ST-401图像转换屏γ射线-中子相对灵敏度测量

Relative sensitivity measurement for ST-401 image converter to gamma-neutron

介绍了测量图像转换屏对60Coγ射线与DT中子相对灵敏度的实验方法。在中子灵敏度测量中,用脉冲中子源测量了γ射线贡献份额;在γ射线灵敏度标定中,使用与中子实验同一实验设置,钴源与中子源交替标定。给出了不同厚度ST-401闪烁体对1.25MeVγ射线与14.85MeV中子的相对灵敏度及测量不确定度。

Experiments on relative sensitivity measurement for image converter to ^60Co and DT neutron have been developed. In the neutron-sensitivity measurement, the γ-ray contribution was measured in the pulse neutron source. In the experiments on T-ray-sensitivity measurement, the identical experiment set- up was employed and ^60Co and neutron source were alternately used. The relative sensitivities of ST-401 plastic scintillator with several thicknesses are provided with their measurement uncertainty.