235U裂变碎片在PIN探测器中沉积能量的实验研究
DOI: 10.11889/j.0253-3219.2014.hjs.37.110403 , PP. 110403-110403
Keywords: 裂变碎片 ,裂变靶室 ,PIN探测器 ,沉积能量
Abstract:
利用中子与235U发生裂变反应的截面在裂变中子能区基本不变这一特点,可设计研制裂变靶室探测系统,该系统中子能量响应较平坦,在脉冲中子总数测量中有广阔的应用前景。利用K-400加速器稳态DT中子源,实验标定了235U裂变碎片在PIN探测器中的平均沉积能量,并与理论计算结果进行了比较。裂变靶室系统探测效率可通过数值计算准确给出,与平均沉积能量实验测量值相结合,可得到准确的中子灵敏度数据,进而获得裂变靶室探测系统中子能量响应曲线。
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