【作者】 赵修良； 李义国； 夏普； 史永谦； 骆亿生； 俞元法；

【Author】 ZHAO Xiuliang~1 LI Yiguo~2 XIA Pu~2 SHI Yongqian~2 LUO Yisheng~3 YU Yuanfa~2 1 (Nuclear Technical School, Nan Hua University, Hengyang, 421001,China) 2 (China Institute of Atomic Energy, RO.Box 275-75, Beijing, 102413,China) 3 (Beijing Institute of Radiation Medicine, Beijing, 100850)

【机构】 南华大学核科学技术学院； 中国原子能科学研究反应堆工程设计研究所； 北京放射医学研究所；

【摘要】 本文计算了由聚乙烯、铅和CR-39探测器组成的叠层探测器测量各向同性中子能谱的能量分辨率。计算结果表明,能量分辨率与聚乙烯和铅的厚度有关,聚乙烯厚度不变,能量分辨率随铅厚度的增加而变小;铅厚度不变,能量分辨率随聚乙烯厚度增加而变大。更多还原

【Abstract】 The neutron energy resolution forcombined detectorconsisted of polyethylene+Pb+CR-39 detector used in isotropic neutron field was studied. The results show that the energy resolution of the detector combination is related to the thickness of Pb and the polyethylene. When the thickness of polyethylene is fixed, energy resolution turns to lower with the increase of Pb, while for the fixed thickness of Pb, energy resolution turns to smaller with the increase of the thickness of the polyethylene.更多还原