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。
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.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第4期461-464,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
关键词
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
