强激光与粒子束, 2016, 28 (5): 056001, 网络出版: 2016-04-12  

散射中子对超瞬发临界系统动态行为的影响

Kinetic effect of scattering neutrons on super-prompt critical system
作者单位
中国工程物理研究院 核物理与化学研究所, 四川 绵阳 621900
摘要
在点反应堆理论的基础上,建立了研究散射中子影响超瞬发临界系统动态行为的模拟计算方法,利用CFBR-Ⅱ堆的脉冲实验验证了该方法的正确性。通过分析计算表明,在超瞬发临界状态,散射中子的影响包括增加反应性、使脉冲波形后沿展宽和增加脉冲裂变产额。建立的模拟计算方法为预测脉冲堆外各种物体产生的散射中子的动力学效应提供了途径,对提高脉冲堆的核安全有应用价值。
Abstract
A numerical simulation method is built based on the point reactor kinetic equations to study the impact of scattering neutrons on a super-prompt critical system, and its correctness is validated by pulse experiment on CFBR-Ⅱ reactor. The analysis and calculation show that kinetic effects of the scattered neutrons in the super-prompt critical state include that the reactivity increases, the pulse wave is broadened, and the fission yield is enlarged by scattering neutrons. The numerical simulation method can be used to forecast the kinetic effect of scattered neutrons produced by objects out of the pulse reactor, and it is valuable to upgrade the nuclear safety of a pulse reactor.

李兵, 鲁艺, 高辉. 散射中子对超瞬发临界系统动态行为的影响[J]. 强激光与粒子束, 2016, 28(5): 056001. Li Bing, Lu Yi, Gao Hui. Kinetic effect of scattering neutrons on super-prompt critical system[J]. High Power Laser and Particle Beams, 2016, 28(5): 056001.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!