SCIENTIFIC ABSTRACT ZAVADOVSKIY, A.M. - ZAVADSKIY, E.A.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001963920017-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 15, 2001
• Sequence Number: 17
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

Dom
ZATADQVSI=V-~-A-.M4, Im nd -takhn.-nauk
Reciprocal effect of turbine stages on the serodynamic che racterist ice
Evith sxt=a27 in,I;nglish]# Teploonergettka 5 no, B-8-13 Ag 158.
(MIRA 11:8)
1. TSentrall W kotloturbinnyy inatitut.
(Steam turbines)

SOV196-58-8-2122
AUTHOR., Zavadovskiy, !,~didate of Technical Scione.%e
TITLE: The Mutual Influence of Turbine Stages on the Aerodynamic
Characteristics (Vzaiwnoya-v1iyani,re turbinnyld-L stupeney
na aerodinamichesklye kharaktoristlki)
PERIODICAL: Teploonergetika, 19.3.,, Nr 8, PP 8-13 (USSR)
KBSTRACT:A good deal of experlmental work has Ibeen done or, single
..f.-urbine stages but interaction between stages has been
studied less. In order to find cut whether the aerodynamio
characteristics of IndivIdual stagea c;an be -applied when
stages work In a group, the Ccmtral Boiler Turbine
Institute carried out-the work on experimental turbines
that is. described in ~thls artie'le. Tha 4-es*s were made
on two groups of stages, in the first the ratio of mean
-diameter to length was 6 8 - 10 and in the second
3.5 - 6.3. . In both cas;s the hades were twisted. The
first set-up consisted of three stages, as shown in Fig la.
Throughout the investigations the'outlet edges of the guide
vanes were directed alongthe radius. The axial distance
between stages-was 20 mm. Arrangements were made to
measure the total and . static pressure drops and the direction
Card-1/5 of flow at different placesq so as.to be able to evaluate

The Mutual Influence of Turbine Stages,on the Aerodynamic
Characteristics
the structure of the flov. It was found thatt undor the
test conditions used~ later stages have practically no
Influence, on earlier ones and, therefore2 tests on the
second type of-blading were made in a two-stage turbine,
a diagram of the flow path of which is given in Fig 1b.
The characteristics that were investigated are described,
and the criteria.of similarity are given, In testing
groups of stages, measurements were made of the total
power, the power on the wheel rims and tha isotropic heat-
to the static parameters of the working
-medium at inlet to and outlet from the stages. An
-equation is given for the heat-drop corresponding to the
ower of the second stage when two stages are used- a
p
further expression is gi,lren for the efficiency of the
second stage of a groap. In most respect5, the procedure
and measurements were as described in earlier work
(Teploenergetika Nr 10,1955).
In the first series of teata the characteristics of each
of the three stages were first individually studied, then
Card 2/5 in groups of two and fi-Inally all three together. The
main test results are given. The changes in the degree

of reaction at different positions on the blades for a
two-stage turbine are plotted in Fig 2. The experimental
points on the curves 3how that, the reactions remain
practically unaltered whethar 41-1he stages work separately
or together. Graphs of pressu.-e-change an the stage
radius appear in. Fizs 3 and 4, and these tPoo do riot dapend
on whether the stages work aingly o-A tcgethar. This also
applies to outlet angles-of the flow) as will ba seen from
Fig 5. Thus) with a voll-designed flow path, operating
near optimum conditions, preceding and sucneeding stages
make no difference. Curves of change in the total pressure
and the outlet anglos of flow arG given in Fig 6 over the
height of stage 2 wit 'h various gaps between stage 2 and
stage 1.~ Power losses arise because of leakage through
the gaps, as is.well Showl, bY Fig 72 which relatos the
influence of gap 1encyth to the change in -total pressure
-over the height of the blades. Impaired flow structure
'Card reduoes the utilisation of kinetic energy in the s*.aga.
315 Data on the flow of i-torl-ftn d 9~
j - g.mediwa is~shown in Figs b an

3 OVA, lull
The Mutual Influence o--:* Turbine Staijos 011tho AC-rody-nallic
Characteris ties
for various valuos of radial gap. Vic flow is much
the same whether the s-tage woriks individually or in a
.Voupe The following, I)ract:-.cal conclusion3 are dra,~ra
from the work. Tho aorodynarA,; claziractcrisl;icg of
single stagos, as obtained in experimental turbines, can
be used when these stages are~intermediate ones. The
efficiency of the multi-stago flow path doppna3 on the
conditions of transitio-n k).(,
floi,r from .vta,,o -,;o stage.
L)
HIgb leakages past the gaps of the preceding stage
,a
rd impair the flo,.-r structure and iii-crease powero losses.

W9 581
Ttiri llutual Influonco oS Turbine B b a Zon th~, Aorodynx.11n.
Charactaristles
This deterioration incroases with the length oif the :,adial
9-
ap in the Dr.-aceding stage; honea those lca'ca.-ez past
tho gaps are moro inpoztarit ir. multi-5tago than In
single-otago barbines.
Thore aro 9~ftgures, 2 Soviet references.
ASSOCIATION:. Tsentrallnyy kotloturbinnyy institut (~;entral Boiler
Turbine Institute)
1. Turbines--Aerodynamic,charat.-teristice 2. Turbinea--Pressure
distribution 3. Turbines--Test methods 4. Turbines--Power

--f! -p-
.Z,AVADOVSXIT,,..A.M., kand.tekhn.nauk.
Ilffoot of gaps In thajoints of.segments of rims of runner wheels
on the characteristics of turbine stages. Snargomnehinostroenie 3
no*8:26-27 Ag '57. (MIRA 10:10)
(Turbines)

- -- --------
ZAVADOVSKIYO A.M., kandidat takhnicheakikh nauk; RABENKOO Kh.L., inzhener.
Some condiderations concerning S.V. Grishchuk's article.
Xnergomashinostroania 3 no.9:48 S '57. (MIRL 10:10)
(Gas turbines)

V.
-Z AVADOVSKIY. A.M. "ndi"t tel4inichesklkh nauk.
rof~llevn~dtl-D enerMr losses in n turbine stmre [with summiry in
Rnglish]. Teploenergettka 4 no.8:15-18 AC 157. (MLRA 10:9)
1, TSentrallrmi kotlaturbiuM institut.
(Turbines)

BAIMNKO, Kh*L., insho-, ZAVADOVSKIT, A.M.. knnd.t6khn.nauk.
Measures for increasing economic operation of steau turbines.
Ellek.sta. 28 no.9:3-6 S 157 (IGRA 10:11)
(Steam turbines)

91
AUTHORS: Zavadovskiy, A.L1., Candidate of Technical Sciences and
i-4 TITIS: The Influence of Leakage on the Operation of a Turbine
Stage (Vliy~pniye protechek na rabotu~turbinnoy stupeni)
MIODICAL: Teploenergetika, 1958, Vol.5,J4o.l, pp. 28 - 31 (USSR)
ABSTRACT: in' turbine stages of the type illutrated in Fig. 11
there is an axial gap between the end surface of the diaphragm
and the roots of the vtorking blades. The flow through the
blading thus has a leakage path into the space surrounding
the bucket-wheel. If there are equalising aperstures in the
bucket-wheel, the working medium in the. *stage can flow both
through the gap and throuSh the apertures. Tests made with
an unbladed disc, later confirmed by tests on an experimental
turbin6, showed that leakage through the peripheral annular
gap between the root zone and the diaphragm results from the
pumping effect of the rotating disc.
Leckkage influenceo the main flow. Gas leaking back from the
bucket-wheel space into the flow part alters its dimation of
motion "and is accelerated mainly at the expense of the energy
of the main flowi The influence of this kind of leaka6e would
be expected to decrease with increase in the dogree of reaction
-(;ardl/3 of tho stage. Gas leaking froin the flow path into the bucket-

The Influcrnce of Leakage on the Operation of a Turbine-Stage.
wheel space causes hardly any distortion of the flow structure,
N and moderate leakage scarcely impairs the stage efficiency.
Tests were -made at the Central Boiler Turbine Institute (ToXTI)
to investigate the operation of a stage with the two kinds of
leakage. The blading used was that-described in a previous
article in Teploenergetika, 1957, Vo.6. The Saps considered
are those Indicated in Fig: 1. The tests were first made on
a bucket-whee.1 without equalising holes and later on a wheel
with five equalising holes initially of 15 inn; diameter and later
~of 25 and 35 mm diameter. Graphs of the stage efficimey for
various amounts of leakage into the flow path from the space
are given in Fig.2. Simi)jr curves for stages with different
degrees.of reaction are given in Figs. 3 and 4. This kind of
leakageaffect-9 the stage efficiency differently, depending on
the clearunce tn the blade zone. This is seen in Fig-5, which
graph5 stage efficiency as a function of leakage for various
clearances.
The small influence of leakage into.the bucket-wli6'el space
from the flow path is confirmed by the additional data graphed
in Fig.6, which was obtained for different gap sizes and
degrees of reaction. The curve given in Fig. 9 shows that the
Card2/3 stearn-handling capacity of the staEe is Ittle affected by leakaEc.

OR
wins
OWSOVA-0 Yeksterins- Alskeandrovna; ZMMOVSKIT, Mikhail IsaakovIch;
ZAVADCVSKIT# Anatolly Kikhaylovich; ZYSINA-KOLOZM. Larlea
~Afv' Nikolay Akimovich; TYRYSMU, Veavolod
Georgiyovich; ZMJKOVSKIY, V.S., prof., doktor takhn.nauk, red.;
KMATEUM, S.S., prof.9 doktor tekhnnauk, red.; ZHITHIKOVA,
O.S., takhn.red,
(Aerodynamic improvement of bladed apparatus of steam and gas
turbines) Aerodinamichaskoa novershoustvovania lopatochnykh
apparatov parovykh i gazovykh turbin. 'Po4 red. VOS.Zhukovskogo
i S.S.Kutateladze. Moskva, Goe.enarg.izd-vo, 1960. 340 V.
(MIRA 13:7)
(Steam turbines) (Gas turbines)
15

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_6 3~i aftktor.
[Animal nnd PlAnt; brief Introduction to the soierco of 111-a]
Zhivotnoo i rasteals; walon1koe vvedonts v nauku o shlxnt. Izd.
2-oo, do6o I perer, B.G.Noometanovol-Z&vAdoiskoi.:Monkra. Goa. lad-
vo.sel~khos.1it-rjr, 1956. 69 P. (MA 9:5)
i.Doystvitellnn-chlon/Vuenoyuszioy akademli sel'skokhozyoyetveMwkh
n=k Iment T.I.Lanint (for ZavsAovskiy).
iolop
7

-ZAYApZkKIT4 Boris Mikl~~Xlqy c NESIJMYANOVA-ZAVADOVSKAYA, Ya.G.; BOBYIEV.
UIUMINA. E.P.. takhnichaskiy redaktor
[Origin ot domestic animals] Protakboohdente domashnikh zhhvotnykh.
Izd. 4-oe, dop. i parer. IC.G'.~Heiimainnovoi-Zovadovokoi. Moskva,
Goo'..izd-vo sellkhoz. lit-ry. 1956. 111 p. (MLRA 10:4)
(Paleontology) (Domestic animals)

ZAVAXjV5K IY D,
gavadovqj~iy,'D. IIX-ray exAmIn.-Itim of Cin diaphrapn Coljowfxiq rin operation of
di4phra(pocrtIrotqV", 5bornik trudov, posvyashch. prof.,,13avinykh, Tam-sk, 1948,
p. 234-39.
So: U-3261, 10 April 1953 (Le.topis I,Zhurnal Inykh Statey, No. 12) 19,49).

ZAVAW-ISKlYt D ~K.
Zavadovskiyo D. K. "X-ray ob3einiatlnns on stomich patients -fter balne-zological
Cal
treatment In Shira spap " Sboniik truiov (Tomskiy obl. rwvch.-Issled. In-t fiz.
metodov lechenlya i kurortologil), Vol. VIv 191*9#,P. 83-881
501 u-52,41, 17 December 1953p (Latopis 1zhurnal 8nykh Statey, No. 26, 1949).
M-P.M.,

ACC4MRi---
AW 005336:--j~- souliu;. cODF.: URIOIBV010091C;01101~910144
Zavadskly,-- E. A. -Fakidov, -1 G.
O.RG:T-Institute of Yhysi
c's of Metals~.ANSSSR, Sverdlovsk (Institut fiziki metallov
ANASSR)'
Yognetic propertiels,of the alloy FeRh in strong.magnetic fields
bb R~d E Fizika tverdogo tela,.~v. 9, no. i, 1967p'159-144
-base all .- ~rbodium-containing'd -saturation magnetization,
q TAGS iron Oy,
UOY,
:,temperature dependence, critical point, antiferromagnetisim -phase transition:
-....t'ABSTRACT: In view-of-discrepancien between the results-of other investigators, the
j.authors measuredAn,detail the madhetization of FeRh over a wide range of magnetic
fields'and temperatures.. The iron w as alloyed with 53 at.% of rhodium in a high-
frequ6ncy furnace and In an-inert atmosphere. The measurements were made on solid
.samples by'an induction method nnd on powders by-means of a pulse n balarce.
etic
The two measurement procedures 'were described by the authors earlier F1,24 v. 12, 8320
1961 -and v. 21, 693, 1~66). .. Tne meas urements were made at- temperatures 77 - 4oox and
in magnetic fields up to 330 kOe. The results,sihowed-that saturation'set in at tem.-
peratures above the critical valu6 at which the FeRh goes over frcm the antiferromag-
neticAnto the ferromagnetic-stete. The dependence of the critical field on the tem-
-is a straight lin with
perature e constant slope in the entire range of temperatures
and magnetic fields.,'. Temperature hysteresis of the electric resistivity and of the
Card 3~2

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SOUIN ~'D;--;~ SAVIADUATAi~A-4 G#
'Hicrosporogensole in barley an affooted by Inadequate soll moisture
:and nitrogen nutrition. Pokl. AN GSSR 117 no.11150-152 I-D '57.
(MIRA 11:3)
1. loningradqkiy gopudaretvenny7 pedagogicheshy institut im.
A.I.Gertsena. Prodstavleno skademil-on A.L.Kureanovym.
(Brilke'.0 (Spores (BOtAny))

---- -------
v YAD.IOCAYA
GOLITSWI, Lyubo I Nuumovnaj kand.ekonom.naukt,,.ZA Irina
Yevaeyevna. kand.ekonom.nau)c; ORLOVA,
TAMPOLISKATA, Tatlyans Goorglyevna:
kana.takhn.naukt KgOLUOGOROVA, T.A., reciza-val SnUff.
A.A.,.tokhn.rea.
[Maintaining city streets] Yoprosy okspluatittail gorodskikh,
dorog. Moskva, Izd-vo H-va kommn.khoz.RVOl 1959~ 88 p9
(MIRA 12:11)
(Streets--Maintenanee and repair)

ZAVADSKAYA, T.I., dotsent; DOMBROVSKAYA, Ye.A.
Clinical aspects and pathomorphology of acute tuberclilous
sepsis. Sov. med. 27 no.2:9-14 F 164,
(14M 17: 10)
1. Kafedra goopitallnoy terapii (zav, prof. N.M.IvIUIov)'i
-kafedra patologichaskoy anatomii (zav. prof. I.1. Dorokhov)
Rostovokogo-na-Danu meditsinskogo instituta.

A tandidat meditsinakikh nauk (Rostov-na-,Donu)
Z
ZAVADSKAT
Two.cases of cutaneous zanthomatosin, Klin-malt, 34 uo.4:57--M
Ap 056. (mm 10:1)
1e Is kafedry gospitallnoy terapil (zavt prof. A.S.Ybronov)
meditsiaskogo Institutao
(LIPOIODOSIS,
cutensoun, ease reports (Ma))
(SKIN, diseases$
xanthomatoois, case reports (Bus))

~ 3X-'A
Z WAV Y4-.7
USC4R/deop
hysi& _77 W. - -

hysics of the Earth FD-1720
Card 1/1 Pub. 45-8/12
Authors Berdichevskiy, M. 17 and ZavadskaY4j,'T'_, N.
Title On the formation of an electric field in the earth
Periodical Izv. AN SSSR, Bar. gaofiz.~ 1:(8-1800 Mr-Apr 1955
Abstract When a constant current is introduced Into a circuit consisting of
connecting wircts, electrodca and the earth, transitional processes
take place In the earth resulting In the formation of an electro-
magnetic field., Having examined the records obtained at a low level
of interference from the field of telluric currents, the authors
'
present diagrams in which are depicted-eight basic forms of the forma-
tion of the elastic field. The diagrams show impulse, calibrating
impulse and current impulse,
Institution Scientific Research Institute of Geophysical ~Lethods of Prospecting,
Ministry ofPetroleum Industry
Submitted November 23, 1953
-Z~

ZAVAIXqKAY-A, T.N,
Results of testing the method of average apparent resist&nce.
Razved, geofiz, not4;52-58 165, (MIRA 18:9)

5 4~ :~! 14:jy,
CifERNOMRDIK, A.B.; BASS, T.M.; BASS, M.A.; KOVALENKO, F.N.; ZAVADSKAYA, TS.Ye,
Veomycin-resi.itant Porms of colientorites in children and tWr
treatment. Antibiotiki 10 no.9:859-861 S 165.
OEM 18:9)
1. Otdel antibiotikov Kiyovskogo institute. epidemiologii i
mikrobiol.ogii.

IANKINA. V.Yu.; IMMOHIROV, G.,A,-,ZAVADSKAYA, V.A.
UBO nf pituitrin In caaes of difficult egg-laying, PtItne-
vodstvo P, no.s-.45 Ag 158. (14II?A 11:10)
1. Kafedra skusheretva I ginekologit Buryat-ghngollskoga zoovet-
Inatituta.
(Zma-Production) .(Pituttrin)
km~air nail =M~

ltaspsdadudt4~ Pjargifiatm (Modoor) Vlolype in Tashkent,"
A. M. Zavadeklly, 3 pp

inshoner.
Gyrobus. Zhil.-kon.khoz. 5 no.8:27 053.
.(Switzerland-Notorbuses)
(KLRL 9:3)

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GAVRILOTg.A.Kof doktor takhnichaskikh hauk, redaktor: POLM107- IC.A,O-
professor, retionxent; ZATA=jj4jj.*, inshener. retsel~ent;
RUSZVIGHO I.M., Inzhener, redaktor; NOIMLO, B.1.0 takhnicbeskijr
redaktor; TIKHOHOV, A.Ta., teklmichankly redaktor
[Prooressive practice In instrument making] Progressivnata tekhnolo-
giiazpriborostroontias Moskva, Goo, nanchno takhn, tzd-vo zashino-
stroite i sudostroits lit-rye No.29 [)Perfecting instrument production
techniques] Sovershenstv'ovanto tekhnologil prolsvodetva priborove
Pod rade A.N.Oavriloya. 1953. 337 P. (HLRA 8:3)
Is Yeasoyuxnoyo nauchnoye Inshenerno-takhn1oheskoye obehabsetvo
mashinostroitelay I priborostrotteloy.
(Inatrumenta)

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?AVADSKIYI ". .-ItAo-m-na)
OSchool childron.at the health stati.ono. Med.sestra 15 no.6:,29
je v56. WRA 9:8)
(SCHOOL HYGIMA) (BORUrSKAO I.H.) (RED GROSS)
xi .1

-ZHADSKIYB.S. Kolomna)
"The road to healtb. strength, and long life.0 I.M.Sarkizov-Sera-
'O.S.Zavadakii. Felld. I akushe no.10:62-63
zini. Reviewed by
0 155. (KLRA8:12)
(PUBLIC EUM11) (SARKIZOV-SERAZINIO ISHO)

-

AUTHORS: Fakidov,, i. G.- and Zavadckiy, E. A. &SOV/1206-6-7e-28/32
TITM: Generation of Super-in'tIonsive Mai_,,netic Field Pialses
(Polucheniye sver1cb-,,il'nykh Lripullsnykh mac~;nitnykh
poley),
PERIODICAL: Fizilca L-letallov i Metallovedeniy e, 1958, Vol 6, Ur
p 569 (USSR)
ABSTRACT: In 1929/Acadoirician P, L. KapitzaLwanaj~ed to obtain
surge fields with potentials of up to
3 600 000 00 and utilised theM for studyingLthe galvano-
metric properties of a lar6e number of metals-and some
seiai-conductorr;. ~ Earlierthe same author produced a
field aith a potential of the order OfL500 000 00 in a
coil of 1 mm dia. by discharging a powerful battery (Ref 1).
The interest in,phenomena relating to the influence of
strong magnetic fields on the physical properties of
metals and semi-conductors has considerably increased
since that time. De'velopments in thooretiU.Ll physics
in recent years led.to, the conclusion that investigation
of the magnetic and galvanometric properties of solid
bodies in the field of intensive and super-intensive.
Card 1/4 re,agnetic fields can yield im'porbant information on the
_shape and topology of ener8y surfaces.of condu-tivity
P.2f.10
11-A

BOV/126-(5-3-28/32
Generation of Super-intensive Magnetic Field Puleses
electrons (Ref 2*. In the laboratory of electric
phenomena of the Institute of Mobal Physics, Ural Branch,
Ac.Sc. USSR a test rig is at present In operation for
generating strong magnetic fields usin6 short current
pulses obtained by discharging a condenser battery of
1600 ItF capacity charged to a potential of 3000 V. The
discharge of the condenser battery throu6b. a coil is
periodic,with a frequency of 2800 to 3000 c.p.s. and a
dampinG decrement', 3 to 5.5, deponding on the- number
of turns of tho coil. This set-up permits go 'aerabing
inside a single-layer coil a magnetic field vith a
Dotential of over 500 000 Oe with a degree of uniformity
of up~ to 1.5% inside a cylinder of 6.5 mm. dia.- and a
height,of 5 mo, (it is mentioned in a footnote that the
authors hava'succeeded in raloing this poLential up to.
Oe). In Fig.1 an oscillogram is reproduced
which shovis the dependence on time of the potential of
the ma6netic, field. The authors measured the dependence
Oard 2/4

SOV/126-6-3-28/32
Genervet-ion of Super-intensive M -a,-, i ie t 2L cField Pulses
of the electric conductivity of_n and p-typo germanium
at a high frequency 54 Ohm-cm, 58 Ohm-cm) on the
4. t)
U 20 K
ransverse magnetic fleld for T = 300, 77 and
It was established that AR,/R of n-type germanium
(e = 54 Ohm-cm) at T = 200K is subjected to fluctuations.
The results o~ these measurements and a detailed
description of the set-up for measuring intensive
magnetic fields will be published in later work.
Acknowledgments are wade to N. V. Volkenshteyn for
oupplying the liquid Y.~.ydrogen and to K.J. Davidenko for
carrying out the moazuroments.
There are 1 fiSure and.6 references, 1 of which is
Soviet, 5 English.
(Note.: This is a. complete translation)
Card 3/4,
7f 7

8OV126-6-3-28/32
Generation of Super-intensive Mia6metic Field Pulses-
ASSOCIATION: Institut fiziki metallov Urallskogo filiala Ali SSSR
(Institute of Metal Physicol Uval Branch of the
Ac. Se. USSR)
SUBUITTED: January 8., 1958
-1 mngflo L P.#: MdgtjoLia fiold1j.-.Applientiona
V Magnetic fielda-Effectiveneas 4. Magnetic fields-Measurement
5.'Pulbes-Properties
Card 4/4

AUTHORS: Fakidov, 1, G-~, skiys E~ A. 56-34--4-56/6o
TITLE: Oscillations of the Electric Resistance of n-Type Germanium
in Strong Pul8e-Like Magnetic Fields (Ostsillyatsiya elektri-
chookogo soprotivloniya germaniya n-tipa v silln:rkh impullsnykh
magnitnykh polyakh)
,PERIODICAL: Zhurnal ekaperimentallnoy i teoraticheakoy fizikif 1958,
Vol, 34, 11r 4, PP- 1036 - 1037 (USSR)
..ABSTRACT: 7 The authors investigated the change of the electric resistance
-of 3 monocrystalline germanium samples -f the n-type in a trans-
vernal pulse-like magnetic field with an intensity up.to 12o ooo
Gauss at temperatures of 300,77 and 2oOK. The magnetic field
was produced by means of the discharge of a condenser bank by a
solenoid, and in the opening of that solenoid a Dewar flask con-
taining the sample was put up. The germanium eamples were of
different degrees of purity. In magnatic fields of 25 000 -
doponds linearly on the
12o ooo Gauss and at T
- 300OXItR/R
.
.
field intensity in the cane of all 3 camplea, the 3 angles of
gradient of the line are given. At 770K and in the same interval,
Cal-d 113 of the fieldintonsition the linear dependence holds only for 2

Oscillations of the Electric Resistance of n-Type 56-34-4-56/6o
Germanium in Strong PulBe-Like Itagnetic Fields
samples. In the third sample that dependence has a curved cha-
racter with a tendency to saturation. The chang e of the -A R/R0
of the sample number f(specifio resintanco-9 1- 54 62 cm) was
also investigated at 2oOK in the case of field intensities up
to 11o coo Gauss..It is interesting that in such a case the
resistance of the sample decreases instead of increasing as
usual. But in the case of a reduction of the amplitude to zero
the resibtance of the sample returns to its original value. Besides
this fact in the case of such germanium samples af the n-type an
oscillation of the electric ronintanco in-the interval of the
electric field intonnition of 25 ooo - 11o coo Gauss wan observed.
The period of that oscillation in o,lo Kilogaune and its maximum
amplitude H - 55 ooo Gaiuss. The author points to different pre-
vioua works, dealing with the came nubject. Data on details of
the experiments and on the devices for the production of atrong
magnetic fields will b4 published in a later paper, There are
I figure and 5 references, I of which In Soviet.
Card 2/3

Oscillations of the Electric Resistance of n-Type. 56-34-4-56/6ro
Cormanium In Strong Pulne-Liko Maipiotlo Floldo
ASSOCIATION: Institut fiziki rietallov Urallskogo filiala A111 ST3R
(institute of Physics of Metals Vrals Branch, AS USSR)
1. Germanium crystals--oscillations,

SOV/126-7-4-24/26
AUTHORS: Fakidov, I.G. and Zavadskiy, E.A.
I--------------------
TITLE: An Induction Method of Measuring the Hall Effect in
Strong'Pulsed Magnetic Fields
PERIODICAL:Fizika metallov i metallovedeniye, 1959, Vol. 7, Nr
pp,637-638 (USSR)
ADSTRACTt In the classical method of measuring the Hall effect a
primary current from an external source is passed through
a:sample in a magnetie.field. If the magnetic field is not
constant, currents induced in the sample may be used
instead of the primary current. A method using varying
magnetic fields to measure the Hall constant was first
described by Busch et al (Ref 1); they used currents
induced on switching on or off of a d.c. electromagnet.
The present authors describe an application of the Busch
method to strong periodic pulsed magnetic fields and
materials of high resistivity such as semiconductors.
-in the form of a disc of radius r0 was placed
A sample
in a coil at right-angles'to magnetic force lines
(Fig 1), The varying magnetJc field induced currents
in the disc.. For samplelp of high-resistivity material
r;ard.1/3 in the form of thin dises,the surface effects and the

n, 41
sov/126-7-4-24/26
Aix -Induction'Method of Ifeasuring-the Hall Effect In Strong
Pulsed Magnetic Fields
demagnetizing action of induced currents may be
neglected. Since the applied magnetic field is of
damped oscillatory nature themagnetic induction is
given by B B e- bt sinA (4)
M
where b =;6/T, 6 is the logarithmic decrement and.
T is the time period. The value of the Hall emf between
the centre of the disc andits periphery, at the moment
of the firot maximum Bm.-. = Bmexp(-6/4) of the magnetic
inductions,is given by
2 2 1 6/4
VjCj =, -ARar wB" , where A = ue. (1-tan y),
0 ml
R is the Hall constant, tan b/w, w is the angular
frequency, a is the electrical conductivity of the
sample. The relationship obtained here ivas checked. on a
germanium disc of 11 mm.diameter, I mm thickness in
magnetic fields up to 120 kilogauss and w =-160o0 sec-
The calculated values of the Hall constant R were
Card 2/3 compared with the results of measurements on a plate of

7
sov/126-7-4-24/26
An Induction Method of Measuring the Hall Effect In Strong
Pulsed.Magnetic Fields
the same material; the two sets of results agreed
satisfactorily. The method can be used also for
undamped alternating magnetic fields. Then b = 0 and
0 and the Hall emf between the centre of the disc
and Its periphery is given by
V Rar 2wB2 sin 2wt (9)
8 0 M
.In low-frequency magnetic fields and for thin.discs the
relationships obtained by the authors are alijo valid for
metals. There is 1 figure and-1 Swiss reference.
ASSOCIATIONtInstitut fiziki metallov AN SSSR
(Metal Physics Institute, AS USSR)
SUBMITTED% December 4, 1958
Card 3/3

67687
7 6 00 SOV/126-8-1+-9/22
AUTHORS:, Fakidov, I-.G,-,-and Zavadskiy,- S.A.
TITLE: A G-enerato of Ultrahigh Pulsed Magnetic Fields,,
PERIODICAL: Fizika.metallov i metallovedeniye, 19~99 Vol 81 Nr 41
pp 562-568 (USSR)
ABSTRACTs The pulsed magnetia.fields are obtained by di.9chArging
a bank of capacitors through special coils :magnetic
fields up to 700 000 oersted can be obtained in this
way. A-photograph of the apparatus is shown in Fig 1.
Sixteen type--IM-3/100 capacitors are--employed so that
720O.Joules can be stored at.a.nominal voltage of 3 kV.
By reducing the resistance and the inductanco-of the
discharge circuit it was possible to increase the
percentage of_energy used to produce the magnetic field
to -17%. - The -.coils can take - currents up_- to _60 -000 amp.
L-block-dia-gram of the apparatus is shown in Fig__2_.-_The__
bank of capacitors is charged from the high-volta-ge
rectifier through the current limiting resistor R.
The discharge takes place through the spherical discharger
Card 3. If necessary, the circuit can be controlled
au
1/2 tomatically to produce.tho required current pulses.
A. drawing of one of the coils ig,given in Fig 1~j and the

-----------
67687
SOV/126-8-4-9/22
A Generator of Ultrahigh Pulsed Magnetic Fields
corresponding magnetic field distribution forA coil with
an-internal diameter of 16 mm is shown in Fig 50 The
magnetic field vas -measured vith-a search coil In
Conjunction with an RC integratort and.tho calculated
value of 700 000'oersted was confirmed experimentally.
The ultrahigh pulsed magnetic fields are being used by
the present au thors.-in a study of galvanomagnetic
phenomena and of the photogalvanomagnetic effect in
various semiconductors. Magnetisation studies on-
ferrites are also being-carried out.. A similar apparatus
has been built in the low-temperature laboratory of the
Moscow State University Professor A.I. Shallni1covil;arr. Memb.
AS USSR:Acknowledgement is mad to._1_.I._R4~_tsevich_and
There are 6 f igures 2 tables and'7 references, of which
I is French, 1 is,Soviet and 5 are English.
ASSOCIATIONs Institut fiziki metallov AN SSSR
(Institute of Physics of Metals, Ac.Sc. U344)
SUBMITTED; -February 28, 1959
Card 2/2

ZAVADSKIY, E. A., Cand. Phya-Math. Scl.. (dies) "Galvano- F~.P. L-n e tin
Properttea of -Irk 31,ron,-e,
Sverdlovsk, 1961, 17 Wad. of boi. USSR, Institute of Phy-
cies 0.0
.Metals) 170 copies (KL Supp 12-6l,r251).

S/126/61/011/001/013/019
E052./E314
AUTHORSs Zavadskiy,-~E.A. and Fakidov, I.G.
TITLEs Electrical Conductivity of ni-Ge in Stroig Pulsed
Magnetic Fields
PERIODICALt Fizika motallov i metalloved niya, 1961,
Vol. 11, No.. 11, pp. 145 147
TEXT: In a previous paper the authors showed that the
relative-change in the resistance of n-Ge reaches a saturation
valuain a strong longitudinal magnetic field,and beginning
at a certain value of the field,commences to increase
linearly. These.results are in agreement with the theoretical
predictions of Tsidilikovskiy and Shirokovskiy (Ref. 2) and
Gold and Roth (Ref. 3).- The present work is concerned with
the variation in the resistivity in ''a -strong transverse
magnetic fielde n-Ge monocrystalline specimens having
resistivities of 2, 30 and 46 ohm.cm at room temperature were
used.. The__,specimen dimen-sions were-9 x,l..5 x 0.8-mm. -Current-
leads covering end surfaces and voltage probes 3.5 mm apart
Card 1/8

--89947 -
5/126/61/oll/ool/OI5/019
E032/E314
Electrical.Condue-tivity of n-Ge in Strong Pulsed Magnetic Fields
were used The contacts wez~e ohmic and the me suremlents
were carried out as in Ref. 1. Fig. I shows tahe relative
change in the x5sistivity for the specimen with Q = 2 ohm.cm
at different temperatures.as a function of the magnetic
field (:41 k0e). The results refer to the case 1-111cl-113
In..this specimen the mobility of current carriers wan
2
it = 3500 cm /Vaec so that at H 200r.--uH/c 7-0
Saturation would be expected to net in at A1116 I The
quantity 0) X.t for IIII 11:~j onnrbo calculated
from the formulas
Card 2/8

given in Ref. 2, where y I.M( /mt and m( and mt are the
longitudinal and transverse effective masses, Assuming that
Y -17 , one finds that (4,pi /,,-,O)sa = .1.0 However,
t
complete saturation is not observed. Continuous approach to
saturation isj.in fact, replaced by a linear increase. A
"discontinuity" in the curve is nevertheless observed at
)'= 1.2 . i.e. the discontinuity occurs close to the
0
theoretical value of (ZSek/(:)o)sat The "discontinuity"
can apparently be explained by the quantisation of the 'energy
of the current carriers in the magnetic field which becomes
appreciable for hw '~, kT. where w is the cyclotron frequency
and h is the Planck constant divided by 2fr. Assuming that
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89947
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Electrical Conductivity of n-Ge in Strong Pulsed Magnetic Fields
the effective mass mk 0.08 m. one fInds tivi t.' hw a kT
will occur for H mi. 35 kOe and, T58 OK , while at T 77 OK
the magnetic field should be 45 kOe. It is clear from Fig. 1
that the "discontinuity" does in fact occur at magnetic fields
close to those for which hw = kT . According to Argyres
4), the linear relation between ) and H should
.0
occur in non-dogonarate sardicondue tot's Whon 11W -'-, kT and
soattoring oti phonons terminates. For specimens having
resistivities of 2 ohm.cm or greater, scattering on impurity
ions'can dominate only below 20 OK. Thus the present results
are in good agreement with thosereported in Ref. 4. Fig. 2
shows the plot of 0 as a function of H(kOe) for the
specimen with 30
A sharp transition to
T n.58 and 77.0K when
to tile calculated va liAe
Card
ohm. cm. In this figure W.,1101
the linear law is'found to ~`ccu-r at
A- i.; 0) 2.9 which in close
303 The latter value
71~

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EMMA
Electrical Conductivity of n-Ge in Strong Pulsed Magnetic Fields
was obtained for 17 from the formula given by Gold and
Roth in Ref. 3. The "discontinuity" disappears at high
temperatures in weak magnetic fields (up to 18 kOe) 16 The
results obtained by..the present authors at T a 94 K are in
good agreement with those reported by Herring at al (Ref. 5).
The resistivity of some specimens was also measured at
T =-200 K . In the case of specimens with (, = 30 ohm.cm
with NIEUI], the curves 'of Q-'\r)1rj versus H exhibit
A ~ :~ ~ 0
the following behaviour. 1) for fields up to 15 koe the
curves approach saturation at ." )- 3.0;
~O
2) between 35 kOe and 110 k0o the curve in linear and
(tie L /e0 increas'as from 4 to 20; 3) above 110 koe the
curve becomes nonlinear and the values of are
0
~25, 29.5 and 31-3 at 140, 170 and 200 k0e, respectively.
The Hall affect.has.also been measured and the results will
be reported in the next paper of the present journal.
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899-47
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L032/E311k
ElectricaI Conductivity of n-Ge in Strong.Pulsed Magnetic Fields
There are 2 figures and 6 references: 3 Soviet and
3 non-Soviet.
ASSOCIATIONs Institut fiziki metallov AN SSSR of
Physics-of Metals of the AS USSR)
SUBMITTEDi July 20, 1960
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s/i26/6i/on/ooVuI:5/oI9
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Ele'ctrical, Conduotivity of n-Ge in Strong Pulsed Magnetic Fields
ApL
77-K

l
~ NOOK
z

too Me 200 2J0 J00 J.50

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