红外与毫米波学报2011，Vol.30Issue(3)：232-236,5.
掺杂浓度对BaF2:PbWO4闪烁晶体发光性能的影响
The influence of ion doping concentration on the luminescence properties of BaF2: PbWO4 crystals
摘要
Abstract
A batch of BaF2 :PbWO4 crystals are grown up by a multi-crucible temperature gradient system.The transmittance and x-ray exciting luminescence (XEL) spectra of these crystals were studied.The results reveal that these scintillation properties are strikingly effected by the doped BaF2 content in the crystals.Proper BaF2 content in the crystal could improve the transmittance and the XEL peak intensity and make the XEL peaks shift to longer wavelength.For the crystal grown up from the melt with BaF2 1000mol-ppm, this raising extent becomes evident for their transmittance and the XEL peak intensity.For the crystal grown up from the melt with BaF2 2500 ～ 3000mol-ppm, their transmittance and XEL peak intensity raise greatly.For the crystal grown up from BaF2 3500mol-ppm, there is no evidence change for the transmittance, but its blue XEL peak intensity becomes weak and the peak width enlarged.For the crystal grown up from the melt with BaF2 5000mol-ppm, the blue peak intensity becomes low while the green peak intensity becomes strong.The enhancingeffect of V3+Pb and Vo- and [WO3F]- tetrahedron and the weakening-effect of Oi ,Ba1 and [WO2F2]tetrahedron are related to the phenomena.关键词
闪烁晶体/温度梯度法/透过光谱/畸变/x-射线激发发光光谱Key words
scintillation crystal/ temperature grads technique/ transmittance/ degeneration/ x-ray excited luminescence spectrum分类
信息技术与安全科学引用本文复制引用
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[J].红外与毫米波学报,2011,30(3):232-236,5.基金项目
浙江国际合作重大攻关项目(2006C14029) （2006C14029）
浙江自然基金资助项目(Y105459) （Y105459）
