摘要
采用液体成膜法制备了Al2O3:C光致荧光剂量计(OSLD),开展了剂量学性能的初步研究。退火后本底为0.03 mGy,均匀性优于2%,在0.02 mGy~10 Gy测量范围内具有良好线性响应,线性相关系数R 2=0.9996,对β、γ射线响应系数差异约10%,对中子响应系数约为β、γ射线的4%~7%,剂量计多次测量响应信号无明显衰减,照后两个月响应变化为5%,可用于一定周期内剂量存档、复测。上述结果表明,液体成膜方法制备的OSLD具有良好的剂量学性能,证明该方法可行。
Al2O3:C optically stimulated luminescence dosimeter(OSLD)was prepared by liquid film forming method,and its dosimetric properties were studied.The results showed that the background was 0.03 mGy after annealing,the uniformity was better than 2%,and it had linear response with correlation coefficient R 2=0.9996 in the measurement range of 0.02 mGy-10 Gy,the difference between the response coefficients ofβandγray was about 10%,the response coefficient of neutron was about 4%-7%ofβandγrays,the response signal of dosimeter had no obvious attenuation after multiple measurements,and the response changed by 5%in two months after exposure,which can be used for dose archiving and retesting in a certain period.The results show that the OSLD prepared by the liquid film forming method has good dosimetric properties,which prove the feasibility of the method.
作者
夏文
罗瑞
叶宏生
陈克胜
林敏
徐利军
陈义珍
张卫东
XIA Wen;LUO rui;YE Hongsheng;CHEN Kesheng;LIN Min;XU Lijun;CHEN Yizhen;ZHANG Weidong(China Institute of Atomic Energy,Beijing 102413,China)
出处
《同位素》
CAS
2021年第1期24-29,I0002,共7页
Journal of Isotopes
关键词
Al2O3:C
光致荧光
光致荧光剂量计(OSLD)
Al2O3:C
optically stimulated luminescence
optically stimulated luminescence dosimeter(OSLD)