质子与Be原子的碰撞电离过程研究

胡亚华; 叶丹丹; 祁月盈; 刘晓菊; 刘玲

质子与Be原子的碰撞电离过程研究

嘉兴学院,嘉兴,314001

中国科学院等离子体物理研究所,合肥,230031

北京应用物理与计算数学研究所,北京,100088

Research on collision ionization process of Be atom by proton

摘要: 本文采用初态程函近似一连续扭曲波方法研究了质子和Be原子的碰撞电离过程：计算了入射离子能量从50keV／u到10000keV／u时一阶和二阶微分散射截面随电离电子能量和角度的变化规律，并对各种碰撞电离机理进行了详细讨论；计算所得总截面随入射离子能量的变化规律也与已有数据一致；另外采用FAC代码研究了Be原子的内壳层电子（1s）被电离后的俄歇过程．

关键词:

Abstract: The impact ionization process of Be by H+ is investigated using the continuum-distorted-wave and the eikonal-initial-state (CDW- EIS) approximation in this paper. The single and double differential cross sections are calculated for the projectile energies ranging from 50keV/u to 10000 keV/u. The total cross sections are consistant well with the previous results. The ionization mechanism of soft- collision, electron captured to continuum states and binary-encounter collisions are discussed. The soft-collision ionization mechanism is the mostimportant contributor to the total cross section. Auger process for Be(1s2s2) is under study by adopting the FAC code.

质子与Be原子的碰撞电离过程研究

嘉兴学院,嘉兴,314001

中国科学院等离子体物理研究所,合肥,230031

北京应用物理与计算数学研究所,北京,100088

关键词:

Research on collision ionization process of Be atom by proton

嘉兴学院,嘉兴,314001

中国科学院等离子体物理研究所,合肥,230031

北京应用物理与计算数学研究所,北京,100088

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