Colour centres induced in LiF by low-energy electrons

被引:21
作者
Baldacchini, G
d'Auria, G
Montereali, RM
Scacco, A
机构
[1] ENEA, Dipartimento Innovaz, Settore Fis Applicata, I-00044 Frascati, Italy
[2] Univ La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[3] Univ La Sapienza, Unita INFM, I-00185 Rome, Italy
关键词
D O I
10.1088/0953-8984/10/4/014
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
A detailed study has been carried out on the optical properties of intrinsic colour centres, created in LiF crystals under irradiation with low-penetration 3 keV electrons. The kinetics of the production of F and M centres, determined from optical absorption measurements, exhibits a typical three-stage structure and an evident saturation at high doses. The quantitative evaluation of the kinetic parameters is in excellent agreement with the predictions of the most comprehensive theoretical model. A comparison of the effects of irradiation at different temperatures, determined from absorption and photoluminescence spectra, allows one to deduce the conditions for preferential formation of F-2 or F-3(+) defects in LiF crystals.
引用
收藏
页码:857 / 867
页数:11
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