In a series of papers we present a comprehensive investigation of the four-body proton-helium differential scattering problem using the two-center wave-packet convergent close-coupling approach in the intermediate energy region where coupling between various channels is important. The approach uses correlated two-electron wave functions for the helium target. For comparison, a recently developed method that reduces the target to an effective single-electron system is also used. In this paper we present calculations of angular differential cross sections for elastic-scattering, target excitation, and electron-capture processes. The results of the two-electron and effective single-electron methods exhibit a good level of agreement. They also agree well with available experimental data. It is concluded that both versions of the wave-packet convergent close-coupling approach are capable of providing a realistic differential picture of all interdependent and interconnected binary processes taking place in proton-helium collisions at intermediate energies.

中文翻译：

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中等能量质子-氦碰撞的差异研究：弹性散射、激发和电子捕获

在一系列论文中，我们使用两中心波包会聚紧密耦合方法在各种通道之间的耦合很重要的中间能量区域中对四体质子 - 氦差分散射问题进行了全面研究。该方法对氦目标使用相关的双电子波函数。为了进行比较，还使用了最近开发的将目标简化为有效单电子系统的方法。在本文中，我们介绍了弹性散射、目标激发和电子捕获过程的角微分截面的计算。双电子方法和有效单电子方法的结果表现出良好的一致性。他们也非常同意现有的实验数据。