人工晶体学报2001，Vol.30Issue(1)：79-84,6.
CaF2∶Dy的热释光特性研究
Study on the Thermoluminescence Properties of CaF2∶Dy
陈唯 1杨百瑞 1贾栓稳2
作者信息
- 1. 北京师范大学物理系,
- 2. 河南安阳师专物理系,
- 折叠
摘要
Abstract
The 25-290K and 300-670K thermoluminescence(TL) spectra in the X-ray irradiated CaF2∶Dy were measured and analyzed.Thermal peaks were detected at 76、84、137、170、349、363、388、414、437 and 465K with the narrow emission bands centered at 480、575、675 and 775nm.Additional broad emission bands were observed on the shorter wavelength side as well as those narrow bands in the X-ray induced radioluminescence(RL)spectra.With the reference of the mechanical parameters obtiained from the analysis of the glow curves,it is suggested that the narrow band emissions were produced by the nearby hole-Dy2+ recombination though the potential barrier and the broad bands were from the exciton or self-trapped exciton emissions.The thermal emissions below 380K are not thermally stable at room temperature and the visible light can bleach all those TL peaks.关键词
热释光/辐射致发光/CaF2∶Dy/发光机理/稳定性分类
数理科学引用本文复制引用
陈唯,杨百瑞,贾栓稳..CaF2∶Dy的热释光特性研究[J].人工晶体学报,2001,30(1):79-84,6.
