无机材料学报

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高温闪烁晶体Ce:YAP中的小角度晶界

李红军; 赵广军; 曾雄辉; 钱振英; 郭聚平; 周圣明; 徐军   

  1. 中国科学院上海光学精密机械研究所 上海 201800
  • 收稿日期:2003-08-25 修回日期:2003-10-10 出版日期:2004-09-20 网络出版日期:2004-09-20

Low-angle Boundary in High-temperature Scintillating Crystal Ce:YAP

LI Hong-Jun; ZHAO Guang-Jun; ZENG Xiong-Hui; QIAN Zhen-Ying; GUO Ju-Ping; ZHOU Sheng-Ming; XU Jun   

  1. Shanghai Institute of Optics and Fine Mechanics; Chinese Academy of Sciences; Shanhgai 201800; China
  • Received:2003-08-25 Revised:2003-10-10 Published:2004-09-20 Online:2004-09-20

摘要: 通过腐蚀形貌和XRD摇摆曲线,观察到了垂直和平行于Ce:YAP[010]方向的两组晶面内存在的小角度晶界(镶嵌结构间界),根据SEM形貌估算出(010)面内小角晶界的夹角为51”;四晶XRD摇摆曲线的结果表明,平行于[010]向的晶面内小角晶界的夹角为58”;摇摆曲线的半峰宽为54”,根据Darwin理论算出理想晶体的半峰宽为17”,并由此分析了晶体的完整性.

关键词: Ce:YAP晶体, 闪烁晶体, 小角晶界

Abstract: Two kinds of low-angle boundary (mosaic structure) in Ce:YAP were observed by etching figures and rocking-curve. From SEM figure, the boundary angle on (010) plane estimated is 51". The rocking-curve by four-crystal high-resolution XRD shows that the boundary angle on the plane paralleled with [010] is 58". The FWHM (Full Width-Half Maximum) of rocking-curve is 54", and the one of ideal YAP crystal calculated out is 17" according to Darwin s theory. The integrality of Ce:YAP sample was analyzed on the basis of these result.

Key words: Ce:YAP crystal, scintillating crystal, low-angle boundary

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