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报道了用改进的Bridgmam法生长的大尺寸PbWO4:(Sb,Y)晶体的光谱特性的表征研究.通过对依次切自大尺寸PbWO4:(Sb,Y)毛坯晶体的籽晶端、中间部位和顶端三块晶体(-23mm×23mm×20mm)的透射光谱、X射线激发发射光谱、紫外激发与发射光谱、发光衰减寿命、光产额和辐照损伤等方面的光谱性能测试,结果表明,Sb、Y双掺杂能显著改善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,光产额增加,抗辐照能力增强.但从籽晶端到顶端的性能存在一定的差异,说明大尺寸的PbWO4:(Sb,Y)晶体的均匀性还有待提高.
The characterization of the spectral properties of large-size PbWO4: (Sb, Y) crystals grown by the improved Bridgman method is reported.The effects of the growth of PbWO4: (Sb, Y) The top three crystals (-23mm × 23mm × 20mm) of the transmission spectrum, X-ray excitation emission spectrum, UV excitation and emission spectra, emission life decay, light yield and radiation damage and other aspects of the spectral performance test results show that Sb , Y double doping can significantly improve the spectral properties of PbWO4 crystals, the crystal in the shortwave 330-420nm range of the transmittance was significantly increased, the light yield increased, enhanced anti-radiation ability, but from the seed end to the top of the performance Certain differences indicate that the uniformity of large-size PbWO4: (Sb, Y) crystals needs to be improved.