摘要
根据裂变扩散模型,把裂变核的形变运动看成是一种准布朗粒子在裂变势作用下的扩散过程.通过Monte-Carlo方法模拟这种布朗粒子在两维相空间内的运动,研究了核粘滞性对裂变过程的影响;解释了裂变过程中的耗散现象.在各种粘滞系数下,对于裂变速率,断点动能等动力学置的数值计算结果是合理的.此法易于推广用来研究多维扩散问题.
According to the fission diffusion model, the deformation motion of fission nucleues is regarded as a diffusion process of quasi-Brownian particles under fission potential, Through simulating such Brownian motion in two dimensional phase space by Monte-Carlo method, the effect of nuclear viscosity on Brownian particle diffusion is studied, Dynamical quantities, such as fission rate, kinetic energy distribution on scission, and so on are numerally calculated for various viscosity coefficients, The results are reasonable in physics, This method can be easily extended to deal with multi-dimensional diffusion problems.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第2期164-172,共9页
High Energy Physics and Nuclear Physics
