摘要
用ＭｏｎｔｅＣａｒｌｏ法模拟计算了３０ｋｅＶ和２００ｋｅＶ的矿与１１０ｋｅＶ的Ｆｅ＋在模拟细胞中的射程分布和径迹结构，并将１１０ｋｅＶＦｅ＋模拟计算的结果与ＲＳＢ测量的结果相比较，发现计算与测量的结果吻合较好，离子的作用范围小于１μｍ．计算和实验的结果都说明能量相当低的重离子不大可能直接作用引起麦胚深层生物效应．在不考虑热扩散效应的情况下，还用ＭｏｎｔｅＣａｒｌｏ方法模拟计算了２００ｋｅ的Ｎ＋产生的级联原子在模拟的细胞中的作用范围，得出其虽有前冲但作用范围仍然小于１．５μｍ的结论．最后讨论了低能重离子注入出现生物效应的可能原因．
The depth-distributions and tracks of 200keV N+and 110keV Fe+ions in cells have been calculated with Moose Carlo method.The calculated results are similar to those measured by RBS.The dTth of ions obtained from the calculation or the experiments is all smaller than the length of a cell.The distributions of cascade atoms produced by 200keV N+ implanted intO a cell model have also been calculated. All these calculations indicate that neither low-energy heaVy ions themselves nor the cascade atoms can directly produce biological effects in cells. Finally some possible reasons for the effects are presented.
出处
《核技术》
CAS
CSCD
北大核心
1995年第12期759-764,共6页
Nuclear Techniques
基金
国家自然科学基金
