色心激光器材料LiF和LiF:(OH)的正电子湮没谱研究  

A study of color center laser crystals LiF and LiF:(OH)-by positron annihilation

作　　者：林荫浓 张志娴 王文静 

机构地区：[1]天律师范大学,天津300074

出　　处：《核技术》1993年第7期404-408,共5页Nuclear Techniques

基　　金：天津市青年科学基金

摘　　要：对LiF(F_2^+)和LiF:(OH)^-(F_2^+)色心晶体经液氮温度电子束辐照后,在室温下放置不同时刻的正电子湮没谱进行了研究,发现寿命谱中第一、第二成分的相对强度I_1、I_2及Doppler展宽谱中S参数随着F_2^+心的衰减呈有规律的变化,且与辐照剂量有一定关系。This paper described a detailed study on positron annihilation spectra of LiF(F2+) and LiF:(OH)-(F2+) color center crystals kept at RT for different time after electron-beam irradiation at L.N.T.. It is found that the relative intensity of 1st and 2nd components (I1 and I2) of the lifetime spectra and S parameter of the Doppler broadened spectra varied regularly with the decrease of F2+ center concentration and the variation had a certain relation with the irradiation dose.

关 键 词：色心 晶体 正电子湮没谱 激光器 

分 类 号：TN244[电子电信—物理电子学]