摘要
考虑到低能电子 (能量下限为 1eV)在水中输运时的电离 ,激发 ,俘获以及超激发引起的自电离等非弹性散射机制 ,并且考虑到OH+ ,H+ 等自由基的产生和分布 ,运用MonteCarlo方法模拟了电子在水中输运的径迹结构 ,揭示了电子在低能情况下输运时单条轨道的空间分布结构特点 (云团 ,团点和短径迹等空间分布实体 )和包含在大量轨道中的径迹结构的统计性质 ,并通过对比截止能量取 30和 1eV两种情况 ,分析了
The track structure of low energy electrons (with minimum energy of 1eV) in water as a media has keen simulated with Monte Carlo method, taking into account inelastic processes such as ionization, excitation, attachment and auto ionization caused by super excitation, and the yield and distribution of some free radicals. The local energy deposit entities: spur, blob and short track are obtained in any individual track yielded by our program, and radial dose distribution and range as statistical characteristics of 10,000 tracks are also presented. The role of low energy electrons in track structures is analyzed by contrasting with the characteristics of track structures with 1 and 30eV as cutoff energy.
出处
《高能物理与核物理》
CSCD
北大核心
2003年第4期319-323,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金 ( 10 175 0 95 )资助~~
