人工晶体学报2012，Vol.41Issue(4)：844-848,852,6.
坩埚下降法生长钨酸镉晶体的闪烁性能
Scintillation Property of Cadium Tungstate Single Crystal Grown by Vertical Bridgman Technique
摘要
Abstract
Using the solid-state synthesized CdWO4 polycrystalline as the feed material, large-size CdWO4 single crystals were grown by vertical Bridgman process. The scintillation properties of CWO single crystals were characterized systematically by UV-visible transmission spectra, photoluminescence spectra, photoluminescence decay curve, X-ray excited luminescence spectra, the relative light yield and 7-ray radiation hardness. The spectrum measurements show a high optical transmittance in the visible wavelength range and a strong emission with central wavelength at 475 nm under X-ray excitation. The photoluminescence decay time with central wavelength of 475 nm was measured to be 842 ns under the ultraviolet radiation. The relative light yield under -y-ray excitation was measured to be 51. 5% -57.4% as compared to the standard sample Csl: Tl. The single crystals were confirmed to possess a high irradiation hardness by the measured -y-ray radiation hardness of 107 rad.关键词
钨酸镉/坩埚下降法/衰减时间/辐照硬度Key words
CdWO4/ vertical Bridgman technique/ decay time/ radiation hardness分类
数理科学引用本文复制引用
沈琦,陈红兵,王金浩,蒋成勇,潘建国,徐军..坩埚下降法生长钨酸镉晶体的闪烁性能[J].人工晶体学报,2012,41(4):844-848,852,6.基金项目
973计划前期研究专项(2011CB612306) （2011CB612306）
国家自然科学基金(21171102) （21171102）
宁波市自然科学基金(2010A610165) （2010A610165）
宁波大学科研基金(xkl09074,xkl067) （xkl09074,xkl067）
宁波大学王宽诚幸福基金 （）
