期刊论文

中文

太赫兹科学与电子信息学报

2095-4980

2019

17

5

910-913

10.11805/tkyda201905.0910

(11175083):国家自然科学基金资助项目 (2018JJ2314):湖南省自然科学基金资助项目

本校为第一机构

采用高低温试验方法探究了温度变化对 NaI(Tl)闪烁探测器性能及能谱测量的影响，观察能谱并以常温 25 °C为基准，计算 137Cs的0.662 MeV、60Co源1.173 MeV,1.332 MeV特征峰位道址、γ射线全能峰计数率、能量分辨率在 25 °C下相对变化值。结果为： 137Cs的0.662 MeV、60Co源1.173 MeV, 1.332 MeV特征峰位道址在 0 °C~20 °C范围内基本保持一致，在 20 °C~45 °C范围内随温度升高逐渐降低； 0.662 MeV和1.173 MeV全能峰计数率随温度变化分别在±5.19%和±4.48%范围内保持一致； 3个对应能量分辨率分别在 ±4.3%范围内随温度变化保持一致。可看出利用 γ源作为稳峰源是可行的。 In this paper,...

In this paper, the effect of temperature change on the performance and energy spectrum measurement of NaI(Tl) scintillation detector was investigated by high and low temperature test method. The energy spectrum was observed on the basis of 25 °C as a benchmark. The calculated values at 25 °C include the characteristic peak path address of 137Cs in 0.662 MeV, 60Co in 1.173 MeV and 1.332 MeV, and the total peak counting rate of Gamma rays, energy resolution. It comes to a conclusion that the characteristic peak path addresses of 137Cs in 0.662 ...