Determination of color centers in CaF2 crystals by multiple gamma-ray irradiations

被引：6
|
作者：
Chen Wei [1 ]
Song PingXin [1 ]
Dong YongJun [2 ]
Zhang YingJiu [1 ]
Hua Wei [2 ]
机构：
[1] Zhengzhou Univ, Coll Phys Sci & Engn, Zhengzhou 450000, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2013年 / 58卷 / 11期
关键词：
CaF2; TGT; gamma-ray; irradiation; color centers; crystals; CALCIUM-FLUORIDE; GROWTH;
D O I：
10.1007/s11434-012-5615-z
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Color centers of CaF2 crystals subjected to three high-dose gamma-ray irradiation treatments were studied. Three absorption bands at 349, 409 and 478 nm are ascribed to the F interstitials through the variation in difference additional absorption values. The transformation of interstitial F atoms to F ions (F-i(-)) is demonstrated using data with increasing radiation dose. The decrease in the 600 nm absorption band and the occurrence of the 580 nm band correspond to F-2(+) center conversion to F center. The complex (F--F-i(0)) might be associated with the 962 and 1196 nm bands.
引用
收藏
页码：1321 / 1324
页数：4
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