CAJ | 학술논문

介绍带电离子在物质中输运模拟的详细历史法，开发模拟程序ITR（ ions transport and reaction），同时实现抽取离子飞行步长的基本方法和脉冲近似法，计算结果与CORTEO及TRIM程序的结果比较符合很好。讨论两种步长选取方法，对脉冲近似法的最大步长进行限制，分析CORTEO程序与TRIM程序计算结果差别的主要原因。 ITR同时具有TRIM和CORTEO的优点，采用脉冲近似法减少需要计算的核碰撞次数，通过索引（ Index）方法对散射角的计算进行加速，计算效率大幅提高。
개소대전리자재물질중수운모의적상세역사법，개발모의정서ITR（ ions transport and reaction），동시실현추취리자비행보장적기본방법화맥충근사법，계산결과여CORTEO급TRIM정서적결과비교부합흔호。토론량충보장선취방법，대맥충근사법적최대보장진행한제，분석CORTEO정서여TRIM정서계산결과차별적주요원인。 ITR동시구유TRIM화CORTEO적우점，채용맥충근사법감소수요계산적핵팽당차수，통과색인（ Index）방법대산사각적계산진행가속，계산효솔대폭제고。
Strategy of detailed history method is summarized, depending on which code ITR ( ions transport and reaction ) was developed. Both basic method and impulse approximation method to select flight path of ions are complemented respectively. Numerical results agree with CORTEO and TRIM very well. Relation between two methods is discussed. We found reason of CORTEO results differ from TRIM’ s by limiting maximum of flight length derived by impluse approximation method. ITR has advantages of TRIM and CORTEO. Impluse approximation method reduces nuclear collisions simulated. Index technique is used to calculate scattering angle, which significantly improves efficiency of ITR.