具有统计增强效应的(CF_2)_n-PIN夹层探测阵列  

A (CF_2)_n-PIN Sandwich Detecting Array with Statistics Enhancement in Low Pulsed γ Flux Measurement

作　　者：欧阳晓平[1] 李真富[2] 霍裕昆[3] 王义[1] 张忠兵[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]西北核技术研究所,西安710024 [3]复旦大学现代物理研究所,上海200433

出　　处：《高能物理与核物理》2006年第7期704-708,共5页High Energy Physics and Nuclear Physics

摘　　要：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 （CF2）n-PIN sandwiched detecting array with statistics enhancement in low pulsed T flux measurements has been constructed. The array uses 2mm thick （CF2）n overlaid with SiopIN detector of φ60mm×1000μm, then coupled to PA101 amplifier with gain 100. The array exhibits four distinct properties： （1） very high detecting efficiency： The T detecting sensitivity of the array can reach 10^-11C·cm^2, which is 4 orders of magnitude higher than that of a signal PIN detector of φ20mm×250μm; （2） remarkable statistics enhancement： The statistics enhancement of the array has been studied with MoC simulation, which displays highly enhanced statistics in very low pulsed T flux measurement; （3） huge dynamic range： A single array can cover seven orders of magnitude＇s measurement range of T flux; and （4） fiat response in given T energy range. The array has found its applications in experimental measurements.

关 键 词：统计增强 (CF2)n-PIN夹层 半导体探测器 

分 类 号：TL816.1[核科学技术—核技术及应用]