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arXiv 1702.08285physics.atom-ph
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微分电离截面的相对论计算:在反质子-氢碰撞中的应用

Relativistic calculations of differential ionization cross sections: Application to antiproton-hydrogen collisions

A. I. Bondarev, Y. S. Kozhedub, I. I. Tupitsyn, V. M. Shabaev, G. Plunien

摘要:

本文提出了一种基于Dirac方程计算离子-原子碰撞电离全微分截面的相对论方法。作为非相对论性的基准,该方法被应用于氢原子的反质子碰撞电离。给出了电离的全微分、双微分和单微分截面。讨论了弹丸与靶核之间相互作用的作用。解决了现有理论预测中的几个差异。研究了类氢氙离子在碳核碰撞下电离的相对论效应。

英文摘要:

A new relativistic method based on the Dirac equation for calculating fully differential cross sections for ionization in ion-atom collisions is developed. The method is applied to ionization of the atomic hydrogen by antiproton impact, as a non-relativistic benchmark. The fully differential, as well as various doubly and singly differential cross sections for ionization are presented. The role of the interaction between the projectile and the target nucleus is discussed. Several discrepancies in available theoretical predictions are resolved. The relativistic effects are studied for ionization of hydrogenlike xenon ion under the impact of carbon nuclei.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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