强激光与粒子束, 2004, 16 (4): 461, 网络出版: 2006-05-15
中子产额活化测量法中γ-γ符合探测效率的模拟计算
Simulation of the γ-γ coincidence detection efficiency in activation measurment for neutron yield
激光核聚变 中子产额 蒙特卡罗方法 符合探测效率 Laser fusion Neutron yield Munte Carlo method Coincidence detection efficiency
摘要
为了估计聚变中子产额Cu活化测量法中加速器中子源刻度与实际测量中几何条件不一致对测量结果的影响,通过对MCNP进行二次开发,用蒙特卡罗方法计算了这两种情况下有角关联的γ-γ符合探测效率,通过与刻度实验结果比较,验证了计算结果的正确性,得出了几何条件的差别引起探测效率的增加小于3%的结论.
Abstract
In order to evaluate the influence resulted from the difference between the situation in which fusion neutrons are measured by Cu activation method and the situation in which the calibration factor is obtained by accelerator neutron Cu activation method,the author,by further developing the MCNP code,calculated the angular correlated γ-γ coincidence detection efficiency.The correction of calculation is demonstrated by comparing the calculation with the experimental result and the difference of less than 3% between the two situations is concluded.
白立新, 张一云, 吴丽萍, 徐家云, 赵庆昌, 孙大成, 冯杰, 王大海, 杨存榜, 陈玉婷, 温树槐, 郑志坚. 中子产额活化测量法中γ-γ符合探测效率的模拟计算[J]. 强激光与粒子束, 2004, 16(4): 461. BAI Li-xin, ZHANG Yi-yun, WU Li-ping, XU Jia-yun, ZHAO Qing-chang, SUN Da-cheng, FENG Jie, WANG Da-hai, YANG Cun-bang, CHEN Yu-ting, WEN Shu-huai, ZHENG Zhi-jian. Simulation of the γ-γ coincidence detection efficiency in activation measurment for neutron yield[J]. High Power Laser and Particle Beams, 2004, 16(4): 461.
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