SCIENTIFIC ABSTRACT LEVSHIN, V. L. - LEVSHINA, K. V.

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CIA-RDP86-00513R000929710011-1
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December 31, 1967
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SCIENTIFIC ABSTRACT
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T, ' 7141-65 ACCESSION NR: AP5000551 mixing. The sublimated phosphors were prepared by evaporating the initial compounds in acuum (5 x 10 5 mm Hg) at 150-3500for 10 minutes, the details being described elae- ~,here (Izv AN MSSR No. 1. 1963). The absorption spk,,ctra were mpasurf-d .,.-ith an SF-4 n,) t -).,n f q c~ f, 1-1.sina ar,;: 7-,~ :r, he 3-50-- n-i rP2~inn was N A fi-- ,t that described bN j061. ,'Ale radiation !5pev-tj awere Me.1-SUre(I photoel,N-tricajiv usirif-r an ISP-51 -i---~tzraph. with the excitaiion 5~ 1,he 36 rn of 1, 2.5, and 505o. The results shu~N that al room temperature the glow of the mixed Cd12-Pb12 phosphors is due to the lead ions, the environment of which contains in addition to the anion There are at lepst two -r more lui-n4nesrenll censers. lie ierine in their absorption and radiation spectra and in the lwninescence yipldl. The prin- 1,):Il centers a-re produced at low je-a(I -i. -i; :ea-1 Tlie -,-~-,onciarv - uflieer,i axe promcea only when tne lead content is high ard pr Ihalll.~ include cwo lead ions .1,arow - o 1) fi e rv (-1 at larjfe P-if, c,,rrt t-s q -be t~,) the The conceptration wench:ng 'en Lz:j M o the cr vstal - 3 ACCES9109 MR: AP5000551, -ture in a single compound art inures and I table. ;tru( Ori~~ 9: 5 fi ASSOCIATION: None ~7-3."'IITTED- 20Jan64 ENCI- 00 SUB CODE: OP NR REF SOV: 013 OTHER: 004 !Card 3/3 Arta physica polonica, v. 26, no. ig6h, 455-h68 ~ 7 0 ,, , 6 6 C7, rR A ?'~(X)12959 Ccmmotmd and solv,~nt LJJP t G I 7M ACCESSION HR: AP5010039 th~%66/65/002/00S/0115/0125 A T-shin, V. L.: Prilman A, Chikhacheva, V V. Rare earth elementt3 as acllva,o.- -f z'-!~r ".1- c a t ~-grje Z-hurnal prikla-inr-y c:pe,r'r-nk-cl I ~'T TTAGS: zinc sulfide optical material, cal-ho(le luminescence, earth activator, transitiDn freq1-ier,-',, Integral luminescence yl,~Id, emission spectrun T 3---l' A C TThis is a cc%tinuation of earlier studie-- (Izv. AN SSSR ~2, 19~-,) and --ac~ ion we e n t nors prepared under cantrollea C QrIQ II UT I UCLZ MA C 1/4 17"3 L 1.930')--65 ACCESSION NR: AP5010039 I~A P Prt exerted on the -'son luminors, In c)rler to U!Cer"'- t_ht- ff L 5 ACCESSION NR: AP5010039 T ASSoCIATA.ON: None 1 -EM' 7FED: 23ju,,64 ENCL: 01 SUB CODE: OP, SS NR REF SOV: 015 OTHER: 010 Ca,d 3/4 ACCESSICU NR.- AP5010039 Dr-LOSURE: 01 -01 Table 1. Relative energy yield of 7nS-TR phosphor luminescenne -A kt-msphere- Atmsphen-- Elenent rlemnt H,S S ce4. P IVA I D, 6i JO ~,I,e 9 7.! 2*2 34 /4 7j; L 258el.4 M O/AT ACC N9., AP6001481 SOURCE CODE: WI"3 AUTHORt Goryunov, V A.; Levehin, V L ORG,.. None TITLE: Thermostimulated and photostimulated ZnS_Cu single crystal conductLvito SOURCE: Zhurnal prikladnoy spektroskopii, v. 3, no. 6, 1965, 504-509 TOPIC Tki: photoconductivity, single crystal, crystal phosphor, luminescent crystal ABSTRACT: Photoconductivity studies in phosphor crystals can contribute to the Understanding of luminescence. Can-seque-ntly, the authors studied the thermo- stimulated and photootimulated conductivity in ZnS phosphors. A detailed des- cription of the experimental setup is given and the data are discussed. Tests sh d that e . IF 1.2A( m1radiation releases electrons froni all trapping Welf (.155, _13w3y and 68C) whereas 2.4%and 3.15 A m light acts only on the -155C level. The number of electrons released by the 3.15-and 2.4'A m lines in close to the number of thermally released electrons from the same -155C I vel; thlb points tot insignificance or even complete abset(ce of quenching 6f phot:conductivity during the electron release.from the give.n'level system. The opposite seems to be-true., rd I Z' _'U.DG: 5.35-,,37 6~ ACCESSION M. AP5005051 8/0051/b5/0 JWR1034'0330- AUMORt Divehi As V. L.1-Tutdto F. ilk TTMS*- On, sm~ Imineseence acteristIcs aff Zr&-Mn phG--,h=s -a the 15--77K region SUM"Mi Optlka i spektrookoplye, v. 18, no. 2, 1965 t 328-330 I 4~ 7T~r 7r f: 4- 1 mA t e r 1 &1 1 rw lemperature research A3.37RACT: The authors have extended their err1ler researches on the lumineacent -laracterlett-n of ZnS-Mn phosphore t- lvwer mperatures k0pt. i spektr., v. pm! s t4 or, sp--tra is C L -nt r'!stiltp. wa r ii n i! rl !n t1- qt-17 Fiv vi -a n;, A r,y T~e 112 -a 7-~ M -- Magenamadmmn, L 34871-65 ACICMSION NM AP5005051 -eq,,dta have shovn that the maximirr of the first thermolumi-nescence peak shifte ~,Iie 17--c- tfmr~-rqtlires, ri x 'he phosphorescence. Orrig. &rt ASSOCIMORt None --V-D - -.N&r64 an;' -nr obgerved peak at 100-120K loes rlumbpr- -~,r v-,al S- P rvS -~mD t bias: 2 ~lg-uxes. 7.'B CODE, OP ~Y V: -,k:120a_66 EWT(1)/EWT(m)/EWkt)/"P(b) 1JP(c) WG/JD/JG SOURCE CODE: Uli/0051/65/019/006/0992/099' Rt AP6001665 14 AUTHOR:- Levshin, V. L. 7 ORG: none ,e; P_ t , W1 ~ '~_ 'I--- TITLE: Fourteenth cdnf u'rence on luminescence SOURCE: Optika i spektroskopiya, v. 19, no. 6, 1965P 992-993 TOPIC TAGS: crystal phosphor, luminescence, optic conference, luminescent crystal, electroluminescence, alkalai halide, recorribinatJovi ltmd.ne,3C1-11Cf!, photoconductivity, electron trapping, color center, laTnr heniti, 3aser effect, If? radiation, rare earth element ABSTRACT* The Fourteenth Conference on Luminescence was held 16-22 September 1965 in Riga,4`under the joint sponsorship or th,-~ Sclenbific Council on Luminescence# t e of Physics of the Latvian Academy of Scienct!~, ant] the Latvian State University. The kinetics of luminescence of crystal Dhosphors, mostly NIRMI-HaMide phosphors, was the general subject of the 220 papers ,presented at the conference. Studies of the alkali-balide phosphors Iincluded such topics as the recombination merhanism and acti- ,vation of luminescence, multiplication of electron excitation (pho- ',tons) in ionic cryataLq, migration of carriers under infrared ex- citation at low temperature, polarization of luminescence in thal- Hum activated mixed 19-KBr crystals. and -f- and x-ray.lum-ines- L 13652-66- ACC NR, AP6001665 cence. Low-temperature emission spectra of polycrystalline AIIBVI-A~IBVI compounds and pure CdSe and US crystals, in-~; 'frared stimulated emission and luminescence quenching in ZnS .phosphors, laser-bearn excited luminescence and photoconductivity i in ZnS crystals were the topics of a series of studies on AIIBVI J phosphors. Intensification of the infrared stimulated flash lumines- cence in US phosphors was achieved by preliminary application of an electric field. A large number of papers were devoted to the study of electroluminescence. In one of these'studies, the threshold voltage applied to US thin films was found to be smaller than the quantum energy emitted. The effect of preparation procedure on "formation of the electron traps was studied in ZnO, ZnS, and. ionic cryAA ihosphiorisi.' Formatioh of color centers. of electronicInature was the subject of study on MeF2 (presumably, Me is an alkaline-earth metal] crystals, activated with rare earth elements.-ilPavers were presented on ihe spectra of the rare-earth elements in mixed'jlttku~p indiump-and scandium cxides.;'-IThe kinetics of photoluminescence was also studied in SiC-K phosphor which was found sensitive to infrared radiation up to lambda = 4.5 zn-mutq Aluminum nitride-1 activated with Mn, Co. Cr, or a rare-earth element was singled out as a new phoi&' 0-0 cathodo-,,.and elect,rolumineacent phosphor# The role of electron and hole recombination in luminesced.ce of alkali-halide crystals,, the nature of trapping 6i~d'.. 2/j in various c of electrol ' rYltal phosphors Uminescence were the 0 chemistry Of crrst Orguized. r0j..thq fir,; t,. at al Phosphors 6) toples Of the Pmeral d P and rm c thi's Conference., gATD 'acussiona wh:toh Vero hanism SUB C01)Et 2 416917 0 SUB14 JDATE: none Carl, 14 MeM I K-4 IJP(c) ACCESSION NR: AP5009503 8/-DO48/65/029/003/0346/0354 ATMOR: Levshin, V.L. re of the excita- Features of cathodoluminescence due to the electronic natu t ion /Report, 12th dmiference Gn Lum3neacence hold In L'vuv , 30 Jan-5 Feb 1969 14 KVI, SOUMS: AN SSSR. Izvestiya. Seriya fizicheakaya, v.29, no.3, 19651, 346-354 TOPIC TAGS: luminescence, cathodolumlneacence, photoluminescence ABSTRACT: This paper presents a general discussion of those features of cathodo- 'Luminescence that distinguish it from photoluminescence, with a few illustrative examples taken from the literature. The subjects discussed include: reflection and scattering of primary and secondary electrons; Stokes losses (energy loss by non- radiative transitions during thermalization of the electrons and holes, and the emission of photone- with less energy than that of the thermalized pair); internal and external quenching (nouradiative recombination of the thermalimd electrons and hr,letil these processes are due io quenching centers In the lattice and are ver-7 d-.ffer,~nt from their snalog-a in photoluminescence); saturation effects due to the cjr~lltatlon deasity; and deen y of the It Is Concluded that Ph-t Card 1/2 M L 0939-055 AmOO9503 Accsssim uR. lummines once is the more efficient process for transforming the energy of the in-1- dent beam Into lumlrteac~nce, but that, oving to the lcm efficiency of light gources, th,;~ overall transf6rmation of eldctrical energy into 1wainescence radiation Is mom e-fflciently performed by catbodoluminescence. Cathodolwainescer-ce has the further -Mige that in employing It higher excitation den-sities can be realized than are! qtth conventional light gources. Orig.art.haa: 4 forw4las, 3 figures 3 Ubles. O-CIATICIM: Flalcaeuldy 10titut 1M.P.N.lAbodeva AkUtvidl DAUk SSSR (Physics Inatf- j ASV tute, Academy of Sclemsel" c' I4MR) SUMUTrw: 00 &ML: 00 OWBI OP"138 HR REP SMI 003 arM. OP03 h i L. F r id ma n 3 A. V STAJFUCE. AN SSSR. IL4estlva. a Sertya fiticheakay v. 29, no. 3, 1965, 500-502 FOP IC TAG, - cathodoluminegeen ZtnC compow4j %ulf-ar campourt-S, rare e rth . . . . . . . . . . . cadmim compound ;,,-Kic 1 un f :i-, m;;~ orcr- s p,,7 t lnvr-,i igatca(j f(~r 7, a5 ACCF,SSION HR: AP5009532 -escerice in rarrcr,- sp,-ctral regions in the g r c--.- (~2n be, use-3 to obtain lumir, 0I.- !'Sd. The d eca y of the I um i. ne- (,e m- e w, - fou -id t 0 he C,limo i ex 79 po_-6enl,,7--d ff-,r four of the f", th.~se the -vc,3 to I% -,f lt-~ irdfial value_- in frnrl 1 1) 1 () M L _i -,7. kl--a Ly, those prepared in P-25* zi t ,,S. the adMition of CdS barii edges than the materLals perpa-.0-3 in H- o ri:~,,or3hcirs- altered thp relrAlw? Intnasitleg of Lite 3everal bar?ds lrjt ATIV 10-q 'MC-S. TR,.Kif_r.Ujn, fOt' Fit) -IT'';- 'III JU ~1_1- r-r!) 4AS CJS~ Orig. a-t, !iai-. I r:C IA T I ON: NOUQ UTAU Yr ED - 00 XNCL. 00 Sun C ME: OP. SS . . . . ... .... NR REF 3OV-. 002 amm. 000 -'/EW iJp(c ) 91-r! ( 1 T; (m),"E'dP(t) /EWP(b' Pi-4 TD,/JG ACCESSION KH: AP5009533 S/0049/65/029/003/0503/0506 AUT'qcRj__j2r.o.q.q.v,Yu.V,; Levshin, V.L. Inter-action of Sm, Ru, Tm, and Ag activatom In the caLhodolumineacence of 1j! r.' pl-."rg 2, L ~on fe r~.ri~p ()n i nost~ence held I n L'vov Feb 1%4~ AN SSSR . Izvest ly-a . S,-ri y-. f i71 cheskay-4 v . 29 nt), 3 , 1965 , 503-506 TOPIC TAGS: cathodo lumines cone e zinc co-AI".uad, sulfur compound, rare earth, sil-ver, activator intetdCtion V'T Thp cathrxiolLmInescence spectra of doubly activated ZnS phosphors were it 133 ~ij-d 2930K In -rder to inve-stlV-te th~- -Hucts of activator tnter- n -v~~rv casp the prLiaary n, -a,. act;vitf'r w aq f- a -i ;t c r-, w r h.,),i ri r,,- f on r t p- 1/2 ACCESSION NR: AP5009533 The addition of the second activator was found to cause a redistribution of inten- sity in the luminescence spectrum at both temperatures and partially to quench the luminescence at the higher tfimperature. The details of zhe spectra are discussed -nt somme length, and it Is concluded that the high temperature quenching involves an elw~tron-hole mechanism, and the redistribution of intemaith Is connected with sonne -)n, ~i -ionarce interaction between the 1, 1 of the two activatom and with the i. Ti ~7cmtplex conterq. Orig. Pirt. ha~~ I figtire,i and I tahl,-~ -C 1AT 101 None T;a-tf I TTED: 00 E~CL: 00 3UB CCDR: OP, SS RE S a! 0 12 OTRER: 000 ~-Orfl Isla LEVSHIII v.L. -Chara ateristice of the various tYPes Of energy migration in solutionse Izv. A14 SS,13R. Ser. fiz. 29 no.8132-60-1265 165- (~IIRA 18:8) T, 1 -7 4- 66