锗酸铋晶体中子辐照诱导色心的研究  

Study on the Color Center Induced by Fast Neutron Irradiation for BGO

作　　者：李欣年[1] 方晓明[1] 

机构地区：[1]上海大学射线应用研究所,上海201800

出　　处：《上海大学学报（自然科学版）》2002年第6期535-538,共4页Journal of Shanghai University:Natural Science Edition

摘　　要：对锗酸铋晶体进行了两种不同剂量的14.6MeV快中子辐照.利用常规的核探测技术,通过测量其辐照前后　Cs的γ能谱来观察峰总比的变化,研究了辐照诱导色心对于荧光输出和中子剂量对于辐照诱导色本底能谱和137心密度的影响.14.6 MeV fast neutron irradiation had been made on BGO crystal with two different irradiation dose. The BGO crystal before and after irradiation was used as scintillant in a probe. The changes in peaktogross ratio were observed through its background spectra and γ spectra of 137Cs using ordinary nuclear radiation detection technique. It has been found that the color center induced by irradiation results in a decrease of fluorescence outputs while the density of color center is affected by the neutron radiation dose.

关 键 词：锗酸铋晶体 快中子 辐照诱导 色心 

分 类 号：O773[理学—晶体学]