The role of Sm ions in optical storage of SrS: Eu,Sm

作     者：何志毅 王永生 孙力 侯延冰 徐叙■ 

作者机构：Institute of Optoelectronic Technology Northern Jiaotong University Beijing China 

出 版 物：《Science China Mathematics》 (中国科学：数学（英文版）)

年 卷 期：2001年第44卷第9期

页      面：1189-1196页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China (Grant No, 19874001) Paper Foundation of Northern Jiaotong University 

主　　题：electron capturing electron trap optical storage samarium. 

摘      要：The optical absorption spectra of infrared stimulable phosphor SrS:Eu, Sm in the saturat-ed and bleached states of optical storage were investigated. The valence and number of Sm3+ ions were examined via the Sm3+ 4f-4f absorption in near-infrared region. It was found that the broad band absorption corresponding to the transition for electrons stimulated from the traps to the conduction band is decreased at the wavelengths of Sm3+ absorption lines. The dependence of optical storage on Sm concentration was measured. A new trapping mechanism in SrS: Eu, Sm was presented based on our experimental results and the role of Sm ions was identified.