大尺寸PbWO4：Y晶体光谱性能的均匀性研究  

Spectroscopic Properties Uniformity of Large-Size PbWO_4∶Y Crystal

作　　者：耿政松[1] 陆少君 谢建军[3] 廖晶莹[3] 

机构地区：[1]同济大学化学系,上海200092 [2]同济建设工程质量检测站,上海200092 [3]中国科学院上海硅酸盐研究所,上海200050

出　　处：《同济大学学报（自然科学版）》2008年第1期135-138,共4页Journal of Tongji University:Natural Science

摘　　要：报道了用改进的布里奇曼（Bridgmam）法生长的大尺寸PbWO4：Y晶体光谱性能均匀性的研究．通过对依次切自大尺寸PbWO4：Y毛坯晶体的籽晶端、中间部位和顶端三块晶体（24m×24m×24mm）的透射光谱、X-ray激发发射光谱、发光衰减寿命、光产额和辐照损伤等方面的光谱性能测试，表明了Y掺杂能显著改善PbWO4晶体的光谱性能，使晶体在短波330-420nm范围的透过率明显提高，抗辐照能力增强．This paper presents the characterization and investigation of the optical properties uniformity on large-size PbWO4 ： Y crystals grown by modified Bridgman method. Based on the comparison measurement of the optical transmission spectra, X-ray excited luminescence, decay time, light yield and irradiation damage for 24 mm × 24 mm ×24 mm crystal samples cut from seed end, middle part and top end of large-size PbWO4：Y crystal ingot, the results show that doping Y can significantly improve the optical transmission, radiation hardness and other spectroscopic properties of PbWO4 crystal. The large-size PbWO4 ：Y crystal has excellent uniformity according to the comparison measurement results of spectroscopic properties of PbWO4 crystal samples.

关 键 词：PBWO4 Y晶体 改进的Bridgman法 光谱性能 

分 类 号：O734[理学—晶体学]