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掺杂钨酸铅闪烁晶体的闪烁光学性质研究

STUDY ON THE SCINTILLATING PROPERTIES OF IONS DOPED LEAD TUNGSTATE SCINTILLATION CRYSTALS

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摘要

利用多坩埚温度梯度法生长了PbWO4 和BaF 2 :PbWO 4 晶体, 研究了PbWO 4 、退火PbWO 4 和BaF 2 :PbWO 4 晶体 的透过光谱和X射线激发光谱, 结果发现这些光谱性质与晶体的组成和生长工艺密切相关, 其中退火的影响较复 杂.高温退火的PbWO 4 晶体的透过光谱在360nm以上波段有较好的透过率, 但是在320~360nm波段透过率反而略 有降低;380nm以上波段的X射线激发光谱光谱强度较高, 320~380nm波段光谱强度却略有降低.掺杂的离子改 善了晶体的透过率和X射线激发发光光谱强度.利用晶体的生长工艺和组成与缺陷以及晶体光学性质之间的关系 解释了这些现象产生的原因.BaF 2 :PbWO 4 掺杂晶体的X射线激发光谱的波形和发光峰强度均发生了很大程度的 改变, 与F 离子掺杂引发晶体[WO 4 ] 2四面体基团畸变而产生的新的发光中心有关.

Abstract

PbWO 4 and BaF 2 :PbWO 4 were grown by multi-crucible temperature gradient system. The transmittance spectra and x-ray excited luminescence spectra of as-grown PbWO 4 , annealed PbWO 4 and annealed BaF 2 :PbWO 4 were studied. The results reveal that these properties are related to the composition and growth arts of the crystals. The facts are complicated for the crystals annealing. In the wavelength range above 360nm, the transmittance for the annealed crystal is better than that of the as-grown crystal, while it is a little weaker than that of the as-grown crystal in the wavelength range of 320 ~360nm. For the x-ray excited luminescence spectra, the spectrum intensity of the annealed crystal is higher than that of as-grown crystal in the wavelength range above 380nm, while it is a little weaker than that of as-grown crystal in the wavelength range of 320~380nm. The doping ions improve the transmittance and the x-ray excited luminescence spectrum intensity. These phenomena are explained based on the relations of the defect, crystal growth arts and the optical properties of these crystals. For the BaF 2 :PbWO 4 crystal, it's peak shape and intensity of x-ray excited luminescence spectrum are evidently changed than PbWO4 crystal. The phenomenon may relate to the fact that [WO 4 ] 2tetrahedron of the crystal is degenerated when it is doped with F ions, and the degeneration will induce a new luminescent center.

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中图分类号:TN213

基金项目:浙江国际合作重大攻关项目(2006C14029)和浙江自然科学基金(Y105459)资助项目

收稿日期:2008-07-11

修改稿日期:2009-02-03

网络出版日期:0001-01-01

作者单位    点击查看

万尤宝:嘉兴学院 先进材料研究所, 浙江 嘉兴 314001云南师范大学 可再生能源材料先进技术与制备教育部重点实验室, 云南 昆明 650092
吴宇容:嘉兴学院 先进材料研究所, 浙江 嘉兴 314001
张建新:嘉兴学院 先进材料研究所, 浙江 嘉兴 314001
杨培志:云南师范大学 可再生能源材料先进技术与制备教育部重点实验室, 云南 昆明 650092
肖林荣:嘉兴学院 先进材料研究所, 浙江 嘉兴 314001
杨 辉:浙江大学 材料与化工学院无机材料研究所, 浙江 杭州 300200

备注:万尤宝(1970-), 男, 湖北红安人, 副教授, 研究方向为光电子材料与器件

【1】Musienko Y. The CMS electromagnetic calorimeter [J]. Instr.Meth A., 2002, 494: 308—312.

【2】SHAO Jun, MA Li-Li, LU Xiang , et al. Recent progress and potential impact of modulation spectroscopy for narrowgap HgCdTe[J]. J.Infrared Millim.Waves (邵军, 马丽丽, 吕翔, 等.窄禁带碲镉汞调制光谱的近期研究进展和前 景. 红外与毫米波学报 ), 2008, 27 (2): 1—6.

【3】XIA Xiang-Tuan, ZHU Jin-Xing, LIU Xue-Ming, et al. Influence of earth radiation on sun sensor[J]. J. Infrared Millim. Waves (夏项团, 朱进兴, 刘学明, 等.地球反幅射 对太阳探头影响的研究. 红外与毫米波学报 ), 2008, 27 (2):27-30.

【4】Lecoq P. Ten years of lead tungstate development[J]. Instr.Meth A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005, 537 (1~2):15—21.

【5】Shanxiaguisi. Bilateral Symposium Digest for Phonic Science and Industry[C]. Hangzhou, China, 2000, 20—25.

【6】Yang Pei-Zhi. Growth of large-size crystal of PbWO4 by vertical Bridgman method with multi-crucibles[J]. J. Cryst. Growth, 2002, 236 (4):589—595.

【7】WAN You-Bao. The multi-crucible system for crystal growth [P]. CN 200610148319.4(万尤宝.多坩埚温梯法晶体 生长系统), CN 200610148319.4

【8】Moreau J M. Structural characterization of PbWO4 and related new phase Pb7W8O32-x [J]. J. All. and Comp., 1996, 238: 46—48.

【9】Williams R T, Zhang Y C, Abraham Y, et al . Scintillation characterisitics of PbWO 4 single crystal[J]. Proceedings of ICISA 15th , 2000, 118.

【10】YE Chong-Zhi, LIAO Jing-Ying, YANG Pei-Zhi, et al . Growth and scintillation properties of F doped PbWO4 crystals[J]. Nucl. Instr. Meth. A., 2006, 566 :757.

引用该论文

WAN You-Bao,WU Yu-Rong,ZHANG Jian-Xin,YANG Pei-Zhi,XIAO Lin-Rong,YANG Hui. STUDY ON THE SCINTILLATING PROPERTIES OF IONS DOPED LEAD TUNGSTATE SCINTILLATION CRYSTALS[J]. Journal of Infrared and Millimeter Waves, 2009, 28(4): 263-266

万尤宝,吴宇容,张建新,杨培志,肖林荣,杨 辉. 掺杂钨酸铅闪烁晶体的闪烁光学性质研究[J]. 红外与毫米波学报, 2009, 28(4): 263-266

被引情况

【1】万尤宝,吴宇容,张建新,杨培志,肖林荣,杨辉. 掺杂浓度对BaF2:PbWO4闪烁晶体发光性能的影响. 红外与毫米波学报, 2011, 30(3): 232-235

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