Ionization and charge transfer in proton-helium collisions
Ionization and charge transfer in proton-helium collisions
复制标题
质子-氦碰撞中的电离和电荷转移
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
D. Flower
中科院分区：
文献类型：
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作者：
H. Slim;E. Heck;B. Bransden;D. Flower
计算了质子与氦原子碰撞中单次电离的横截面，射弹能量范围为 25-100 keV。采用半经典撞击参数方法，其基础包括（He）目标上的 22 个状态和弹丸上的 29 个状态。与 Shah 等人的测量结果非常一致。 （1989）。研究发现，氦中心包含伪连续态可以显着改变捕获氢束缚态的总横截面，从而提高与测量的一致性。
Cross sections have been calculated for single ionization in collisions between protons and helium atoms, in the range of projectile energies 25-100 keV. The semiclassical impact parameter method was employed, with a basis comprising 22 states on the (He) target and 29 states on the projectile. Good agreement is obtained with the measurements of Shah et al. (1989). The inclusion of pseudo-continuum states on the helium centre is found to significantly modify the total cross section for capture into the bound states of hydrogen, leading to improved agreement with the measurements.