Transformation of Radiation-Induced Molecular Point Defects and Color Centers in LiF Crystals under Influence of Light

被引:6
作者
Bryukvina, L., I [1 ]
机构
[1] Russian Acad Sci, Inst Laser Phys, Irkutsk Div, Siberian Branch, Irkutsk 664033, Russia
关键词
color centers; LiF; hydrogen bond; UV light; light pulses; LITHIUM-FLUORIDE CRYSTALS; ZERO-PHONON LINES; HYDROGEN CENTERS; LASER; OH; IMPURITY; IONS; NANOPARTICLES; COMPLEXES; BOND;
D O I
10.1134/S1063783419100111
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The influences of UV light and integral light pulses from lamps on gamma-irradiated LiF crystals with impurities of hydroxyl and magnesium ions have been investigated. The optical absorption and luminescence of color centers in different bleaching stages are studied depending on the crystal exposure time under UV light or on the number of light pulses. IR spectra of molecular hydrogen-bonded complexes and hydroxyl ions in different bleaching stages are presented. The transformation of strong hydrogen-bonded complexes under illumination into complexes with weak hydrogen bond (and vice versa) is studied. It is shown how molecular hydrogen-bonded complexes involving hydroxyl affect the transformation of color centers during the crystal bleaching.
引用
收藏
页码:1808 / 1814
页数:7
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