Transformations of absorption and emission centers in PbWO4

被引：4
作者：
Bohacek, Pavel [1 ]
Solovieva, Natalja [2 ]
Nikl, Martin [2 ]
机构：
[1] Acad Sci Czech Republic, Inst Phys, CZ-18221 Prague, Czech Republic
[2] Acad Sci Czech Republic, Inst Phys, CZ-16253 Prague 6, Czech Republic
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2008年 / 55卷 / 03期
关键词：
absorption centers; emission centers; lead tungstate non-stoichiometric crystals; oxygen interstitials;
D O I：
10.1109/TNS.2007.914370
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Non-stoichiometric PWO crystals were studied at annealing experiments in various atmospheres. It was found that a substantial part of absorption centers in the PWO platelets was brought into absorption activity due to mechanical processing of their surfaces. The green emission of the type G(II) is conditioned by presence of mechanical tension at the emission centers. A new process found at annealing is the transformation of the 330/355 centers into the 340/430 centers caused by separation of lead vacancies from the former ones.
引用
收藏
页码：1289 / 1294
页数：6
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