Abstract

In the present work, the fully differential cross section of single ionization of helium atom is calculated by fast proton impact. The calculations are done as a four-body formalism and by using a post-version continuum distorted wave theory with considering symmetric wave functions in the both initial and final channels. The ionization is considered from the ground and \(2^{1}S\) excited states of helium atom. In order to investigate the role of the static electronic correlations, the calculations are performed by single-parameter Hylleraas and two-parameter Silverman as the ground state of helium atom wave functions. The results of the present theory are compared with the experiment in 1MeV proton impact energy and various values of the ejected electron energy and momentum transfer in the scattering and azimuthal planes. The results show that the present theory is able to predict the binary and recoil peaks as well as the experiment for ejected electron energies and momentum transfers are discussed in this manuscript.

Graphic Abstract

中文翻译：

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使用版本后连续谱畸变波形式论计算质子碰撞引起的氦原子单电离的全微分截面

摘要

在目前的工作中，氦原子单次电离的全微分截面是通过快速质子碰撞来计算的。计算是作为四体形式主义进行的，并使用了后版本连续谱扭曲波理论，同时考虑了初始通道和最终通道中的对称波函数。从地面和\（2 ^ {1} S \）考虑电离氦原子的激发态。为了研究静态电子相关性的作用，计算是通过单参数Hylleraas和两参数Silverman作为氦原子波函数的基态进行的。将本理论的结果与1MeV质子撞击能量以及在散射平面和方位平面中的各种射出电子能量值和动量传递值的实验进行了比较。结果表明，本理论能够预测二元峰和反冲峰，并且在本文中讨论了喷射电子能量和动量传递的实验。

图形摘要