摘要
本文叙述具有给定动能的离子在固体中传输及引起原子碰撞过程的数值计算程序,包括原理、物理模型、计算步骤和适用范围。在本程序计算中采用了最新的核散射截面,用三次B-样条插值技巧,从而提高运算速度和计算精度。用本程序计算了不同能量的离子,入射到半无限固体中(可为单元素或复合元素)的射程分布、能量沉积、辐射损伤和反射系数等重要输运量。
A numerical Program is described. It can display the transport process of ions and the correspond cascade process in solids. It includes principle, physical models, calculation procedure and the range used. A newest nuclear scattering cross - section is used in this program. The Cub-Spline interpolation method is also used in order to raise calculation speed and precision. Some calculation results are given such as the range distribution, energy deposition, radiation damage distribution in semi-infinite medium by included ions with different energy.
出处
《计算物理》
CSCD
北大核心
1991年第1期47-56,共10页
Chinese Journal of Computational Physics
关键词
离子
输运
两群模型
数值计算
程序
atomic collision, harmonic function, Lax- Wendroff differencing scheme.
