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中国物理学会期刊

质子与Be原子的碰撞电离过程研究

CSTR: 32037.14.aps.61.243401

Research on collision ionization process of Be atom by proton

CSTR: 32037.14.aps.61.243401
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  • 本文采用初态程函近似-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50 keV/u到10000 keV/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.

     

    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 most important contributor to the total cross section. Auger process for Be(1s2s2) is under study by adopting the FAC code.

     

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