稍超瞬发临界系统缓发中子发射率研究

摘要

使用蒙特卡罗直接模拟程序计算了弱源点火条件下超瞬发临界5 (c)的GodivaⅠ快中子脉冲堆缓发中子发射率规律和脉冲引发时刻概率分布.计算结果表明,脉冲引发时刻概率分布的计算结果与实验结果符合较好,所获得的缓发中子发射率规律可合理解释引发时刻概率分布的实验结果.%Emission rates of delayed neutrons and burst initiation time for Godiva I burst assembly in the presence of weak neutron source, whose reactivity was 5 (c) above prompt criticality, were calculated using analog Monte-Carlo method.The result of initiation time is consistent with experiment.Emission rate of delayed neutron attained from calculation can well explain the probability distribution of initiation time.