SCIENTIFIC ABSTRACT PETROVSKIY, G. T. - PETROVSKIY, I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001240620002-4
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 15, 2000
• Sequence Number: 2
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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A U TH C) P S Nemilov, :;.V. n n el Petrovckiv, G.T.
T lT 11 A new method for .-egsuring the viscosity
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-ROVSKly, G.T.
ELrsenic.
MEMILONT,
selenium
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9 r MY
Zhur. J,rlk-1. 'Kh1m. j,.q ico77 (Viscosity)
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EWT,(M)/EW_P(e)/EWPW/ETI IJPW - JPIJGAH
ALU MIts AP0011577 SOURCE CODE: UIR/0051/66/020/003/0519/0521
AUTHORS: Petrovskiy, G. T.; Feofilov, i_-P-j Tsurikova, 0. A.
ORG: none
TITL9: Absorption and luminescence of divalent samarium n fluorine-
beryllate glassed
SOURCE: Optika i spektroakopiya, v. 20, no. 3, 1966, 519-521
TOPIC TAGS: samarium, glass property, light absorptio luminescence,
gamma irradiation, optic transition / j"A_/ I "_ M--_
ABSTRACT:* The authors report the results of an investigation of absorp-
tion and luminescence of Sm 2+ ions in oxygen-free fluoro-beryllate
glasses, on which little data are available, especially the colored
glasses. The glass chosen had relatively low tendency to crystalliza-
tion, containing 60% of molecular beryllium fluoride and 20X potassium
fluoride, and also fluorides of calcium and aluminum. For better Bta-
bility, the reduction of the samarium to the divalent atate was by ir-
6o
radiation with gamma rays from Co The absorption spectrum had a
single broad Intense band with maximum near 520 ran, causing red-orange
color (the glass was yellowish prior to Irradiation). Upon excitation,
I Card UDC: 535-34 + r335.37:546,659

ACC HR, AFffO11577
the glass containing the divalent samarium emitted red luminescence,
with a spectrum consisting of several bands with maxima near 6825, 6960,
0
7200, 76oo, and 8150 A. Some bands had a structure. The luminescence
duration was 3 x 10-3 see at room temperature. It increased to 7 x 10-3
at liquid nitrogen temperature, with a corresponding Increase in the
brightness. The transitions corresponding to the luminescence bands are
Identified. Notice is taken of the high stability of the divalent state
of the samarium, and the glass, which remains unchanged even when the
glass is heated to softening temperature (250 -- 300C). The authors
thank 0. A. Mokeyeva, for help with the investigations of the luminescenc
spectra. Urig. art. has: 1 figure.
SUB CODE:1120/ SUBM DATE: 23Aug65/ ORIG RM 015/ OTH RFY: 010

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