CAJ | 학술논문

本文基于 Bohr-Lindhard （B-L ）模型，考虑了碰撞双方的电子密度分布，计算了能量为20～900 keV/u的B2＋、C3＋、N4＋及O5＋等类锂离子与He原子碰撞中的单电子丢失（SEL ）、伴随单电离的单电子丢失（SELSI）、伴随双电离的单电子丢失（SELDI）等截面对能量的依赖曲线，计算结果与已有的实验数据符合较好。分析发现，对于一给定的过程，较重的离子有较小的有效碰撞参数范围；对于同一种入射离子，SEL、SELSI和SELDI等过程对应的有效碰撞参数范围依次减小。
본문기우 Bohr-Lindhard （B-L ）모형，고필료팽당쌍방적전자밀도분포，계산료능량위20～900 keV/u적B2＋、C3＋、N4＋급O5＋등류리리자여He원자팽당중적단전자주실（SEL ）、반수단전리적단전자주실（SELSI）、반수쌍전리적단전자주실（SELDI）등절면대능량적의뢰곡선，계산결과여이유적실험수거부합교호。분석발현，대우일급정적과정，교중적리자유교소적유효팽당삼수범위；대우동일충입사리자，SEL、SELSI화SELDI등과정대응적유효팽당삼수범위의차감소。
The cross sections for single-electron loss (SEL) ,single-electron loss associ-ated with single ionization (SELSI ) and single-electron loss associated with double ionization (SELDI) in collisions of lithium-like ions B2+ ,C3+ ,N4+ and O5+ with helium atom in the energy range from 20 to 900 keV/u were calculated by considering the distri-bution of both target and projectile electrons based on the Bohr-Lindhard (B-L) model . The calculated results were compared with the available experimental data .The analysis show s that the heavier the ion ,the smaller the impact parameter for a given process and the impact parameters for SEL ,SELSI and SELDI decrease successively for a given ion .