Published In

Atoms

Document Type

Article

Publication Date

4-20-2020

Subjects

Photoionization, Proton-antiproton interactions, Antimatter -- Analysis, Particles (Nuclear physics), Hydrogen ions, Radiative transfer

Abstract

To overcome the numerical difficulties inherent in the Maxwell–Boltzmann integral of the velocity-weighted cross section that gives the radiative attachment rate coefficient αRA for producing the negative hydrogen ion H or its antimatter equivalent, the positive antihydrogen ion H¯+ , we found the analytic form for this integral. This procedure is useful for temperatures below 700 K, the region for which the production of H¯+ has potential use as an intermediate stage in the cooling of antihydrogen to ultra-cold (sub-mK) temperatures for spectroscopic studies and probing the gravitational interaction of the anti-atom. Our results, utilizing a 50-term explicitly correlated exponential wave function, confirm our prior numerical results.

Description

© 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

This article belongs to the Special Issue Interactions of Positrons with Matter and Radiation.

DOI

10.3390/atoms8020013

Persistent Identifier

https://archives.pdx.edu/ds/psu/32775

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