摘要
用蒙特卡罗方法模拟计算了MB型容器中具有β+衰变的放射性气体衰变时放出的 β+粒子在容器内空气中和容器壁上的湮灭几率 .计算结果得到 :β+粒子在容器壁上的湮灭几率远大于在容器内空气中的湮灭几率 ;在壁上的湮灭几率近似与容器壁面积大小成正比 ;尽管气体源是一均匀分布体源 ,但 β+粒子在容器内空气中并非均匀湮灭 。
Using the MC method,β + particle's annihilation probability in the MB's space and on the MB's internal surface are calculated. Some results are gotten from the calculations:the annihilation probability of β + particle on the MB's internal surface is much larger than that inside the MB,and is proportional to the surface area approximately;although the gas source is homogeneous,the annihilation one in MB's space isn't homogeneous profile and gets to maximum in the center of the MB.
出处
《南华大学学报（理工版）》
2003年第2期58-61,66,共5页
Journal of Nanhua University(Science & Engineering)
