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

Abstract

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.

27 pages, 12 figures

References in corpus (5)

• Nonsequential two-photon double ionization of helium
• Control of charge migration in molecules by ultrashort laser pulses
• Agreement at last: an experimental and theoretical study on the single ionization of helium by fast proton impact
• Low-energy antiproton physics and the FLAIR facility
• Classical trajectory Monte Carlo model calculations for the antiproton-induced ionization of atomic hydrogen at low impact energy

Cited by in corpus (3)

• Doubly differential cross sections for ionization of lithium atom by protons and O${}^{8+}$ ions
• Electron Emission in Antiproton-Hydrogen Interactions Studied with the One-Centre Basis Generator Method
• Coulomb wave discrete variable method for calculation of the fully differential cross sections of antiproton impact ionization of hydrogen atom