SCIENTIFIC ABSTRACT ZHELUDEV, I.S. - ZHELUDEVA, G.A.

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SCIENTIFIC ABSTRACT
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h5676 p* 3/6.7 63/OOQ/ ~#06/0124'i AUTHORS: Vl okh 0 G, Zheludev, I e S. V*AP TITLE optical ef e The electro- f a i in eryitalig of penta- erythritol C (C H OH) PI-MIODICAL; Krist 0.1 allografi n 1903t 51 56 -TEXT: For pentaerythritoll-which belongs to-the crystal crystals showing the.growth pyramids 10& appear to, have a t,46- fold a Xis, Abstracter$ v s notet The authors 'state that the crfstft14.'.-,, appear ~al-optically. , This does not appear to be correc ail., this systemmust be uniaxial, ",:,: " but: it may mean that the ellipsoid' of revolution which represents, the refractive indices require0-1 wo t parameters to describe it and haa..two different axes The o.ptical.ind-icatrix in described by.the equation: 2 2 2 2 (c2 2 (a 4- r E- )x + (b +r E )y + -.+r E )z + 2r ZX 0 12 y 0 22, Y 0' 32 52EY when an electric field E is applied along:the y-axjs6 'This y-axis is-the fourfold,inver'sion axis for the crystal as W-- whole. b and c are the reciprocals of the principal 10 0 Card 1/3. "S/07o/63/008/001/008/024.'. The electro-optical, -EI32/F.46o -optic I co refractive indices, r are the- electro A efficienta, 8 being non-zero for thLcut. :,It follows that when an electric. field is applied the indicatrix',is deformed and rotates in the XZ plane through an angle This y-cut crystal was mounted betwe.en crossed, NiPols And a beam,of monochromatic light was 'The~plate was. passed through'the system into a.,photomultiplier. adjusted toextinction and a..high-voltage was applie.d to the ad electrodes,t''the~increase inA,ransmitted light being measuri ,.The increase resulted,from,'.the.r,otation'of the indicatrix which'.. could, reach-22#5-0 if a field of 220:kV/cm were applied, The material, has a high melting point: 1: 25719CY And behaves as a linear 1o1.5 to 1012 ohm cm dielectric with a'specific resistance.of over the'range 30 to,1,300C in 'the absence of surface conductivil y. ~The crystals are-not.hygroseopic and have 4 perfect 001 cleavage-, which corresponds to the-y~-cut,used if it-is reckoned that the growth pyramids.'of the,formACLI;, give crystals of the, class .2. The moduli were found to be 8 r52 (4,38 +`0-13) (2 09:t 0 13) x107 xJ0 egau and ~r32 r12 V~ Card 2/3 ~ , N, i T!, :R:: I T", -C i I It, 11 1 i a t~ 11 , "ti it ~:. "m-ai 45677 9/070/63/008/001/009/024 '9132/9460 AUTHORS Sonin, A#S#1 -Zholudev, TITLE t The ifivestigatidn of certain dielectric properties Or single crystals of sodium nitrite PERIODXCALt Kristallograftya, V089 .-62 no.1, 1963, 57 'TEXT4. Ferrbelectricity* in NAM02 w",predicted by the authors In Crystals gravit'frova solution were used ~Irst but were- 195~. .:ufiaAtisfactoiy.bec can a ause,of high electrical" tivity, The dep endi3nc a on tompoira tuire , of, di aloe tt-ic constalts, spontaneous polari coo. *Is 'tric' It ' and pkeso- zation ''coerciVe for 0 6onduct v y ~Glectric properties of:alngl* crystals of4od4a nitrite were ;.Anvestig4te.d. The crystals' used voro,,made- from the Melt"ift lied -dried in vacuo at clbsed,Amliulea rom malt which,hid been ear a,~Mgfi temp4rature.,,". ..They.. vere zon-hygroscopic, Theyclanyod easily parallel to' -~Plitesl of other, orientations war* .,thus Aifficiult,to pr'e'pa~rq.. ': Bloatradqx'wero. .applied by eva,porating- silver,.-'. The, dielectric constants were measured at 500, We andt at. room. temperature 0 6.8, e 6.4 and .,,were b 7 8;- ~at 170,&C a' X- ~ec Point,was found I the curv* for- oc bard:1/2 The invest igation of cartain _E132/Z460 i~~hich' rose to a ove-'iCO.' Above th po b e Curie int of 161*C ec obeys the Curie-Weiss law.-. ea and show discontinuities of'slope at*the,~Curie.point but do not exce 14, ' The hystor 6ib 10-op was, plotted.-at, vaiious:timperatures. At room temperatur: th" - cc IeIrcive force - ~19 higher_ than could.be applied..' Above 120% the -,hystereals'.1ooo could be' observed-. spontaneous polarization was ~ ineaLsureA an 8 microcaulomba/cm2 and 'at 150*C the coerci Ve 2,.kV/cm changing linearly Iw.ith tempsristure.' 'Me - Pier-o- 010*~tric moduli were measured d 4 k 10-6 essu. at reer. being 4,. `tewper&~ure..- .'It- changed little.:. until. above 160 C when a rapid' ..IFa Li io, - zeid 'occurred. :The'. electrical. oonduotivity followed t-he lotw, L63 a =.k/T, giving`an~lefiergy of activation of 0.72 eV above Ak'e- Curie point and..0090 in' the ferro'electric. region. , Non]. inear ejj found .when',the sunce IOtibility was measut-ad an A I%Lnctiott offield ~tt I.- Kc/n..' .'The buMviour oC NP.NG2, All U) be 0(1--with that.'of'KNO' r there is also no layrirogen. -The cc mr whe a .'ferroejectr .11.city and'-,, e ransitionappear's to'be connn,cted 'with rdering Of, thel'1402, groupso There are 9 figures. R (Insititute of' ..ASSOC1:APION...:Tnfjtiiut"kristallografii AN SSS T AD 59~,19,62 Crystallography AS USSR). J-~ I C S nf. ferroe'ectric cr"Ys~;-'!, TOPIC dielectric hy3teresiSt triglycine sul. --c 3Q2S ga5 5 -'1 Card 1/2 CODE: EE Cord 2/ 2 11 A 0 1 T !'1 0 JI I FP, HF 11 .III 11111'[ I- u C) rl-, r-) w " . I I I , I 1 . 1 .1, -0 i I .1 4 , I 0 . 1 u 1 _ransj. C n S. of If 11 Card I I ~`, 2.11., i i 1. A I , ~t 1. 1 1 ~ I V i i I'll. a 41111 lr~p f " 4 AICCF-SSION NR: AP40193Z4 S/0105/6410001003/000110005 Card - --- - - ---- - ------ t 1111111tillivit-11111 IlliBilill I t i - I I I ~ 11 ~ I lill. i ~i 41 IN, M NI a T P! 11 i i t an r 13 -L-nt! MF7mw~lj- w1a i I I ! 1, I i If. . . 1111: Il ~! j :;:-, ~ ACCESSION NR:.-~AP4043192 stal (micia liners). Illumination during the polarization was c ry with monochromatic 546-nm light. The charge was measured by the depolarization method, with,,the photoelectret illuminated with the undecomposed light from a mercury lam� and with integration of the depolarization current.. The time variation of the photoelec- tret cbargewas found to be exponential. The reciprocity law was fulfilled over the entire range of light intensity employed. The' charge density was found,to be linear in the polarizing-field in- ..tensity. It is concluded on the basis of these results, and also results by others, that the kinetics of,formation of the photo- electret state in colore d alkali-halide crystals, as well as their. depolarization, are,in accord with the deductions of the phanomeno- logical theory. "The authors thank L. M. Shamovekiy for supplying the samples of additively colored single crystals." Orig. art. has: 1 figure. ASSOCIATIOM. Institut kristallografii AN SSSR (Inatitute of Card 2/4 Otl T . I i: I T '11111, ~i 11"I'1 11. 111-11,11FIti"li"! it 1. . ~ 1~ H : I I R RM I T 51 M -a:,-= -. I 1~ W~ TIT, 22=xMMMw=*M Sam Ifflufflip 'IN JIM."Al J 1,1111,111"M 11 0'i 'HIMIJ 111,14, JAW,~ t. ii iilil WIN M, 'ffil t I lhl Mfii 11111411! 11 L i 1 1 :1 'Ji -1 I~il~ INFEWS I ITIN In.!- ~11- L 2119-66 0dT(J)/T/&ED(b)-3 IJP(c J 7MMYSIMUR N R AP5022732 UR/0181/65/307/009/2834/2836 AUTHORt kref'yev, 1. M~; Bachulin, P. A.; iheludev. 1. S. TITLEt va v et n f r a r e d t r an s a 1, f; 9 1 ~r n q p e r t,t - SOURCEt FizLka tverdogo tela, v. 71, no. 9, 1965, 11814-"1936 TOPIC TAGS: transmisilon spectra, improved tr;.namLitsion spectra, dieLectrLc ABSTRACT: Transmission spectra of polycrystalline samples of NH02"4 were obtained in the frequency range from 20 to 71") CM-1. The curve of optIcal density D - -1grK (where K is the trangtolo4ton coefficient) showed ten absorption levels In 1-ie Inveqt1gated r,inge -)r t'le spectrun. A wide, intense level of absorption with a maximlim in .'i,i region of 40- 55 cm-1 was obRerved in the low-levtol part of 1he 4poctrum. No changes in the parameters of the 40-55 cm-' levol werp ovident from temporature meisurpmentq In the range Fr-r- rnnm rpmver,a~,jre to III-8K. th- ~rpqpn-o -if r, I it ti ii, wh i rh in T rig I HM! 1171i'll""I'l I'l :1 11VE"M111 A CC E S I Mi A P ~ 0 2 2 7 3 r eat -n I I i r P t - r I o 4, r p I i r - 1 q j 1 1 ~i t n A 'I ""INN 1 .-,1 1 Ito 1 h271-0k 1 EWT(~)/IBPA (s b) 1JP (r ACCESSION NR: APS024569 UR/0070/65/010/005/0764/0766 548.0,537,226.1 AUTHOR: Zheludev, I. Ludupov, Ts-Zh. 3. 86 x 1 10 fre- TITLE: Complex q!gjqgL _9f Rblj9P0, in t1jo 8 x jo cps quency range ,71 SOURCE: Kristallograftya, v. 10, no. 5, 1965, 7M-766 irlie, tirt. mtan 4- i.e.$ measurements of the quwtit1cst3*3* and" in NbIT-P jf 2 ()4 crystals. Measurements at low and high frequeneles werv inarlp witli a low-freTlency RFT bridge and a PaIEL low-capacitance ineter, Nit-isurernents at 15 Mc were made with a YO-F) Q-rnetcr. It was found that Oil, ~ I lu f..; of thc clectric eonstmlx of samples cut out of different portions of the same crytila I ~i n, the i~.ijnc, 11owever, I may change with the conditions of growth of tho crystal, A rvarked decrease (dispersion) of the dielectric constant occurs in the 9. 6 x 109 - 3. 86 x 10 cps rango; at these fre- quencies, a substantial Increase in Lhe loss-angle tangent beirins. 'rhe nature of thin dis-: C ard 1/2 L 4271-66 ACCESSION NR: APS024569 persion can probably be determined by mertmirements at higher frequencies. Orig. art*'! has: Ifigure, ltable, and4formulaB. ASSOCIATION: Institutkrifftallografil. ANSSSR (Institute of Crystallography, ANSSSR) SUBMITTED: 05Mar6.5 ENC L: 00 SUll CODE: 5s) r. NO RE F SOV: 0 04 OTT[ER: 001 7 a rd 2/2 L 21.122-66 M) IRWP( 1 011959 30URCE CODE- UR/1 0/6~70-1070-03-70-33-570-3-37-1 b& AUTHOR: Arbats~aya, A. N.; Zheludev, 1. S.: Zirnit. U. A.; Sushchinskiy, M. M. ORC-. Institute of Crystall gra2hyt AN 853R (Inntitut kriatallogra.rii All S$SR) --TI:TLF,: Low---irequenc-y vil-5rationall: spectra of triglycine tJ &id rocheUe salt:: (P monocrystals during phase transitions _.Lulphat i -337 5 SOURCE: Krista3lograriya, vo 10$ not 3. 19651 335 S 'TOPIC TAGS: - phase transition, Ram.an spectrum, Curie pointj light scattoring# c9tal lattice vibration,, quartz crystal, crystal i3yamtry, single crystal ABSTRACT: Raman scattering spectra of monocrystals of triglycine sulfate are studied near the Curie temperature (4490C); and those of Rochelle salt, near the Upper Curie point (+240C). According to the Ginsbure-Levanyuk theory, the spectral structure of the scattered light should change markedly near the phase transition Points of the second kind. This change should be characterized by a decrease in the frequency of certain lattice vibrations when the temperature is raised* At the "transition point of the second kind the frequency of these vibrations should become zero and the corresponding Raman lines intensify. Experiments with quartz appear to oupport the G-L theory~ ':Triglycine sulfate under" goes a change in symmetry upon passing through the Curie 4poiht. A right-angle prismatic monocrystal was illuminated along the Y and then along the Z axis, and th scattered light was observed* along the Z axis In both cases. A line at 47 cd-? appeared in the Raman spectra when the direction of Card 1/2 UDG: 548.0: 537 L - I -~ -",; - C~t, ACC NRs AP603-1959 ~-illumination in changed from the Y to the X direction. reatLwas of the spectra us icOmPared with published data in a table. In order to obseme the expected inereme, iii'scatte'red Ilght hitensity the iemperature of the sample was varLed slowly through the phase transitions but no change was observed in the R&-nan spectra. Similar experiments were conducted with piezoelectric salt crystals with similar results. Orig. art. has: 2 tables. [JPRS1 SUB CODE8 20 SUBM DATE I O8JUn64 ORIG W, OW OTH PJW: 004 III] I'VI-4110 TA 011-027 027-4-T-71- ACC NR!.: 'AY60- _'_UH/0 9.1-16 ~Gavrilova I M t%ihulln, P-7-A.) (jeceased); V. Zbqiludevi, I.;.- SO PhYSiCB I stltute-im;j. N. Lebedev AN SSSR_,_Mo;cow ~ORG: n ;i (Fizicheakiy institut AN. .959R) tterin ~TITLE: Temperature dependence of the intensity of light sea !in oriented single crystals of KH2 PO and Rochelle salt 4 :'~` __i&OURCE: Fizika tverdogo tell _v. S, no. 1, 1966, 272-274 ;TOPIC TAGS. ferroelectrie crystal, phase transition, light scatter- ~ing, temperature dependence, light polarization, elastic modulus, ~crystal lattice vibration, Curie point, paraelectricity, piezoelectric i_~ 1 property IABSTRACT:. The purpose or,'.the measurement of the temperature depend-. '-,vence was to check.~whether__',the ferroelectric phase transition in these.: wt tW-Ina tab iflt,_y of the dryabal against: opt1da lattloo V1 brn L. I Owl. Iliq ~x-popinont wo ffin.45) wltih 4 ape0romplip-P Card 1/3 21222-66 L 7:-11__-_ A00 ~NR: AP600381~ (D~S_128), 4hose, output was- photoelectrically recorded. The Allumlna-t, tba-'I-samr -;oo6iln _t -descri ed elsewhere (A. V nd aes, ------ -g-- sys em are b '' 4 v. 2't Rakov., TvF.0 In '1964). The Investigated crystals were 'transparent with cross sections 7.5 x 7.5 min and lengths 20, 23, and 119 mm. The Rochelle-salt cryataI5 measured 7.5 x 7.5 x 30 mm. The 0 Intensity of scattering was meajured at the maximum of the Hg 4358 A .line under smooth vartation of the temperature. The results were .strongly dependent on the polarization, and in the case of one type :of polarization the Intensity of the scattered light had a variation ,similar to that of the reciprocal of the elastic constant. It is concluded on this basis that the scattering Is produced by anomalous acoustic vibrations. In the case of Rochelle salt, the effect is 'less pronounced in K PO and no increase in the scattering intensity H2 41 !is observed at.,the second Curie point. This Indioates -that the ~tl~~Vstructure of the- Rochelle salt crystal is different in the two para- lelectric phases. No low-frequency Raman scattering spectrum was ob- tserved, and it is therefore deduced that the Increase in the seat- tering intensity of the Curie point is connected with the anomalous behavior of the acoustic lattice vibrations. It Is concluded on the Card 213( .-I)o E"I t I 1/ta I ~Mj,/ VHiw~f)/z I -L 1jr; C! 'AWNW AP6018770- 65/011/003/0415/0418 SOURCE CODEj UR/0070/ UTHOR% Zhelu 6v,, 16 S.;-Gladkiy, V.: Vol t;~~ranstituti~'Of Cx~stallographyj,' (Instit~M_ kristallografli AN The -in17 sinj" or JS 4;T14t otiq off-set 7sta of Rochelle salt 415-418 ,TOPIC*.'.TAG t challs -'salt s sing,le c'rydtido:pyroolectrid effect, Curie temperaturet 'a-'stressi`pol ,arization 4B$TRACT: Oyi;6ele atria coefficients of Rochelle salt single crystals were, measured, kl.. tween -300 and +300C after polarization by mechanical straining. The pyroalectric ihame was measured in a Tepler thermostat by the compensation method using slow heat- ~Tlng rates. Temperatures were measured with Cu-constantan thermocouples to I or 20C.b6- 'jond the Curie point. The polarization P of the strained crystals was cbtained from P pap + Pt Mhere P is the spontaneous polarization; Pf is the elastic polarization;. 81js '$2 we ep cross-sectional areas of domains having unlike sips in the crystal face, perpendiew- UDCt 548.0 637.227 Sard 1/2 L--36407-66 ACC NRi'AP6018770 lar to the X axis-, 81 + 82 $,(area of the sample). The variables P P1, 81 and OP S2 depended on 7 and Y the polarizing stn)sst Pyroelectric coefficients (P), obtain- X from pv&ldr, were given as a function of temperature T for values of Y ranging X ii"Z,... frW 0 to 4100 g/CM2. ~IyM _30o to OOC p was positLveg from CP to 30OC--negative. 'Cusps occu= a 0. n -180C 4md +2400, the ;exact coition d,near the Curie-temperature k -being, dependent on Y'. The magnitude, io~f p was also, dependent an Y rising steadily X !k,~ :to ZO- which corresponded to a criticalvalue of SI-82, whereupon it decreased sllgbrt-~ o, ,, . X Ahe Chwie pointn,,p (300 ONE mits at--180C.and 340 OGSE close to was, PiXISM ite., In thd. V oquLT41ently "'j, 1XI I u 7 ; 44 7, 212421~ L 2 t ACU NR: Ap6mg8o soURCE CODE: UR/O,-)56/66/olio/0(13/()f-i9r~/06014 .AU'211ORS: Yqmzin, Slizov a. Zheludev, I _3 'ORG: Institute of Crystallo ra y,_,LeadPmy of 8ciences SSSITI (Inatitut kristallografli Akademit nau TITLE: Spin ordering and magnetocrystalllne anisotropy in single c.rystalo of BaCoxFe 18-xC27 ferrites 11 SOURCE: Zhurnal eksperimentallnoy I teoreticbeskoy fiziki, v. 50, no. 3, 1966,_,595-6o4 TOPIC TAGS* ferrite., single crystal, magnetic anisotropy, neutron dif fraction, nuclear spin, Curie point, temperatuzvi dependence, spin wave tbeory ABSTRACT: This Is a dontinuation of earlier, work by the autbo~s (ZbETF v. 46, 1985, 1964). In this paper new data are pregented on the magnetic anisotropy energy of the ferrite syotc---ni undRr diricusclon, The crystala were grown by the Verneull method and were the 3awte as Card ACC NR: Ap6olog8o _.Jused in the ez-irlier,J_nve'qt19abibn. In view of the fact that the. ter- ~rites investigated exhibit various types of magnetic anisotropy at low temperatures, the authors used a neutron diffractic-n M~!Ihod to investigate the influence of thp cobalt Innn on thr' I-VItIC.1113 of the fro Tj spin ordering axis In these cryBt~113 1r) ~11-? tPMPC1';:t'uro 7~K to the Curie temperature. The temperatiire der-r-nder.(,c of the mag- netic anisotropy constants wae investigated In th(ii., same rarige of temperaturge and compared with the theory. 'Me same samples were used to obtain neutron diffraction patterns as were used In the in- vestigation of the magnetic anisotropy. The rpsults show that the spin directions coincide with the directions of the total magnetiza- tion vectors of the crystals. The data alBo Indicate that the experi- inental results can be fully reconciled with a theoretical formula deduced by Ye. A. Turov from the phenomenological theory of spin wavev '~EVad-magnl touporyad oc lie nnykh kristallov [Physical (Fizichesklye svoys Properties of Mangetically Ordered Crystal,-,',, AN 9,9SR, ]~)6~',, w,,~-jout need to make allowance for any partlci_ilar itnic' -ire. wde! ~)J' art. has: 7 figures, 3 formulas, and 3 tables. SUB CODE: 201 SUBM DATM 2500t65/ OHIO REF: 0031 OTH UFS 009 Card 2/2 ACC NR, AF6007268 SOURCE COM AUTHOR: Zheludev, 1. S. AIN-1 ORG: in lraVN ex-yetallograpW (Institut AN SSSR TITLE; Electro-obical phencinem in crystals UR/D1_)53/66AM/002/0253/o2e6 kristaa-lograril AN 885H) SOURCE: Uspekbi fizicheakikh muk,, v. 88, no. 2, 1966, P-53-286 TOPIC TAGS: electrooptical effect, refractive index, absorption coefficient, light absorption, electric field, "au -,.ABSTRACT: We is a review article dealing with electro-optical effects, defined all the changes induced in the optical properties (refractive index and absorption coef- ficient) by application of an electric field. The different types of electro-optical, effects are described (linear, quadratic, spontaneous), and the equations for these effects axe derived in a matrix formulation for crystals of various symmetries (orthorhombic, mancalinic, triclinic, tetragonal, trigonal, and hexagonal). This in followed by a discussion of the optical systems uned for the invef-ttgation of the electro-optical effect, and methods used to determine directly the electro-optical coefficients. Data are presented on the linear electro-optical effect In linear dielectrics and ferroelectrics, and on the quadratic electro-optical effect in rys- tala with central symmetry. Practical uses of the elect ro- apt. ical propta-tie'sf -shifli-ters,Frsotu-0 ~ ord- crystals for high-frequency light modulation and opffOZ 0 ~~f ing, and for narrow-band interference- polarization light filtere are discussed. Origol-_ art. has: 16 figures, 36 formilas, and 5 tables. SUB CODE: 201.4 OPM WW: 012/ OTH MW: 05T gard 11 W.- Asa pM I gj&e L-02461---67 .-.'ACC'NR: AP6024666 SOURCE CODE: UP/0070/66/011/004/0604/0609 -~',AUTHOR:.:Gorolikp.V.S.; Zholudev, Ij S. Sushchinakiy, H. M. ORIG." FhysicB Institute in. P N Lobedov AN SWR (FisichoskV institut AN S5M) ~Inetituto of Crystallography AN SSSR (Institut kristallografti AN SSSR)~ .TITLE: Study ofthe Raman spectrum of.N&N02 single crystal near the phase ~:transition point, .~~OURCZ: Krista.3.1o.graf Iya, v. 21, no. 4p 1966, 6o4-6og 1OPICTAGS: a6dium.compoundp.Raman spoctrum,~phase transition, ferroelectricity, 'tompo _rature dependencel.line broadeningp crystal lattice vibration 'ABSTRACT: This is a continuation of an earlier study (Kristallografiya v. 10, no.~ 335, 1965) and deals with the behavior of most lines of the RAman spectrum of singlo-'crystal-Nah'02 In the temperature interval from 30 to 178C. Principal atton. tion was paid to the sma.11, temperature rango.(+ 200) near the phiace tranaition point (160C)i The'single crystal was a rectangular rWisin 3 x 7 x 10 mm, cut so that its smallest Bide was oriented along the ferrooloctrip 'axis z. The Raman topoctra were mercury line for ewitation.. photographed with a spectrograph, using the 4358 548.0*535.36 Card 1/2.7 ---UDC --------- - -09461-67 '.ACC r4R:4AP6o24666 Seven,linos,woro registered# whosefrequonoios agreed essentially withthoao pub. _,,Aished earlier. Tho Raman spectrum obtained nearthe transition point differed notic0ablyrrom. that obtained at 30C. The low-froquencylines shifted In linear fashion while the higher frequency lines exhibited practically no shift. All ob6. served lines broadened with increasing temperature, but the broadening of the low- frequency lines was larger, Some of the lines vanished with increasing tomperature.1 A group-theoretical analysis Iof the.spectrum for both the high and the low frequency! -parts of the spectrum is used to interpret the results. The vanishing and the in- 'tensity variations of the spectra agree with the selection rules', and the broadening! is duo to ordinary temperature offecto'connected with the increase of the inter-._ action between the lattice oscillators themselves and the interaction between the lattice oscillators and other degrees of freedom of the.crystal. The authors thank ,FTofessor P. A.Baxhulin for interest in the work and also V. I. Mursin for valu- able advice. Orig. art. has:.4 figures, 1 formulap and 2 tables. SUB CODE: 20/ SUER DATE.- 03!VJC~CoS ORIG W 012/ OTH REF.' 005 ca~ 2/g L 38900-66 E,','T(l) ACC N& AP6029724 -,SOURCE CODEs Uri/0109/66/011/005/0966/0967 AUTHOR: Zernov.-D. V I Timofevey. P. V I Eursov. V, Sol Hi n.-- t.V a G V Spavski-Y. B. I.; Vileader. R. A.; Grozdoygp. S. D I Shemayev, At X 1 SoIntpeyL Kuzovnikov, A. A ; ZaXtsgX, A. AL.I VasilInva, He 14 Mitoak.-L-12f; RUbiningo Ye ~H-;,Q21udejA. ORG:..ndne TITLE tl Nikolav Ileksandrovich KaDtsoil -967 SOURCEv Radiotekhnika i elektronikap ve 11p n6., 5p 1�66) 966 TOPIC TAGSs electric engineering personnel# magnetron, klystrong corona disahargep -conduction# gas diacharge:plasma:, as g ABSTRACTi . x, A~ Xapt3ov passed sM 10 Febmwy 2966. No vas student ~_*f the 9=ous P. N._ZAbodav, and parformod zW fundawntal inve3tigatims 'in the devolopmant of tWorn electronics, He va3 the creator arA Uader, Aha chair of electronics of Moac dev loped the *ano ow State University, He o icept of Phase grouping of olectronso His ideas are the basis for the daydop- zont of tho ~IwmtroRQ klystron i~Ho developed the concept exp2aining-Abe Phanomonoa of corana discharge. He also developed ideas connected with- ~,ormation of gas conduction and pben=oua In a gaseous-dUcWge plasm. Ka*ov servod for yews as the head of the -pbpioal laboratory and am-, sultant to the Moscow Eleatton Tube - Plimt, He was Us authW of =Wrow 'bookaj in* ludin qlWeioal Phenomena In Va== and in 048880 1&10h translated Int6 forelp 2anguages; he also as" ad taugbt m"aw 'electronics couraeso: (JPRSt 36v5011 -SUB CODE: 05v09 :SUBM DATEt none '002 QVI'V J09 IF ?5. X L 09462-67 EVIT (1)/EVIT (m)/CWP (t)/ETI XJP(c) JD/GG ACG NR: AFG024667 SOURCE CODO; UR/0070/66/011/004/0610/0613 AUTHORI: Zholudov, 1. 80; Romanyukp No As v State University (Livovskiy gosudaratvonnyy un ORIG: Vvo ivarnitet); Institute 0 CrystMosraphr ARFM-R-Trn-a-titut kristallografii AN' SSSR) TITLE: Dioloct a P;%Ortios- of olampod Rochono-salt crystals no, SOURCE Kri-stallografiya, Vo Ilp 41 1966, 6lo-613 TOPIC TAGS; farrooloctric crystal, piozooloctric crystal, electric hystorosis, dielectric constant# pressure effect, Curio point, electric polarization The authors report an investigation of the domain structure, the .~hystvrosis lqop, and the initial dielectric constant of Rochollo-salt in: ysta~lj _9r ,:the rogion.of the upper Curio.tomperaturo for difforont dogroos of comprossion of ,the samples. The tests were made on suqaro polished plates with 430 X-cut, moasura. iing 10 x 10 x (0.4 -- 0-7) mm. ~ho samplos woro moasurod on a microscope stage in: L :a thermostat oquipped,with a dovico 'or aimultanoous or succossivo compross4-cn of T the cryat&13.in two mutually porpondicular diroctions. ,his apparatus vas dos- cribod in an earlier paper (Kristallograflya Y. 40 no. 3, 710 717, 1939). Th Card 1/2 UDG:. 348-0:337.226 J ~L 09462-67 iACC NR: AP602466? i :dielectric constant was moaaurod'vith &.bridge and a hysteresis loop was,by means of a Sawyer-To4er circuit.. The domain structure was observed visually and photo. 'graphed vhon n cousary. 'the results showed that the dioloctria constant decreased 0 ;with increasing compression, the uppor Curio point increased in the case of-iini- "lateral compression and decreased in the ease of bilateral compression, and the 7 ~hystorosia loops gradually contracted to lines with Increasing compression. The results agree with modern theoretical notions concerning the laws governing polari-4 lzation of forroolectrics and explain tho radiative changes occurring in the 'dielectric properties of forrooloctric materials. The results also serve a3-a con- !firmation of the frequently used "internal field" model for the explanation of the ipolarization of the forroolootrio. -0-rig. art. has: 3 figures. w ISUB.ODDS: 20/ DAM' 15JU1631 Opir, nw: 00)/ OTH REF: 006 IC L 09461-6 ACC NR: AP6024656 SOURCE CODz: W0970/66/011/004/~604/0609 Sushchinakiyo M. M. Gorolik 'V. S1_Z_h 0_1 U_d_oyj., 6) ..,;:'.ORIG: Mysics institute im. pe N. Lobodov AN SSSR (Michookiy in3titiit AN SSSR); ~Inatituto of. Crystallography AN SSSR (Institut kriatallografil Ali SSSR) 'TITLE.' Study ofthe Raman spectrum f-XaX02 single orystal noar the phase 0 transition point ~0 URM; Krintallografiya, V. 3.1, no. 4, 1966, 6o4-6og ~.TOPIC TAGS: so~dium compoundv~Raman spectrum, phaso transition, for'roelectricity, -temperature dependence line broadening, crystal lattice vibration 5ABSTRACT: Thiq is a continuation of an oarlior study (Kristallografiya v. 10, no. 3, 335,1965Y and deals with the bahavior of most lines of the Raman spontrum of 'singlo-'erystal N&N02 in the temperature interval from 30 to 178C. Principal atton- was paidto the small temperature range (t 200) near tho phase transition point ..(160C). The single crystal was a rectangular prism 3 x 7 x 10 mm, out so that its smallest side was oriontod along the forrooloctric axis z. The Raman spdctra were photographed with a'apeatrograph, using the 4358 moroury line for excitation. pard 1/2 09461-67- ACC NR: AP6024666., Seven lines were registered, whose frequencies agreed ossontially with those pub- lishod earlier The Raman .spectrum obtained near the transition poirt differed n6tic*oably fro; that obtained at 30C.:.The lo-w-froquency linos-shiftod In linear fashion, uhilo the highor frequency lines exhibited practically no shift. All ob-. -served lines broadened with increasing temperature, but the broadening of the low- frequency lines was larger. Some of the lines vanished with increasing temperature.' A group-thoorotical analysis of the sppetrum for both the high and the lov frequency, parts of thospoctrum is used tD'Intorprot the results. The vanishing and the.in- i ns of tho spectra agree with ihe soloction rulos'#' and tho'broadoning; is duo to ordinary,-tomporaturo offecte.connectod with the increase of the intor- action between the lattice oscillators themselves and the interaction between,tho lattice oscillators and other degroos of freedom of the crystal. The authors thank Professor P. A. Bazhulin for interest in the work and also V. I. Murain for valu- able advice. Orig. art. has.* 4 figures, 1 formulat and 2 tables. SUB,CODE: 20/ SUBM DATE: "G-Of~4(65 ORIG REP: 012/ OTH RV: 005 Card LI fg, . 1 4 ill ! i 1,41;` MR, ~ R, 1, ill I-I I ;R1411 III IIJHNIA~ 10i'll i ~i " ~ ; L 79`~--6e F-7 d)/WT,'1 'k) -2 AUTHORS: Vlokh, 0. G., Zheludev, 1 ORG: none 49 S., ShambUrOyl 71 A.. A-' Eleotrooptioal modulator. Class 42, No. 175272 SOURCE: Byulleten' izobrateniy i tovarnykh znakov, no. 19, 1965, 85 21, 49, 5-S TOFIC TAGS: electrooptic effect, electric field ABSTRACT: This Author Certificate describes an electrooptical modulator conaisting of crossed polarizers between which is situated a crystal in an electric field. The direction of the electric field is parallel to the directi(m of iight and the axis of symmetry. To eliminate the treatment of the crystal aurface and the in.fluence of temperature and moisture of the surrounding medium an its performaace :and also to elimin te turning the optical axis through ap angle of 22-50 under ,nonresonance condition, use is made of a pentaerythritol crystal. SUB CODE s OP/ SUBM DATE 26.Tan63 UM 621-376-9 Cl=d 11 ~l t 7 :. I, . I I '45111 11, 1, 11 ]!`Ill I i~ ~ 11' "fl ~ I ~ 111-11, 1 il-i ~ ;. . , I I I, !I T f I I .. x I I A a F i ~ ; ~~ :1 ; : :111111, 111111 11,11 11 V411 "I'll, : T f ; i.' . % ,: I s. " I I IEII li~ 11] 111011 "', t i - -t ~, . 4- ~1 ;; - ; ~tj AUTHOR: Zheludev, V* I (Moscow) SOV/179-59--3-38/45 TITLE: On the Supersonic Flow Past a Flat Quasi-tria ngular ShortVing (K,averkhzvukovomu obtekaniyu ploskikh kvazitreugoll.nykh kryllyev malogo udlineniya) PERIODICALs Izvostiya Akademii n1auk SSSRI Otdoleniye tekhnicheskikh nauk, Mekhanika i mashinostroyeniye, 1959, Nr 3... pp,202-203 (USSR), ABSTRkCTi work is based on Zheludev's work (Ref 1) describing~ a method of determining the.velocity potential iwsuper- sonic flow past thin bodies. The complex potential, Eq (1), is~'taken from Ref 2, where 2a(x) - wing pan and + = upper and lower half-planes re.spectiv:ly). The limiting conditions for the velocity potential is, given as.Eq (2), th e partial solution of -which is defined as Eqs (3) andj(4) and their harmonic:functions as Eqs (5) and (6). The latter can be expressed in the form ofthe aeries,(7) and (8). The coefficient of 'pressureforthe triangular wing, c can be shown as Eq (9) ~ for a (x) = x/tg 7L ,, where _p th wins's Card 1/2 angle, z coordinates of the span, This co:fficient i [ 1. :, , . I ~ I ~ li. i, : 11 ill . ~ ; i ! z 'U .1 i p, I -'i ..t 1 AUTHOR: Znelu P. 1 _,-(Moscow) ..... ... .--- ORGs none .:TITLEs Aerodynamic characteristics of a thin finned b SOUECES., AN SSSR. Ilavestiya* Hekha'nikaj no, 6p 1965p 122-123 TOPIC TAGSt aerodynamics, aerodynamic dharacteristicy aerodynamic coefficient, com- plex function -ABSTP are oalculatod for a cross4inned ACrz~~,'Thq aerodynmia,-mom nts~ arA.c6efficients bodr- at angle of attack and- alde--all-p- in supersonic flow ("0 Fig. 1). '777'. go :64 1/2 lllll~ Urt[H Ell Acc NR, AP6002)27 A potential flow analysis is used With the flow potential defined by -S W-In M to) +7 77 + This potential is then expanded in inverse powers of and the folloving forces and moments are calculatedt the side and lift forces Z, the three momants My# Ka, and the corresponding coefficients, e.g., 21 (b4 + R14 - Robs) C. e&,� Agar ---0 + 440 (X) 491 Orig. art. hass 8 equations and 2 figures. SUB GODEt 20/ SUIBM DATEt 1Ojul64/ OTH REF: 002 Card 2A Iq 'I TM" I NAM M MI N i MPIN I V I M .11 NMI liII ll~ all Immillmot"ilill. I. 13 i it i i J, Ir J~ i Ili AMR 4i altitapK"il- MINN. iollim Hillimmill, 11R. ll III 1!; 1111 -11iill I ~,ll 11 li E, 1 IS, 11111111 It! I IIII I I ;! I) . ~ ", f I '1 7, t ; 'I . ; , J 1 4 ' :,,t I I I . a z'T, I ~ I i I R I . : If.. I t 1 1 : I I I I z I I 1 11, .- ~! . I HE I mill, M IMER01, H i I I . I I IN`111111~ III " Mill I - 11111 111 U 1, 1,41' i ~ 7 1! 1 1 ! 1 1 ,,,_i. . 67599 000 -59-5-20/41 SOV/179 AUTHOR i Lj~.dev~ P~ I (Moscow) On Supersonic Flow Pasta,Cylindrical Slender Body of Revolution PERIODICAL: Izvestiya Ak-ademii nauk SSSR, Otdeleniye tekhnicheskikh Unuk, Mekhanika i mashlnostroyeniye, 1959, Nr 5, pp 118-121 (USSR) with ~ABSTRACT: The flow past a thin pointed body of revolution. thin wingsPof small aspect ratio is considered. The equation of motion, is given as Eq (1.1) for the limiting conditions:'.of:the potential velocity (p = T + ~p 0 defined s Eq (1.-2). After substituting the derivates (w + ~f) in the right',term of Eq (14 1) the of go Poisson equation can be obtained, the solution of which can beshown as Eq:(1.3). The potential velocity with the first approximation can be shown as Eq (1-5), where 2a(-k).-- span of wing, a - angle between the axis of the, body.and an undisturbed flow, R = const radius of the body - :The limiting conditions for can be derived from Eq.(1.2) and presented as (fg,a) for the aurtace,.' Eq (l* of the body$ and as Eq .6b) f.yr/th surface of the wing*' 'I Card 1/2 An effect of the term M2 1) T in Eq (1.1) can be 00 67599 SOV/179-59--5-20/41 On Supersonic,Flow'Past 'A~Cylindrical.Slender Body of Revolution. derived from Eq,(2.1) which is obtained front Eq (1-3). Since Eq.(l 1) cannot be describedby the conditions, Eqji.6), t~e limiting conditions are given as Eqs (2.2) and (2~3),, Pich can be written as.Eq (2.4) f or the function . (P2' ~The solution of the latter in respect to the.upper and-lower half-planes are given by.Eqs (2.5) and (2.6), respectively., An effect of the component in. the second bracket of the righthand part of Eq (1.1) can be found.from,Eqs (3.1) and (3.2). An effect of the component in the 'third, bracket of Eq (1.1) can be obtained from Eqs (4.1) alnd.(442). The sum of the latter two equations.gives the,potential velocity with the second oximation The formulae(3.2) and (4.2) can be appr represented as series the coefficients of which can be derived.from the.limi;ing conditions in the form of E4~(1.4) as shown at the bottom of p 121. There,are 3 references, 1 of which is Soviet and 2 English. SUBMITTEDt December 10, 1958 Card 2/2, AUTHORv ZheludfiY-,-P*-I-.'-(Mo scow) SOV/24-58-9-10/31 TITIM-., The Supersonic Flow Round Blender Bodies of Rotation With andWithout Tail Units (Sverkhzvukovoye obtekaniye operennykh i neoperennykh tonkikh tel vrashcheniya) PMODICAL: Izvestiya Akademii Nauk SSSR, Otdeleniye Tekhnicheskikh Nauk, 1958,-Nr 9, pp 74 - 82 (USSR) ABSTRAM The bodies areIassUMed to have an angle of attack (z~ and to have their tail.units inclined at an angle 0 to the vertical.~ A solution for the second approximation in slender body theory (Ref 1) is constructed. The frame of reference is chosen with the y axis vertically upwards and the.velocity in the direction of increasing x Forces on bodies of revolution having 2, 3 or 4 plane. wings of small thickness with their trailing edges in the plane x = 1 bare given. The solution from which these are derived is*regarded as the first approximation and it is shown that the problem of finding the second approximation.can be reduced to that of finding harmonic functions (as in the ca5e of the first approximation). Hence, it is possihle to solve the problem of finding the velocity potedial of the second approximation for Cardl/3 bodies of arbitrary transverse and longitudinal cross- SOV/~4-58-9-10/31 The Supersonic Flow Round Slender Bodiet of Rotation With,and Without Tail,Units sections satisfying conditions imposed on the maximum thickness.and angle.which any tangent.plane to the surface of the body makes with the direction of the undisturbed'. flow. These quantities must be of the order of the maximum thickness-of the body which in its turn must be very much less than.the length of the body. In addition, the radius of curvature of.an arbitrary transverse section must be of ,the order of d-1 , where d is the maximum thickness of the section. This condition is imposed on convex sections but not on concave ones.: As an example, a circular cone of apex angle 20 1 is considered. The expression for the pressure coefficient at zero angle of attack coincides with that obtained by Broderick (Ref 2). with the exception that a term of the form; M2 1)] d, does not appear. This term can be introduced Into the Card2/3 expression by using results of Van Dayk (Van Dyke)4ho -58-9-10/31 SOV/24 The Supersonic Flow Round Blender Bodies of Rotation With and .-With6ut Tail Units considered the case of an elliptic cone at zero angle of attack.~.The results for the revised formula are given graphically in-which they are compared with the results of exact theory and the first approximation. The'com- parison shows that for sufficiently slender cones the, secondapproximation dives better results than the first approximation. -A similar graphical comparison is made where the abscissa is an angular co-ordinate in the plane x - constant rather than the Mach number. The.second approximation again gives good Sesults and the overall conclusion is.that for 01 4 15 a better agreement with experiment can be expected from the second approximation. There are 6 figures and 6 English references. SUBMITTED: February 7 1958 Card 3/3 [ACC-NRi AP6024194---- BiomfcE-CDDXt-Wld"1661006100~101'6010165' iAWHORt Zheludev, P. I. (Mo cow) ORG: none i TITLEt Bending flutter of rotating,olongating bodies SOMCE: Inzhenernyy zhurnal. Mekhanika tverdogo telat no, 20 1966l 160-165 'TOPIC TAGSs elasticity theoryt supersonic flow, unsteady flowt aeroeleati city, vibration ::-ABSTRLCT: An analysis is made to determine the effect of longitudinal acceleration and spinning motion on the el"tio bending vibrations of an elongating bou in a-low /supersonic flow. As shown in Fig. 1, small unsteady motions y(x,t) and z(x,t) are added to the variable longitirdinal motion U and the body is assumed to be an elastic beam of variable cross section. The governing equations of motion are given by '21611 + 2y (4 TXFJ w, P r S (,) , I a- WX [P T-tx i (X) 2 9 PS W Y(X, 1) 17 -:I- [P1 V) + pS (s) ay w. IN j). + 20gw at - Z~(-- 1) Card V2 . I ! I I 11 LMLIll I -DD -I. [i.1 I i I I'll:I V-fi-P, 09- AUTHOR: Zheludeva G.A. 109-3-io/,23 TITLE: ~he.Antimony-caesium Cathode (0. rabote vykhoda surlmyano-tseziyevogo katoda) .,PERIODIOAL: Radiotekhnika i,Blektronika, 1958 Vol.IIII INO-3 pp 195 - 399 (USSR-3. ABSTRACT: The investigation reported was primarily concerned with the determination of the photo-electric work function of the fft)-Cs cathode as a function ofthe wavelength of the illumin- ating source. The magnitude'of the work function wasevaluated from the Einstein equation and attention was focusid on the magnitude~of the relative value of the work function rather than its absolute.value. The investigation was done by the sphurical- condenser method and two types of photo-cathodes were prepared. One of the photo-cathodes was a cylinder having 1 cm, dia.-and a-length of l.cm, while the second cathode was in the form of a glass sphemoll cm diameter. The cathodes had the usual "dark cherry" colour if deposited on glass and a grey-green colour if-deposited on nickel. The collectors of the spherical condenser were in the form of spherical bulbs, having a diameter of 12,or 15 cm and were coated with a layer of alumin- ium. plus a thin layer of soot (to eliminate the reverse Cardl/3 currents)* The photo currents were measured by the potentiometer, Vork 1runction of the Antimony-caesium Cathode 109-3-10/23 method by using an electrometer, so that a sensitivity of 10-13 A could be obtained. A quartz monochromator was used as alsource of spectral lines. Current voltage curves were taken for the following gavelengths: - 5791, 5461, 4047t 3651s. 3130, 2804, 24829~2200 A; the curves are shown in the figure on P. 397. The'work function can be determined from these curves by finding their intersection pointB with the horiz- ontal (voltage) axis. It was found that the work functions of both the cathodes are independent ot. the illuminating wavelength fo the ran 6 5791 to 4047 A. In the range 3130 to 2200 the wogrk function is also constant, but its value is.somewhat lower than that for the range of the longer waves. An attempt was also made to determine the "red boun- dary" of the photo effect and it was found that the Fowler method could not be used for this purpose. The author expresses gratitude to Professor B.A. Kaptsov for.directing this work. There are 1 figure, 1 table and 10 references, .6,of which are Russian and 4 English. ASSOCIATION: _:Chair of Electronics of Moscow State University imeni M.V. Lomonosov (Kafedra blektroniki Moskovskogo Card2/3. universiteta im. M.V. Ioomonosova) .1.1 .11 G.A. abd Akhmatova, N.A. 109-3-11/23 AUTHORS: Zholudeva, TITLE, -Xn-e-rgy7I_)1s_t FIRM on of the Photo-electrons in the Antimony-caesium Cathode during Various Stages of its Pormation (Raspredeleniye fotoelektronov po energiyam, dlya surlmyano-tseziyevogo katoda na raznykh stadiyakh yego formirovaniya) PMUODICAL,*,. Radiotekhnika i Blektronika, 1958, Vol-III, 110,3 pp. 400 - 404 (USSR5. A13STRACT: The investigation of the energy distribution ofthe photo- electrons was done by the spherical-condenser method. The .-investigated cathodes were prepared as follows: a layer of Sb was deposited by evaporation on to a glass sphere. The layer, had a thickness of 15004 and was not transparent. Theacti-I., vation process followed.the standard technique, i.e. ,the 8b 0 layer.was treated by Os v6pours at a temperature of 180 C. Three types of the activated film were prepared. The first stage was characterised by a straw-yellow colouring of the emissive surface; the sensitivity of the surface was 0 I'V, that of the normal Sb-Cs cathode'. The second fil cor;esponding second activation stage, had a light-r to the ed co ouring and its sensitivity was 0.6:.,.that of the standard cathode. Finally, cardl/Pe third blathode had a~'6herry-red colouring and thestandard 109-3-11/12 3 Energy Distribution of the Photo-electrons in the Antimony-caesium Enerl Cath4 Cathode during Various Stages of its Formation sensitivity.(2B sensitivity.was tLken as unity). Current voltage curves of the three cathodes were taken at the foll-, owing wavelengths; ~5 461, 4 047, 2 805, 2 482 and 2 300 A. The resulting curves~are shown in Figs~ la, -6 and b. The curves we're used to evaluate the work functions of the cathode .,by employing~the Einstein equation and it was found that these were 1-78 + 0-05, 1-56 + 0.05 and.1-51 + 0-05 eV for the first second ind7third active7tion stages reapectively. These values', are valid for the,wavelength of 2 A05 A. By differentiating the current voltage curves of Fig. 11 it was possible to obtain theieurves of'the photo-electron energy distribution; these are shown in Figs. 2a, Ey,aDd b; curves of Fig. 2a correspond to the wavelengt of 4 OLrl X, those of Fig. 26 are for the wave- length of 2 805 k while Fig. 2b corresponds to the wavelength of 2 300 X. The authors thank Professor N*A. Kaptsov for directing this work. There are 2 figures and 4 references, 2 of which are.Russian and 2 English. -ASSOCIATION: Chair of Electronics of the Physics Faculty of the M6scow State University im. M.V. Lomonosov Card 2/3 (Itafedra elektroniki fiziche'skogo fakullteta 83929 S/188/,60/000/004/003/014 711& B005/Bo6o AUTHORS: .2helUdevat G* A* LM,v-Bln-i, TITLE: Energy Distribution of Photoolectrons of an Lntimony Cesium Cathode ))uring Its Treatm&;T~With Oxygen PERIODICAL; Vestnik Molskovskogo-universiteta.-S6riya 3, fizika, astronomiyat.1,960t No- 49 ppo 26-31 TEXT:~ The authors-of the-presentrpaper studied the energy distribution of photoelectrans~of an antimony -;cesium cathode under three different conditions: prior to sensitization with oxygen, after sensitization up to'-the peak,value of the photocurvent, and after poisoning of the cathode by eXCeSS OXYgen.:Thia..poisoning was darried on until the veneitivity~of the oathode.,bercameequal-t*~, or a little lower than, that before bensitization. The method of-the retarding field in a spherical condenser was used.to draw the energy distribution curves of the photoelectr,ons and to.measure the contact potential difference between Cathode and anode. The experimental arrangement is described. Fig. I has Card 113- 83929 Epergy..Distribution of Photoolectrons of an 8/188/60/000/004/003/014 Antimony -.Cesium,Cathode.During,Its B005/BO60 Treatment With Oxygen three.diagrame,ohowing the retardation curves of the antimony - cesium, cathode under the three above conditions for the following wavelengths of.light-,'.546i A, 3130 A$ 2804 A, 2482 A. The analysis of these curves yielded the following results*, When sensitizing the cathode with oxygen. up to a peak value of the pho tocurrentl the value of the saturation 'potential rises by 0. 6 t 0. 1 . v. Investigations revealed that this growth is.mainly brought about,by a decrease in the thermionic work function of the cathode on a treatment,with oxygen. This decrease is about 0.4 ev-~ On.a. further treatment of the cathode with oxygen (poisoning), the saturation potential (toes not:echange,until the sensitivity of the cathode has dropped to1he pre-,sensitization value. The saturation potential, -risee little with'further poisoning. The~mentioned decrease in the thermionic work function of.the cathode on sensitization is a ~-conseqixence of a reduoled'potential~threshold, and fits the change in the 1hreshold frequency of the.photoeffect.'Fig. 2 shows the spectral characteristice of the antimony cesium cathode prior to and after, Pensitization in a (log 19 hi) diagram,(I photocurrent; h energy in Card 2/3 63929 Energy Distributlon of Photoeleotrons of an S/188/60/000/004/003/014 Antimony athode During Its 060 Cesium C bO05/B Treatment With Oxygen,, ,ev).-By:graphically'ditferentiating 'the curves shown In Fig. 1, the duthois'obtained.thelcorresponding-ourves for the energy dlst~lbution of 1he photoIelectrons of the~antimony - cesium cathode under the three conditions,inve,stigated. Fig.~3 shows these curves for the wavelength ::.2804 A. It.may be seen that the changes in the energy distribution curvaq '~:of the r na due to cathode.sensit~zation can be solely photoslect o explained by a dearease,in the work function of the oathode. The energy structure of the cathode need not necessarily change in this conneoticn, It is only on the poisoning of the cathode-with excess oxygen and when the cathode loses its sensitivity, that the character of the energy spectrum of the electrons, and thus also the energy.stru~~turs of the cathode, undergo'a change. Thers'.are 3 figures and 5 Soviet references. ASSOCIATION- Moskovskiy universitet Kafedra elektroniki (Moscow Univeriityl Chair of.Electronios) SUBMITTED: No 959, vember 27, 1 Card 3/3 WW6 5/109/62/007/009/015,/018 D409/D301 AUTHOR,:,.. Zheludeva, 0*A* d: TITLE: Influence of. fatigue of Sb-Os cathode on the energy distribution of photoelectrons P.~`,'HIODICAL: Radiotekhnikai elektronikap V. 7P no. 9p 1962, 1637 1642 TEXT: The author's,tUdied the:irifluence~of cathode fatigue on the energy.distribution 6f photoelectrons by the method of delay cur- ves'. The experimentai apparatus was similar to that described by the author in,an.earl~Ler,work..,The cathodes were-preparea on vari- ous bases (electrolytically-pure nickel, quartt, molybdenum-glass). The delay curves were plotted at 3 different moments of time:-Imme- diately afterthe preparation of the experimental tube, one month .1aterp and after,10 months. Thestudy-of cathode fatigue started 3-4 weeks after the preparation of the experimental tubes, i.e. af- ter the-properties of the.cathode viere fully stabilized. The fati- -gue'resulted from 'continuous illumination of the cathode. The mea- surements~of the cathodecharacteristics were conducted before and Card 1/2 N-`M ,TP S/109/62/007/009/015/018 Influence of. fatigue of-. Sb-CS D409/D301 after the fatigue,procees. The results of the measurements of all. _-:._wthe investighted cathodes are.similar; the integral sensitivity of the -cathodes with nickel,base was' reduced to-half its value as a result of the fatigue (which lasted about 200 hours). In the case of.cathodes with molybdenum-glass basep the sensitivity decreased to 68 % of its initial value..The photoelectric work function in- creased slightly after the fatigue process. The energy spectrum,of the photoelectrons after fatigue, differs from the energy apectrum prior to it-The maximum of the energy-distribution curves is shif- ted,~towards lower energiesi i.e. the energy of the electrons de- creases as a result of the fatigue# It is noted that this chancge in the energy distribution is very similar to that, corresponding to a~transition of the cathode from a state of normal activation to a state of de-activation. In both processes (fatigue and,.de-activa- tion)# the relative number.of fast electrons increases, whereas the -~~,number of slow electrons decreases. Tht obtained results lead to the conclusion that~.cathode fati gue Is a bulk process, i,e. the fa tigue.(under the action of light and the applied voltage) involves substantial changes in the cathode material itself. There are 6 fi- gures. J.- SUBMITTED: 'October 20, 19611, Card 2/2, 115 53 t88 62/000/005/001/008 B 02 B108 cr ~;AU THOR s ,Zheludeva.-G. A6 TITLEt Effect of the electron yield depth of. athick antimon -cesium, y ~cathode on the naturs..of their energy distribution -PERIODICALs Moscow. Univereitet. Veatnik. 8 riya III. Fizika, e astronomiya, no., 5,.1962p 3 9 TEXTt The-photoelectron energy distribution under frontal illumination - was studi,ed onSb-Cs cathodes of d1if f erent thicknesses (toot series 1)t as well as-theeffect.of:.the direction of'Illumination on this energy, distribution (tost.series 2), the cathodes haiing been produced under com 'pletely equal conditions.., Cathodos of different thicknesaes, however, have different sennitivitioa., A oathode.oir ordinary,thickness (- 150.01) Is more densitive,.than a thinner one, and if the cathode thickness exceeds, the effective electron yield depth the "thickness effect" ceases to be 'obeervable*'-The sensitivity ota cathode (1) 5300 R thick was 40,ua~ Iz -t of a cathode (11) 1200 1 thi k w and tha 0 as only half as muchp although at such a thickness'no thickness effect should occurs The measuromente were Card 1/3 301188/62/000/005/001/008 Effect of~the electron yield.. B102/B108 made in the range of wav3lengths' on cathodes'of the thick,. of 2200 4047 i nesses of 490, 1080t 1200, 1600 and 5300 Alicathodea were produced in the same tube on a quartz'backin'g.according to a method described in 11Izv. AN SSSR11 ser. fiz. 12, no * 2, 126 - 143, 1948- A comparison between the results obtained with the cathodes I and IT shows that the photoelec- trio work function of IT is higher.than that of It also S of IT was higher by about'O.1 ev than,that of IG.b is the-distance, measured in ev, between the top of the filled band and,the:.6lectrochemical potential level. The energy distributionsof.the electrons from I and IT are different*.; IT emits~,more numerous fast andlewer'slow.electrons than Is, Henoe, it can be.concluddd that even if the thicknesses of the electrodes under con- sideration is such as to exclude a thickness effeotp they still differ in their most important physical properties. 'In the second test series the ~~:-difference in frontal.and backwardillumination was studied in I and IT 2 with light of. 246 Some of the'results were' un6xpectedo e.g.f the energy spectrum of -the Illow". eleotrono'contains more numerous fast and fewer slow electrons than that of-the "surface" electrons. The energy distributions of the"I'low" electrohs,are the same for I and II. In order Card 0