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THE INTERACTION OF EXCITONS WITH DEFECTS IN ALKALI HALIDE CRYSTALS (in Russian)

Journal Article · · Trudy Inst. Fiz. i Astron., Akad. Nauk Eston. S.S.R.
OSTI ID:4151574
The interaction of excitons with various defects in crystals was studied in order to determine the exciton mechanism of external and internal photoeffect, luminescence, and photochemical transformations in alkali halide crystals. A simultaneous appearance of vacancy centers and electron F centers was observed in previously x rayed and optically discolored KBr-Sr and KCl-Sr crystals at 100 deg K. Interactions of excitons with divalent ions (Pb/sup 2+/, Sn/sup 2+/, Ge/sup 2+/ , and Mn/sup 2+/) in KBr transforms them into single valences. Photochemical spectra show that the maximum F center formations in KCl-Sr, Ti, and KBr-Pb and transformations of P/sup 2+/ and Pb/sup 2+/e correspond to the excitation in the exciton band. Ordinarily several parallel reactions with various capture centers are present in crystals. It is possible to induce exciton interactions with prevailing types of defects in the crystal. (R.V.J.)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-14-017149
OSTI ID:
4151574
Journal Information:
Trudy Inst. Fiz. i Astron., Akad. Nauk Eston. S.S.R., Journal Name: Trudy Inst. Fiz. i Astron., Akad. Nauk Eston. S.S.R. Vol. Vol: No. 11
Country of Publication:
Country unknown/Code not available
Language:
Russian