论文部分内容阅读
采用灵敏区尺寸为(?)60mm,厚度1000μm的大面积电流型厚PIN半导体探测器+聚四氟乙烯片 +PA101低噪声放大器,构建了灵敏度为10-11C·cm2,具有显著统计增强效应的夹层高灵敏PIN探测阵列．采用Monte-Carlo数值模拟方法,研究了该探测阵列的统计增强效应和对γ射线探测灵敏度．该阵列在极低强度脉冲γ射线探测中具有明显的统计增强效应,且能量响应平坦,单个阵列探测范围可达7个量级,其γ灵敏度比直径为(?)20mm,厚度为250μm的单个PIN探测器高4个量级并可进行直接标定,是低强度裂变n／γ混合场脉冲γ射线波形面积测量较理想的探测器,已在有关科学实验中获得成功应用．
A large-area current PIN-type semiconductor detector + polytetrafluoroethylene sheet and PA101 low-noise amplifier with a sensitive area of (?) 60mm and a thickness of 1000μm were fabricated. The sensitivity of the detector was 10-11C · cm2 and a statistically significant enhancement effect Sandwich highly sensitive PIN detection array. Monte-Carlo numerical simulation method is used to study the statistical enhancement effect of this detection array and its sensitivity to γ-ray detection. The array has obvious statistical enhancement effect in extremely low intensity pulsed γ-ray detection, and the energy response is flat. The detection range of a single array can reach seven orders of magnitude, and its γ sensitivity is smaller than that of a single The PIN detector is 4 orders of magnitude high and can be directly calibrated. It is an ideal detector for measuring the pulse gamma ray area of low intensity fission n / γ hybrid field and has been successfully applied in related scientific experiments.