Collisions of low-energy antiprotons with molecular hydrogen: ionization, excitation and stopping power

TL;DR

This paper presents a detailed theoretical study of how low-energy antiprotons interact with molecular hydrogen, focusing on ionization, excitation, and energy loss across a wide energy range.

Contribution

It introduces a time-dependent coupled-channel method to accurately compute collision cross sections and energy spectra for antiproton-molecular hydrogen interactions.

Findings

Calculated ionization and excitation cross sections across 8 keV to 4000 keV.

Provided energy spectra for antiproton and proton collisions.

Enhanced understanding of energy loss mechanisms for low-energy antiprotons.

Abstract

A time-dependent coupled-channel approach was used to calculate ionization, excitation, and energy-loss cross sections as well as energy spectra for antiproton and proton collisions with molecular hydrogen for impact energies 8 keV < E < 4000 keV.