in diameter, end had'-pl-ane-pars-Ilel-ends-- -The-~rod W a-.-
a
puisped-by an IFK-1500 xenon lamp supplied from a 900 pf bank of con-
-ne-rgy 3 k' (threshold) to 4 kj* The
danseza_;_the_Vump1ng_t
7-H _41-d --d Us -tr tutf 9 L-6 tte'ra--i-w7the---resonato~
C
A 12
ard

L 2695o_65
ACCESSION NR: AP5004377
;an SFR-2H photorecorder; an IT-51-30 Fabry-Parot interferometer with
,dielectric mirrors was used in obtaining the emission spectrum. Co-
:herence..was studied,from the Fraunhofer diffraction through two open-
ings 0,3 mm in diameter and 11.5 mm apart on a diaphragm placed behind
.the resonator mirror. The emitted radiation was found coherent throug A
out the entire resonator, I.e., in a confocal resonator modes are ex-,
cited simultaneously in the entire resonator. A great number of
:transverse modes are excited under regular conditions with damping.
Fewer modes indicate a less regular generation. In order to acn;z-;.%
.regular dampe.d generation, conditions for the excitation of a great
number of low-Q modes must be proiided, and the higher-Q modes must
have a lower volume of excitation. Irregular generation is achieved
.essentially when modes with different Q are excited* Orig, art, hast
-'3--formulsks--and 3 figures.__
JYK)
ASSOCIATIGN i FIXIcheskly Institut Ims P# No Lebedeva Akadeizil nauk
SSSR (Physics Institute# Academy of Sciene",SSSR)'
SUSHITTEDs OeJuI64 89CLs 00 SUB CODE: P_ C'
NO REP SOVS 008 OTHORt 009 ATD PRESS.- 3189
Card 2/2

L'2
5283-65
-M7WA-(T0-2/FMA(h) -'Pn4/POA, f-h/PiA/Pl-h/Pab uPW WOWN
ACCESSIOU N R.0 AP50043T6 S/00 i646/oolt008TIG09
AUTHOR: Veduta, A. P.; lotontovich, A~ M.; Smorchkov, V. N'
TITIE: Changes in a ruby I er resonatorldue to heating by the pumping source
SOURCE: ZhUrnal'eksperilnen,allnoyi teoreticheskoy fiziki, v. h8, no. 1, 5,
196
8T-93
TOPIC.TAGS., -ruby lase sonator distortion, gas laser interferome-ter, thermal
- I 1~v 1. .
distcatidn v-g."ase-r- -ruby-jaser heating
ABSTPUICT: -An interferometric method- was- used to- study the changes- In the resonator
of a'ruby laser caused by heating by the pumping source. An He-fle grs laser with
emission at X = 6328 X was used as a coherent light source for the Literferometer.
The gas laser, beam, tiansformed into a parallel beam bF means of lerses, was allowed
--to pass througb a semitransparent plate and to strike a pumped ruby at right angles#
The front end of the ruby was 65-85% transparent, the rear end silver coated. The
'pattern set up by the interference f two 0~eams reflected in the resonator was
photographed by means of an PFR-2 Naraqra~ during the pumping of the rut--. 'rhe emis -
s io n from the ruby 'Inner and the scattered pmping radiation were eliminated by
for X - 6328 The ruby rods were 50 and (approximately) 74 w, long and
their-- l4teral--surfacv; -were -polished ---Thq~ Pr 15.00 !a
-punW~p~waa by an IFK- -m. The
Card 1/2.

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L 25283-65
L 2~
C1
AC
ACCESSION WR. AP5004378
--di at ri.buti ont7number,and-shape of the interference bands varied during pumping~
vhicb indicates that Mae total optical length andslisye - of the- resonator undergo-
-considerable changes due to-heating. The nonuniform heating is due to the focusing
of the pumping light by the lateral surfaces of the ruby and the generation of in-
ternal modes in the ruby. Heating of the ruby ro4~s vas proportional to the con-
centration of chromium in the ruby. The energy absorbed by various ruby rods during
pmping and the efficiency of the pumping source were calculated. The theoretical
~nd experimental results varied by a factoi of 1.5-2. The discrepancy has not
bUt.
it- 10 --suggested that
yet-~.been invest gat4jI -it might-be due,to the absorption
-of - 1141v in Ahe ~~M.eta8tabje__Lqtate_.,or- to 7ax6it0ition ~of intema~ modee L uhich reduce-
-deLcreasethe times-in the eic ted tate-.
the laser pover output and life Orig.
has: 4 figures and I table. [YKII
ASSGCIATIONs FlAcheskly inotitUt im# P,'N. LebedevaAkademii nauk SSSR (Institute
of Physics, Academy_of Sciences-, SES,H)
EXCLs 00
SUBMITTED: 08jun6h BUD CODE: g r,
NO REF BOVt 009 MIM t 004 ATD PRESS 3184

jr.

EM(k)/ wro)
Wit*
h, I JP(c)
UP/0056/65/649/00*010/0013 -
t
_[t_ T,-
_ir
Idii"
0*1 -teoreft h 1' IJd',:;av. W.: 196
_021 'i frequency
r. xiode at"
iv or Tosons; ori._~resonato 1)
W;
iAW us"' OA Aigato the -hlgh~. ency
We
none-_0 r-
:iaodulafto~t 6:fliftvi y -the-earlier-Investigations
in-
of-,this-.- frect',thorough stAuW- made - - '~i
e e was -&- -of - the -tonnection between the observed
modulation frequency aid the frequency theoretically calculated on the basis of the
kn6wn resonator dimensions and configuration. The present study was made at fre-
quencies lower then c/2L1 (c - speed of light, Ll - resonator optical path length),I,
using a semi-conftweal- resonator consisting of a spherical mirror (100 - ca radius)
w,.4 a Mt mirr&r in the focus of the spherical one. The distance between mirror
was 50.cm. The optical system used for the measurement was similar to that de-
scribed by one of the authors (Leontovich., with A., P. Vedutaf ZbMF V. 46# UP
Dlikerinduation between the angular modes was effected with a special dia-
phrqx placed Inside the resocators The order of the transverse mode increased
- ---- ------ - --

7-,
till fF-T~
A
WK;.
-W
K
6225L&
with in addition to the confocall mirror eyetemp
-jGtjjQtj*~(*tjng&- deposited-directly--on-
AP 'As
Of, I.
11-40
'tait al - MON
A)idids hi .
4 AlwC
ey
between -the- differem
nifty . tIhe d.latort-ton -- du -inhomoge-
modes. The beat frequency in greatly affected by a 0
neities produced in the ruby crystal by heat. The most likely beat frequencies are
estimated on the basig of 9,4 analysis of the most jAkely combinations of longitu-
dinal and transverse modes excited simultaneously In the spike. The bandwidths of
the indiv1duA1 'nodes . were ettimted from the eat frequencies and found not to
exceed 2 WA. "The-authois thank M. D- G-AdNfor continuous Interest and a d a-
cussion.- orls. art. has-: ~ figures and 5 formulass 1021
ASSOCZATIONs'. hitchaskiy Lastitut im. P. ff. Lebedeve Akadadi dauk GSSR (ftii-cs.
Institutep A~adezW or sciences, BOSH)
MIUM I 26Tiec&I a(M. 00 BUD CODE:
M5,
No REP SM. OTHERt 013 ATD PRESSt.
Card-".,

KOROBKIN) V.V.; LEONTOVICH, A.M.
Beats between tyr,,es of oscillations moder) in a !as,-r.
Zhur.eksp.1 teor.fIz. 49 no.1210-15 J1 165.
(MIRA 18:i)
1. Fizicheskiy histitut irriani Ipbodeva All SSSR.

L 1618-66 IWA(k)/FBD/M(1)/34P(e)/M(m)/EEC(k)-2/EWP(i)/T/alp(k)/ A(m)-21 A(h
EW W
f WG1WH
ACCE SIO %.* "5023361 UR/0020/65/16h/OIDI/0075/0077
'6 621.375-8:539.1-073.3
AUTHOR: Gprbunkov, V. M.; Korobkin, V. V.; Leontovich, A. M.91
TITLE: Illumination of a bubble chamber by means of a ruby eer
)I
SOURCE: AN SSSR. Doklady, v. 164, no. 1, 1965, 75-7T and top third of insert
facing page 76
TOPIC TAGS: laser, ruby laser, laser illuminatoPliubble chamber
ABSTRACT: A concentric-reaonator ruby laser (A - 6943 R) was used to illuminate
particle tracks in a bubble chamber. The experimental oetup is shown In Figo 1 of
the Enclosure. The reconator consisted of dielectric-coated, concave spherical mirL
rorswith a transmission of %,l% and 50-cm radii placed at a 100-cm distance. The
ruby rod, 75 mm long and 9 mm in diameter, was pumped by 0.1-j pulses approximately
0.6 msec in duration from a 4-kj IFK-1500 flash lamp. The laser beam was unifo
distributed with an -,u2* angular divergence wbich was magnified by an f - 50 mm lens
to 20'. The experiments were carried out on a bubble chamber model consisting of
a plane-parallel plate filled vith air bubbles which corresponded to a 25 cm hr-
drogen bubble chamber described elsewhere (T* D. Blokbintseva, et al, Pr!bor7 I
I Card 1/3

L 1618-M
ACCESSION NR: AP5023361
tekhnika eksperimenta, no. 5, 51, 1962). The test object T was placed 50 cm from
the lens 0 and was illuminated by a concave spherical mirror Mo (radius of curvature,
65 cm; diameter, 23 cm) placed 70 cm from 0. The laner-illuminated bubble tracks I
were photographed ftom a distance of %50 cm with an f = 53 mm camera on a film with!
a 70 line/mm resolving power. The excess light was filtered by a combination of an
interference filter at A = 694 mp with a 30% transmission and a neutral filter with~
an 11% transmission. The test object was photographed 5 times at different camera
angles. The results indicate that the use of a laser illumination sy6tuem without
a filter makes it possible-to record bubbles up to 0.06 mm in diameter in hydrogen.1
Small bubbles in larger chambers (e.g., Wilson's chamber) can be recorded at higher
generation energies. Recording at reduced energies can also be effective in cases
where low-sensitivity, high-resolution film is used for better contrast and accuracy .
Orig. art. has: 1 formula and 2 figures. [YKJ
ASSOCIATION: Fizicheskiy institut im. P. H. Lebedeva Akademli nauk SSSH (Physics
Institute, Academr of Sciencea SSSR), Moskovskiy filiko-tekhnicheskiy Institut
cow Physicotachnical InstLtute)
summr: 15jan65 ENCL; 01 SUB CODE: ECI"
NO REF SOVi 005 D=Rj 003 ATD PMS:,Yoy
Card_ 2/3_,___

L 1618-.66. ......
ACCWSION NR: AP5023361
ENCLOOSURZ: 0111
Lens
.:Flash
Ifv! -jec
Neutral,filter I:
v In ertmience~ filter
0
Wirt.
Fig. 1, Diagram of systems for illumination and photography
of bubbles
1;4!4- 3/3

L 214-7-66 T r (r ?r
_37 ) -3
.'ACC NR: AP6011498 SOURCE CODE: uWo386/66/oo3/oo7/o3ol/oN3
AUT)IOR: &9Lobk1jn
~.jt. V._- Le ovic~hA. M.; PoETTj N.; Sh~h~l rL . Ya.
_T_
ORG: I!byoico Institute im. P. N. Lebedev, AcadeTy_i~f Scienqtq._SSqR (Fizichcakiy
institut Akademil nauk SSSR)
TITLE: Dynamics of the field and generation frequency in a giant pulse of a laser
with passive shutter
SOURCE: Zhurnal eksperimentalln(7y i teoreticheskoy fizihi. Pis1m v redaktsiyu.
Prilozheniyej v. 30 no- 71 1966p 301-303
TOPIC TWS: ruby laser., laser pulsation., laser modulation, electromagnetic field
ABSTRACT: The authors have previously investigated (zhETF v. 48, 78) 1965) the
dynamics of the field and the generation frequency experimentally for a laser in
the free mode. This paper reports a similar Investigation of tbe~"riics of the
field and the generation frequencies in the giant pulse of a rubykaser with pas-
sive shutter. The passive shutter ured was a call with a solution f cryptocyanine
in ethanol. The initial transmission of the call was 15% for 6943 ~ wavelength.
The call was placed between the flat mirror with reflection coefficient 98% and a
ruby crystal M mm long and 1.1.5 mm in diameter. The second mirror, located 50 cm
from the firstp had a reflection coefficient of 30%. The laser action, initiated
LCard 113

L 21,'~C-66
ACC NR: Ap6o:Ll498
on the end face and on the 30% mirrorj, bleached the cryptocyanine solution and a
giant pulse developed. The rulse energy was 0.5-0.8 J and the duration -wus 12' tb
15 nwcEt the half-power level. The time sweep of the field pattern and the time
spectra of the generations were with the aid of an electron-optical converter , EOC,
operating in the slit-scanning mode and providing a resolution of 0.5 nsec. Photo-
graphs are presented of the scanned generation field on the end of the crystal, of"
the development of the generation field in the far zone, and the time sweep of the
giant pulse as observed with a Fabry-Perot interferometer. The results show that
individual small regions, spaced 0.3~1 = apart, are in operation on the end sur-
face. In each such region is observed a pulse of duration 1.6-4 nsec. The sub-
division of 'be generation region into individual sections can be attributed to
the operation of higber-order modes and to the inhomogeneity of the crystal. The
beam divergence increases in time from 1.2-1.5' to 200, and this variation of the
field must be taken into account in calculations of the power of the field at the
focus of a lens. The lasing frequency shifts toward the violet side during the
course of generation. This shift amounts to 0.012-0-015 ciTI, and the line width
at each instant is -0.01 enfl. The observed change in the generation field of the
giant pulse of a laser with passive shutter is in good qualitative agreement with
i'the results of the the"ical paper of V. S. !Aokhov and A. F.- Suchkov (ZhW v.
__ '_ 6, 3966)_ --i&ich pertains to-the-ii-ie' of instantaneous Q.;switching and-not-
0, no*
5
Card-2/3

L 2i43r'~-66
ACC NR: AP6011498
to the case of a passive shutter. There are no calculations an yet for passive
shutters. The Lhange in the generation field is evidence of the change in the
transverse of the mode Index from low values of the order of 1 to a value of the
order of 50. If the axial index does not change, then the Increase in frequencyo
,kO.3 c91, which Is larger by one order of magnitude than tbo measured value 0.02
enfl. The cause of the measured frequency shift is still unclear. The authorB
thank M. D. Galanin, V. S. letokhav, and.A. F. Suchkov for discussions. Orig.
art. hi-a'-3 figures, [021
SUB CODE: 2o/ sm DA7E: 22Feb66/
ATD PRESS: q1-
licard 3/3
onin. REF: oo2/ om PxF: ool

- - -L --- 12022-66 -- - W(-M) - -IJP(C-)
ACC NRs -AP-66659-32 SOURCE CODE: UR7626676515MM2/0039/0039
r C t--
AUTHORS: Galanin, M. D.; Gorbunkov, V. H.; Delones N. B.j Korobkin, , V';
Leontovich,_&,-&j Sa-it- 1. S.
0R0: none
TITLE: A method for illuminating particle tracks in chambers or the sual
observation of tracks. Class 219 No. 176332
SOURCE: Byulleten' izobrateniy i tovarnykh znakovs no. 22# 1965, 39
TOPIC TAGS: lasers particle track, coherent liGht
ABSTRACT: This Author Certificate presents a method for illuminating T'hL particle
tracks in chambers for visual observation of tracks by pulsed light radiation. To
increase the accuracy of the physical experiment, an optical quantum generator (laser)
with confocal resonators is used for illuminating.
SUB CODE: 14/ SUBM DAT& l8Jun64
Card 1/1

s/32C 16- /145/cG3/CO4,/Cl 33
Bl 72/~l
Looltovich, An.
A.
-11 T 1.1 T Existence of unbounded o.-c-*I'a"C tra-eatories in a bill'ard
T, r 0 u I r-'a
~.'Kadomi~~a nauk S-337,7,. DOI'lady, v. 1~,-5, no. 3, 19"1 523-52'
.110DICLL:
EXT : -2 h emovcmer.--.3 of snhere on z, p1pte of infinite lerL--Th. is
consideredt thiss 2-11---t-- bCUraCL on one --Jdc by the x-axis and on the
ot'her by a (I. f(x)>O, .-;,(0) - 1,
!"x) for Ix: for x >G, fl(x)>-O for X40;
3. f"(x) >0 for t.-I > 1.1he t~:-,;~cctorivz ar,- opon poly6ons- At the
boundury thu urL-ll 4c oqual t- an,-,Ie of cmer-ence. A
tr~-jectory Ir C-- ~,,=,,Icd docz into tr.,~ striP
x :5 X - X - co < co 71 -3 Calle, ot-c4'--tinc if it intersects
1 2
the Y-aXiG L:. -.00. t -,C: State' for I(X)
n~:. of t4j. Con- -on, a 6 . "
under which trajector-'--o cxir.-. L..-Ad for which the
Cases A - 0 >C, n,:ca to be distin-u .-.shod.
Card 1 /2
0

S1020V621143100310051029
B112/B102
AUTHW: Teontovich, An. M.
TITLE: Stability of the La&-raneian periodic solutions of the
restricted three-body problem
PERIODICAL: Akademiya nauk SSSR. Doklady, v. 143, no.,3, 1962, 525 - 528
TEXT: The stability of the equidistant solution of the restricted three-
body problem (cf. J. L. Lagranget Oeuvres, k, Paris, 1673, p. 272 - 292)
is investigated. The first approximation stability condition
2 > 27 m m of E. T. Whittaker is shown to be valid exactly:.
(ml-+ m2) *1 2
There are 6 referencea: 2 Soviet and 4 non-Soviet. The English-language
reference isi J. E. Littlowoodq Proc. Lond. Math. Sec., J, 2y no# 35, 343
(1959)-
PRESENTED: November 11, 1961, by A. N. Kolmogorov, Academician
SUKUTTED: November 10, 1961
Card 1/1

KISELEV, Gennadiy Yelliyevich; OSTAMMU, V.I., kand. biol. rauk,
red.; MMAZEV, A.A., red.; VORODYEV, DX., red.;
LECUTOVICH -Gji.... kind. arkidt. nauk, red.; SAUDA--t-G,
'AIROVA, V.N.P
r ed.
[Floriculture] TSvetovodatvo. Izd.3-, Ispr. i dop. Mo-
skva, Izd-vo "Kolos," 196/,. 983 p. W.LtA 17:8)
1. Starshiy sadovod dotanicheskogo sada Botani--hskogo In-
stituta im. V.L.Korarova (for Knyazev). 2. Sta~shl- sain-
vod Tresta obl'yedinennogo L;adovodstv.-. (for Vorob-yev, Riga).
3. Direktor tekhnikuma zelenogo stroiLeltstva, Kharlkov (for
Leontovich).

UM/Geology Jal/Aug 48
Stratification
Petrology
"The Study of Mddle Carboniferous Fusulinidae of the
SaMtor Volga Region," F. S. Putrya, G. Ye. lAontoriob
36 pp
,,*BYul Moak Obahoh Ispy PrircKiy, Otdel Geolog"
Vol XXIII, No 4
-Z
"-Describes those Foraminifera, of Saratov Volga region
~Kladle Carboniferous deposits, which are the most
-,important from a stratigraphic standpoint. Describes
28 species of Fusuliaidae, eight of which are new. On
basis of examination of vertical distribution of
4M 17/49T%6
USM/Geology (Contd) Jul/Aug 48
Fasulinidae, -,orrelates individual sections with
each other and also with other areas of the Volga
region and the eastern Donbass.
17/%9A6
>4

24. AC05/A3DI
vt..!j~joo rreas, xf._tl-n wftml. P-~Ixm. 1960. %-. 6. P. 30, 0 13!k2
AUDKW. ftnal'plk- 9-9. Z-711it-, P.---
3--~. Uch-7 1- ".3
Akhtz* ; A I Lie V
TTSA, A 30.5-14- L--.- Pt~ot-
FmcInCA- ?r. AS"OU All m I-. at_.
As mo~=. 1959, Pg. 5-15 Xj"..
mm, MW of t.-,. P-soal.ar ctwl,.
so& thO doo LIP of & lte~ Protoo &z1*14rs'- wltll. & drif- t~%# at S Me, -#rc7
Is I ... rLbod, th. -I.rot- - -"tr%xtd in tit.
V.t AX VkrW of Ptq.tll ~f U. AS T!-.
puts-loo" dt. or the sotolarat- aro th* folmingi L-,* *Porat:wal wee-a :-4'~
1. A. 215 cm; the "at.- -rcy 1. 1 I-Alt or -to 1.
l.kA6.B mas %b. ".mhr~ ph- ~C;: --q%n of -uta fL"-.
4." as; that of too Isms 1. 16.M the law--, or tow first &w
out 1A
I". of th. Iss. 1. 11.190 -; th. of, *he f'l--. dr-ft
Is 0.145 MsI tmt or um Imt me 1. 32.91~c5 om. Aitoe.-~vr. -~. o'-t- Cf lr!ft
tobso is 13D. that of trus hk:.f tuts$ to 2; t." ffWao ~l ~ls
witn the latter. At th. sotroo' :t1f -1-Y drift t-. fT-L-4 grIds V, r" .1
Blot^ of tl.Wt- - or O.C-1 a-, tztal C-rt~
wr adttm--: ~Ujt* drift -~%- ILro installed wl'Z%'-n --re
..'s of -wp- To%-Jh. ".-at- to W. 1,44.9- '7~4
16-f- prtsm. Th. -= 1. rod rroo 2D h.r 1. Th. Q-fa,--
ra~ur to th. load i at." 1. j.aa to 6.5.iZ in -: -t!;tt
Pceewr tooled for parUclas U t-~ rated attera --its -,c 1.2 P%e. An
.I- tros"'Lle xaoamto~ etwratim by pasee with #-.A ;-412e durat-~ 5MA;
.% boot I Ma ~t I.T*"' Ity ,A 1.7 - 1.1tg. .- - P---
rrl~lp-l ,Ir-lt se-d th- d--tv of tn- IvL'e%t-!
AWOMTIM, Plz.-Ukh.. in-% AN C~--SM
Arad of
A.P. Pat-7-
"""I'ator Is the fail tr-""U- or th' 'rg:..'
CArd 2A

GRIGORENKO, V.G. [Hrykhoranko, T.H.); LEONTOVICH, X.A. (Leontovych, K.A.)
Multi channel television installation. U1Kr.fiz.zhnr. 5 no. 3:
423-426 MY-Je 160. (MIRA 13:f)
1. ?Iziko-tekhnichaekiy instiut AN USSR.
(Television)

20695
S/120/61/000/001/033/o62
E194/Ei81j
AUTHORS: Stupak, V.G., L ontovich, K.A., and Zalyubovskiy, I.I.
TITLE: A High-Speed Time Convertor
PERIODICAL: Pribory i tokhnika eksperimenta. 1961, qNo.1, pp-109
and 108.
T EXT: This instrument o n assess the time Lnterval between
impulses in the range 2 x 10-9 to I seL. This problem is
frequently encountered in the study of nuclear decomposition, in
the investigation of short-lived elements and alac in studies on
neutrons. Time reckoning commences from application of an
impulse to the control grid Al (LI). The flip-flop oscillator
J12 (L2) converts the impulse into one of standard wave shape and
amplitude. After differentiation the standard impulse starts the
variable line voltage generator based on the valves n 3 6 (L3,-6);
here L serves as a charging resistance for tha capacizances
C18-23 ISIB-23)' As the pentode current is independent of the
anode voltage a saw-tooth wave-shape is obtained with an amplitude
up to 140 V with a high dogree of linearity. This aaw-tooth wave-
shape is then applied to the addition circuit,
Card 1/2 . )17 ~8 - J13

~-35972-66 rA71
ACC NR, Ap6ol6o4l ttj)
SOURCE CODE: UR/0185/66-/-o-l-l--/*-O--O--5-'/-O-ll-9-i/o496l,
AUTHORS: Hryhorenko, V. H.7',:--G.rigorenko. V. G,# Dushyn, L. O.-Dushin,
L. A.; Leontovych, K. A.--L,e2ntovich, K. A.-
ORG:' Physicotechnical Institute, AN UkrSSR,_Kharlkov (Fizyko-tekhnichy
instytut AN URSR) r
TITLE: Microwave interferometers with amplitude modulation
SOURCE: Ukrayinalkyy fizychnyy zhurnal, v. 11, no. 5, 1966, 491-496
TOPIC TAGS: interferometer, amplitude modulation, phase measurements
P.Alt9 5 r- r
ABSTRACT: An analysis has been made of problems in designing micro
wave interferometers with amplitude modulation, which permit transfe;-~
ing the phase shift measurement from the microwave band to the radio-
frequency band. A description of possible interferometer layouts is
given. Orig. art. has: 8 figures. [Based on authors' abstract) JNT1
SUB CODE: 09/ EUBM DATE: lojul65/ ORIG REF: OOVOTH REF: 004
Card

SUBJECT: USSR/Mining 12'7-10-23/24
AUTHORS: Leontovich, L.V. and Davydov, S.A., Engineers.
TITLEs On Pyroxylin Application in Open Mines (0 primeneriii piroksi-
l1novykh porokhov na otkrytykh rabotakh)
PERIODICAL: Gornyy Zhurnal, 1957, #10, P 78 (USSR)
ABSTRACT: The authors dispute the conclusions drawn by Starikov, N.A.
at al. in the paper published in the "Gornyy Zhurnal", 1956,
# 12, pp 21-23, about the better results obtained with pyroxylin
as compared to ammonite #6.
These conclusions are considered to be not founded well enough
because the data pertaining to both kinds of explosives were
not obtained under identical conditions.
One Slavic reference is cited.
ASSOCIATION3 Industrial-Experimental Department of the "Soyuzvzryvprom"
Trust (Proizvodetvenno-skeperimentallnoye upravloniye tre8ta
PRESENTED BYt" Soyuzvzpyvprom")
SUBMITTEDs No date indicated.
AVAILABLEt At the Library of Congress
Card 1/1

31735
3/081/61/000/021/062/094
fit -#,/ V0 B138/BIOI
AUTHORSs Grinberg, D. M., Leontovioh, L. V., Ruchkin, V. M.,
Shishkin, A. F.
TITLE: Apparatus for measuring the moisture content of ammonium
nitrate expinsives
PERIODICAL: Referativnyy zhurnal. Khimiya, no. 21., 1961, 391, abstract
21L446 (Bezopasnogii-o' truda v prom-stio~ no. 4, 1961,
23 - 24)
TEXT: The article describes a portable electrical instrument (PZV)
designed for the rapid measurement of the moisture content of ammonium
nitrate explosives and of ammonium nitrate. The instrument aeasures the
electrical resistivity of samples of the substance. This value is a
function of humidity. To calibrate the PEV, the resistivity of several
samples is measured, and at the same time their moisture content is
determined by the oven-drying method. The PEV consists of an electric
circuit for measuring resistance, and a transmitting unit which ir a
Card 112

31735
S108116 1/4DOO/021/06 2/094
Ipparatus for measuring the moisture ... B1380101
cylindrical plaotio container with an inside diameter of 65 mm and depth
of 2T mm, It has two aluminium electrodes in the shape of rectangular
plates 27 mm in length and 10 mm wide. The test substancet in powder
form, is placed in the transmitting unit, resistivity is measured, and the
moisture content is found from the calibrating curve. With the appropriate
calibration, the instrument can be used to measure the moisture content
of various different substances which have high electrical conductivity,
e.g. mineral salts and fertilisers. LAbstracter's notes Complete
translation.]
Card 2/2

~cc NRt--- AP7004571- SOURCE CODES UR/0056/65/049/005/162411630
AUTHORt beontovich, H.
ORG: none
TITLEt Diffusion In a solution near the critical point ot vnpor formntion
SOURCES Zhurnnt ekspertmentnllnoy I teoreticheskoy fizlki, v. 49, no. 5,
1965, 1624-1630
TOPIC TAGSs criticnL point, fluid diffimion, thermodynnmic chnrncterlstic
ABSTRACTS The author uses general equations of the macroscopic
theory of diffusion and the thermodynamic characteristics of the;-
,critical point of a solution to analyze the behavior of diffusion'
near the critical point. Citing tne expertmentn of A. V. VORONEL"
et al. on the logarithmic singularity in specific heat at constant
volume, the author states that analogous behavior of thermodynamic.
functions can also be expected for solutions, but that this ques-
tion has not yet been studied. The present article uses the
.thermodynamic description of the critical point that was cuntomary;
-before these experiments, based on the assumption of the expansi-
,bility of the erprzasion for free energy In a power series In the
Ineighborhood of the critical point, and with the usual expression
'for the free energy of a dilute solution containing the logarithm
o fajoengV_i2trjit Ion * TPerefga, ty author states. the formuln,
obt n by him may no a app ca le n the umne late no18 borhood 0t t
critical point. The article also discusses the question of applying conclusions
on the macroscopic diffusion coefficient of dilute solutions to the Brownian
movement of Individual particles* It to shown that no.conclusions can be drawn
Card-

NRt AP7OG4571
from the vanishing of the diffusion coefficient at tho crIticnI point an to the
diminution of Brownian movements of particleq which are identified only by their'
mobAlity. Orige art* hasi 16 formulas. CJ-PRSS 34,6527
SUB CODU 20 SUBH DATES l4jun,65 ORIG REFS 007 ON REFS 001
Card 2/2

LEOVIOVICH, M.
"Amdamental basis of themodymmic statistics." J. EXDt1. Theoret. Phye.
vol. 2, No. 5-6, 36.5-79 , 1932.

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4 4 Physical Processes. M. Leontowltach. Pkyj. Zr,t.. 4.
0 8: - 3. 1. pp. 33-63. 1933. 'Ito GOvi&~.-Z416 limbsMilly of a furbctxm in g
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Mathematical phystce. Moskva, Goo. izd-vo tean.-toore,.Ait-ry, 1544# Z55 pe

J~ji. CONISaXIWO A C*SIAIN USTOCNI POO SOLV-
OX0 Pau"KNO OF PROVA4ATMW OW RL&Lfedp-
MAUX& It,- W*VW ALOWO Init K4NISI's
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)I.u 4, rAc. dre M. As riimss, Sorit
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dwiftirw tuna"t W Obir ""Ji is much Wiper lb"
meaty W t-km tKin 4"quat at Ike very atart of the
aawlion I'mc AM u# *11. Pon"" WW U. W-W
I Pf11UtM&tQ tKWWWFY CQ4kWk*w *a Ow i X*
.f the earth; wAmtly, &ad this im lbw *Wn-Wea
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the dwist nr runst"t of the earth see InInl-
E04 low lbelfflical OrA hartuatal sun. fftinj-
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k*dn W a disvionowl "Jualfun 64 $bw PAF&kxAi,
tr too The ImIKU44 ut IOW vitakaftag of the DOW
I astratiq of the lionumartold VnAAna kods
directly to the met) 1"WWA WOYI-vandcrth't

LEONTOVICH, U.
3D09
On A CertRin ldelhM of Solving Problems of
Propagation nt Electromunp-1-1 W&WPA alonir the
silt I In A1--1 enninvich. Willi. Arall.
c I ":or
(PAI~p 'I I phyl , vj-,-f~ Vol 8, N*,,
In 1411-lan I Vnmpl,l, 1.~I-r, n( %%hith an
Engli%h summity %%14 alvaiattrfl io 15 ~2 11 1-so
I

on thoo In""
$b1
W4 P. IT
,Vs. 1114 of ahbrh n Vllclt~h
A1.1 fA- in

rtli Is S,lr-- ace,

all
me od o Mbolic patiam
US, 'hya. 10; 13-24 0940)~
:TNL methoeJ wo prqx)-~ed by L,!ontQvirh (Bull, Acad,
"Ci. Uf6s. -_*r' pilys. Ulzvcstia AL-W.-Nauk SSSR] 8. 16-
?2 (104), dws:,v Rcv. 6. 101.
-fit the first sectioti of the
pf .-(,sent rhipvr the of propagation (if c1cctromag-
rietit: wavcs over a plane ~,,arth is mjwatetl sincle th%- con-
-Wer tion -ipcr,
51 -,A in the oriVinal 1); by Lcontovich netxl some
tile result is again the well-know" formula of
Weyl and van der Pol, which now appears as the exact
iatim we -1 e . . -P. V
%aVjjIV&i1.IIa"L TO "Jitic: partiAl difterential
UaTI6tV*'tIh iulfAbIt 1306ida Y Coll(Ifflons, a dl 4
A
*Xtion the Mine lei" w If
b ith a spherical earith i dby_~
pro
-and if.is shown that the metW loads to the ~ipproximatlon
recekly olitainctl (in* i different manner) b Fock CC. R. -
Y
(uowady) Acad. Sci. UR-S
3 49 (N,S,) 46, 310-313 (1945);
tit M_ Rev. 7, 1001.
roe paj,(-r micb.0" On a note of (j~ittified) caution.
Since I tie tilethoil is bast4l cm i,egIccting some of the deriv. -
tives oftlic hi"ficst ortIvI. in t;ie partial difTcrctitial equation
govirrning the prf,,blcm, it. k (Iifficiilt toc-stiniate the quality
OF the approximatirm obtaitted. From tit; point of view
it
is enriouraging to (hat tile ri.-Sults obtained by
Ixontovich mediud for both plane and splicrical (homo-
"Odo eattil agrve iviih rvsults o6taincif by inote reliable.
if triore curnIx-rsome, procesfx't A. Erdelyi.
sciume., Vst~ernntical Reviewa, Vol 8, 140. 3

AL Oft a thpor'= fit tile-11100ty-ot dittrattlunt
7-~
-J~~ap~ Y a Unriolir Suit of gz5r-,-
ca mi to dif u c1loir b
ength- -0. NaO "S It. Z a -Gret.
Ak. 1, Y~ litim, 1, I,1.sIx!r.TC
474-479 (10-16). -!~ia if. -'wglish r ary)
"I'lle pajwl- 016 d ffl-utloll of plane c1crtroll1a;!_
~__Iwoc wavvs throligh lit olle!1ing in a thin platte wrcen of
IxTVect cotiTtictivity. It k irAL 5110WA, fly qn MgUtnent
"5ellitialiv d1w [(I RaN it igh ('i6cililific. Vaju~rs, vol. 4, Cam-
bridge University Vrcsi, 11)(K', p. 324] that the problem can
be strictly.rediwed to thacol tile diffraction of plane waves
pCrnivAllity.
by
'11111 tvif It thew..rcen-ifiertiffe
agrcvillg if) S;Z(., 1,11alic,
ill tile otigimil Irlyb14-ril. 100, ig trat-isforlitcA, on rCpIa,7.irg
flit: clvcli ic wid m;ijJwt;l, ve, tors by~ 11, -E, relliec-
tivdy, ;nir) fit,- pioldem of diffrickimi by a thin peffeoly
I-mid almmi, lit, of all iovustig-Itioll by the
l1rdill, I , T
witillir (if Olis lw~t plijbIvilt ilk (lit, t;jweial (-.LW %iellcre tile
lainma It,; a thin'. e Cff)() I n9
strip are Ow i to giv . crirt it(
it.,atilts enni, Oing diffrattiort through a thin slit. Finally,
r(!,qijlt3 of the a6thor and M. [xviii [Zlitirnal Tech. Fiz, 14,
48t-506 (1944)] zim appl' I to show that, with normally
~iflcidoa wavc..", tlltrr_~;s aju~naflce cfkct~ rcstilting in the
passing of a larRLranimint. of Pnergy, whvn the ntio of slit-
leripth t-a wavclvngth iq sliglifly Ir5i than halfan (xid integer.
E. 11. Unfool (Bristol).
Source,* Mathe 'No
MUCA11 Reviell$, Vol S, 3

mm/7470104 Aug 1946
to x1ectrame4suetic Waves
Nhthematles, Applied
"Balution of the Probiam of Propagation of Electro-
tic Waves along the Earth's Surface by the
Parabolic Equation Method," M. Leontavloh, V. Yok,
Academy of Sciences of USS , Moscow, 16 pp
*Zbur Eksper 1 Teoret Piz" Vol ZVI, No 7
Problem of propagation of electromagnetic waves
along the surface of the earth is solved by the noth
od of parabolic equation proposed by Leontovich.
In the f irst section the surface of the earth is
considered as a plane and the well-known Veyl-vau
1C 4OT98
USSR/Physics (Contd) Aug 1946
d!ar Pol formula is deduced. This formula turns out
to be the emwt solution of the parabolic equation
with correepcinding boxmdary conditions. In the roe-
and section the surface is considered as spherical,
and the resulting fanmila coincides with that ob-
talued by Fok by the method of sunmation of Infi-
nites) which Is the strict solution of the problem.
Stubmitted, 20 Apr 1945.
RAW , 4M8
ton rpv

LEONTOVICH, M. A. and BUNIMVICH., V. 1.
"On the Distribution of the Number of Iarge Deviatiow in Lectrical
Fluctuations," Dok1. AN SSSR, No.210 1946

-Huntmio*h, V~ I., and L~otito~,~hm. A~ Ott the distti-
-
B
47 e number of large oe"a
Bon R th tions in electric

Ofictationt. C,
R. (DAI.
ady' Acad. Sci. URSS (N.S.)
A -
S3, 21-23 (1946),
Statistical propertics of the noise voltage across the con.
denser of an RLC circuit are studied. It N shown b an
y
intuitive argument that if the damping is small the avirage
number of a-values of the noise vottagex(t) (normalized by
1), per un it t ime, is (0) (1,at1r) rx Pas), where Wo is
the proper frequency of the circuit. -It sWutd be pointed
out that (*) and mom gencral results were obtained by
S. 0. Rice and the reviewer (we Rice, Bell System Tech.
24, 46-ISd-(I9A_5); thew. Rev. 6, 233]. In particular. tht
assumption that the if amping-s sinall is redundant inasmuch
as holils for all RI.Ccircuit&
The authors also study the problem of a-values of the
y define as the "broken Ulte
amplitude curve which the
joining the Imaxima of x(9)." The reviewer was, however,
unable to understand the mnection between this definitior
and the subseqjent c-alculat infix, M. K4c.

.5ourcet ema 'Cal ReViOws- Vol No.
Math U

77

11
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I-L, I L C 7,
ItAn'Anti3c;-i:mtif'Lc,' Jook on Tht!r-. ol;,-i., Acs," N ii a::-1 r'
I
'i p P
"Zhurn fekh V'iz" Vol A-VII, No I
The autlior in tliti.- nav!:3ed t),)ok ~'i Df' whic~l
(-it CR centi .ra lo) loor an,( v;i,) )i,.,i z.2.0075 ~;:,I/ia )MU ILL
and liquid bodiev tlso .1,tven.

z A
I1,ONTIO-VICH,
USSR/Physics jul 1947
Waves, Ultrasonic
Absorption
"Absorption of Supersonic Waves In Liquids," P. A.
Bazhulln, M. A. Iosontovich, Academician, Phye Inst
Imeni P. N. Lebedev, Auad Sol USSR, 1 p
"Dok Aked Nauk BSSR, Nova Ser" Vol 711, No I
Discusses recent report by S. B. Curevich which con-
firms that relaxation Ideas on absorption and disper-
sion of supersonic waves, only confuse and complicate
Interpretation of experimental results.
as 6M8

1) IIJ LJ3
i
Li'cr.,--,ry of (,cjn,-rc!-,r!, 1c)53.

LEONTOVICH, M. A,
An introduction to thermodynamics; i
takhniko-teoret. lit-ry, 1951. Igy
textbook. 12d. %., ispr. Moskva, Goo. lzd-vo
p. (51-36~i54)
MR

USSHA~sics - Skin Effect Sep 52
"Differential Law of Intensity of Electric Flue-
F- tuatio= and 7heir Behavior Under Skin Effect,"
T-
r., M. A. Leontovich, S. M. Fqtov, Phys Inst imeni
r,j
Lebedev, Acad Sci USSR
"Zhur Eksper i Teoret Fiz" Vol 23,x No 3, pp 246-252
Under the condition that it be quasi-stationary
the authors indicate the form of the cc--relation
function of the lateral elec field causing inte-
gxwl emf of thermal elec fluctuations, whose spec-
tral intensity is given by Nyquist formula. They
shorw that the condition that spectral intensity
227T81
of integral random emf be proportional to the
active resistance of the conductor is effected by
setting the radius of correlation of the lateral
field very small, in comparison with the radius of
the conductor and width of skin layer. Received
21 MaY 52.
CPR 0. 1. 6 8: 227T81

LEONTOVICH, H.A.
"An 'Experimental Method of Deterining the Coordinates of Barsts of Radio Emission.*
Lbk. Akad. xauk. 86 (1952), 1, 39-42.
.90: Translation- 2524467., 30 Apr 1954.

RYTOV, S.M.; LEONTOVICH, N.A., redaktor
[Theory of electrical fluctuations and thermal radiation] Teoriia
slektrichaskikh fluktuateli i teplovogo izluchaniia. Moskva, Izd-
vo Akademli nauk SSSR, 1953. 231 P. (MILRA 7:2)
(Electromagnetic theory)

MAN', A.H.; ORWV, A.N.; UWXTOVlCH, M.A., ukademik.
Spectrum of vibrational frequencies of the fljzq~lest model of an alloy being
set in order. DokI.AN SSSR 90 no.5:753-756 is 153. (KI-RA 6:5)
1. Institut fiziki metallov Urallskogo filiala I~Ademii nauk 5SR (for Men',
Orlov). 2. Akademiya nank SSSR (for Leonto-ich). (Vibration) (Alloys)
(Spectrum analysis)

OSTLIKHAII, B.T.; LICONTOVICH. M.A., akademik.
~~ -
Theory of strong coupling for meson fields. Dokl. AU =R go ,.6:991-r)94
Js 153. (KLRA 6:U" )
1. Morkovskiy gosudarstvannyy podagogichaskiy institut im. V.I.Lenina (for
Geylikman). 2. Akademiya nauk SSSR (for Leontovich). (Mesotrons)

PROKHOROV, A.M.; BASOV, N.G.; LZONTOVICH, M.A., akademik.
Determination of 0- and*/t- spine of nuclei from microwave molecular
spectra. Dokl. AN SWR 90 no-6:1003-1004 Je '53. (KLRA 6:6)
1. Fisicheskly institut Im. P.N.TAbedeva Akademli nauk WSR. 2. Akademiya
nauk SSSR (for Leontovich). (Nuclear phynics) (Spectrum analysis)
4.

GMIKKAN, B.T.; LRONTOVIGH, M.A., akademik.
On the theor ' - '53.
--~- binding energy. Dokl. AN SSSR 91 no.1:39-42 J!
(W-RA 6:6)
1. Akademiya nauk SSSR (for Leontovich). 2. Moskovakiy goF;udarstvennyy
pedap,ogichaskiy institut im. V.I.Lanina. (Atomic theory)

BOROVIX. Ye.S.; LICONTOVICH, Y.A., akademik.
,,,W- ;7r- -'M
- ~9
gleetrio conduo.tivity of metals In high current density. Dokl.AN
SM 91 no.4:771-774 Ag 153. NM 6:8)
1. Akademiya nauk SM (for LGOntOTich).
(Zleotric conductivity)

LIVIN, X.L.; LZONMVICH. M.A., akademik.
Pttsoiv~ SMIssion sYstems in wave gu!des. Ik;kl.Al SM 91 no.4:807-810
Ag 153. (KLR& 6:8)
1. Akademiya nauk SM (for Loontovich). 2. T~umenskiy gosudaretvanW
pedagogicheakiy institut (for Lavin).
(Wave guides)

ROMBEM, L.D.; LHONTOVIGH, N.A., akademik.
Duplex mirror ultrasonic concentrator. Dokl.AN SSSR 91 n0-5:1091-1094 A4 153.
(KLRA 6:8)
1. Akademiya nauk SSSR (for Leontovich). (Ultrasonic waves)

VITUVICH, V.V.; LEMITOVICH, M-.A., ukudemik.
~, - .1 -. r,
Wide band radio Interferometer. Dokll. AN SSSR "'I ' ~. - - -. j . I ~: -1.
3 j-~
(M,iuk
1. ~;cudemlvu nauk SSSR (for leuntovich).
(Intarferometor) ustrotm.,.~t)

GERSHMAN, S.G.; LZONTOVICH. M.A., akademik.
Interference method in the measurement of correlation factors of stationar7
sounds. Dokl.AN SSSR 92 no.1:33-35 S 153. (KI-RA 6:6)
1. Akademiya nauk SSSR (for Leontovich), 2. lizicheakiy institut im. P.N.
Lebedeva Akademil nauk SSSR (for Gershman). (Sound--Heasurement)

LEGINTOVICII., M. A.
UVR/Physics - Sound, Dispersion of 11 Sep 53
"Dispersion of Sound Velocity in Certain Organic Liq-jids," 1. L. Frabelinskiy and
0. A. Shustin, Phys Inst im Lebedev, Acad 'lei USSR
DAN SSSR, Vol 92, No 2, pp 285-288
Continue experi-nents described by T. lamb et al in "Nature" 167 (1951), and
analyze disscussions by M. A. Loontovich and L. 1. Mandelshtam, ZhETF 7
('10137), to evaluate in what case a noticeable dispersion of sound velocity
may be anticipated. Presented by Acad G. S. Landsberg 10 Jul 53, whom
authors also thank for discussions.
269T105

VILENSKIY, I.M.; AWUICH M A akademik.
Zffect of nonlinearity of the medium on radio waves propagating in the
ionosphere. Dokl.AN SSSR 92 no.3:525-528 S '53. (MLHA 6:9)
1. Akademiya nauk SSSR (for Leontovich). (Radio waves)
(Atmosphere, Upper)

KIKOIN, A.K.; FMROV, G.D.; LZONTOVICH, M.A., akademik.
Investigation of thin films of intermetallic alloys. Dokl.AN SSSR 92 no.6:
1163-1165 0 '53. (MIRA 6:10)
1. Akademiya nauk SSSR (for Leoutoviah). (metallic films)

KOMAR, A.P.; R]MOV, H.M.; LEONTOVICH, N.A., akademik.
I -
Temperature changen of magnetization curves of nickel-zinc ferrites at low-
Intensity (magnetic) fields. Dokl.AN SSSR 93 no.1:19-20 N 15). (MLRA 6:10)
1. Akademiya nauk SSSR (for Leontovich). (Ferrite) (Electromagnetism)

KONIX)BSKIY, Ye.I.; SMOKINOV, N.A.; LZONTOVICH, M.A., akademik.
Yerromagnetic resonance of nickel-zinc ferrites. Dokl.Aff SSSR 93 no.2:237-
240 9 153. (MI43A 6:10)
1. Nauchuo-iseledovatellskiy institut fiziki, Moskovskogo gosudarstvennogo
universiteta imeni M.V.Lomonosova. 2. Akademiya nauk SSSR (Ior Leontovich).
(Ferrite) (Zlectromagnstism)

SALIKHOV, S.G.-, LBONTOVICH, H.A., akademik.
Resonance absorption in metals on centimeter waves. Dokl.AK SSSR 93 ao.2:241-
244 N '53. (KMA 6:10)
1. FizIko-tekhniiheskiy institut Kazanskogo filials, Akademii naWk SSSR.
2. Akademiya nauk SSSR (for Leontovich).
(Blectrowagnetism) (Thermomagnetism)

DZUTYAR. I.Ya.; LZONTOVICH, M.A., akademik.
Variation of the electrical resistance of NI-Kn alloys in a Wnetic field
depending on the composition. Dokl.AN SSSR 93 no.4:637-639 D 153.
(MLRA 6:11)
1. Akademiya nauk SSSR (for Leontovich).
(Nickel-mamanese alloys) (Electric resistance)

MAITDILISHTAM, L.I LBOHTOVICH, M*Ae, skademik; ANDRONOV, A.A,, akademik
Ldeceasedj; LAXDSBXRGf-G-.U-.,akademik; TAMM, I.T3., akademik;
GUR07. K.P., redaktor; SOIOLOVA, T.F.. telrhnicheskty redaktor
[Complete works] Polnoe nobmnie trudav. Pod red. H.A.Leontovicha.
(Moskva] Izd-vo Akad. nauk SSSR. Vol.4. 1955. 511 P. (MLRA 8:6)
(Vibration)