铈掺杂高密度硼硅酸盐玻璃光谱性质研究  

Spectroscopic Properties of Cerium Doped High Density Boron Silicate Glasses

作　　者：韩朝霞[1] 汤正新[1] 陈庆东[1] 巩晓阳[1] 赵海丽[1] 

机构地区：[1]河南科技大学物理与工程学院,河南洛阳471003

出　　处：《中国稀土学报》2010年第3期275-279,共5页Journal of the Chinese Society of Rare Earths

基　　金：河南科技大学人才科学研究基金(05-033)资助

摘　　要：实验制备了一种密度为5.2 g.cm-3的高密度铈离子掺杂硼硅酸盐闪烁玻璃,该玻璃具有较高的析晶稳定性。测试了该闪烁玻璃的激发和发射光谱,其峰值波长分别对应于325和385 nm,斯托克斯位移为60 nm。当氧化铈掺杂浓度小于1%(质量分数)时,325 nm激发下的发射光谱强度随浓度的增加而提高,而掺杂浓度的进一步提高,由于三价态铈离子的自吸收等吸收猝灭效应导致380 nm的发射强度出现严重降低。掺杂1%(质量分数)的玻璃样品经245Gy的伽马射线辐照后,其可见波段的透过率并未出现明显降低,说明该玻璃具有较好的耐辐照性能。A new high density of 5.2 g·cm-3 cerium doped boron silicate scintillation glass was prepared,which had high crystallization stability.The emission spectra of glass samples stimulated by 325 nm UV for different doping concentrations were carried on,and the excitation spectra monitored at 385 nm was also measured.According to the peak wavelength corresponding to 325 and 385 nm,the Stokes shift was about 60 nm for this scintillation glass.When the doping concentration of cerium oxide was less than 1%,the stimulated emission spectra intensity enhanced with increasing doping concentration.If the doping concentration further increased,due to the self-absorption of Ce3＋ and other quenching effects,it could lead to a serious reduction of the 380 nm emission intensity.The transmittance of 1%-doped glass samples before and after 245Gy of gamma-ray radiation were measured,as it was not becoming significantly lower,but indicating that the glass had good resistance to irradiation performance.

关 键 词：高密度闪烁玻璃 硼硅酸盐玻璃 光谱性质 稀土 

分 类 号：TQ171[化学工程—玻璃工业]