Ionization of atomic hydrogen by antiproton impact
Ionization of atomic hydrogen by antiproton impact
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反质子撞击使原子氢电离
DOI：
10.1103/physreva.61.062712
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发表时间：
2000
影响因子：
2.9
通讯作者：
A. Ohsaki
中科院分区：
文献类型：
--
作者：
A. Igarashi;S. Nakazaki;A. Ohsaki
本文用密耦方法计算了氢原子与反质子的电离和激发截面，其中波函数仅在质子上按原子态展开。所得的总截面具有很好的收敛性，并与其它基于大基组密耦方法的计算结果相一致。将密耦合方法得到的波函数代入跃迁振幅的积分形式，计算了电离电子的角分布。100千电子伏以上，电离电子的角分布进行比较质子和反质子的影响。
The ionization and excitation cross sections of atomic hydrogen with antiprotons are calculated using the close-coupling method, where the wave function is expanded by atomic states only on protons. The resulting total cross sections are in good convergence and in agreement with other calculations based on the close-coupling method with considerably large basis set. The angular distribution of ionized electrons is calculated by substituting the obtained wave function in the close-coupling method into the integral form of the transition amplitude. Above 100 keV, the angular distributions of ionized electrons are compared for proton- and antiproton impacts.