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On the binding energies of antihydrogen formed by the interactions of antiprotons in cold positron plasmas

S Jonsell Orcid Logo, Michael Charlton

Journal of Physics B: Atomic, Molecular and Optical Physics, Volume: 54, Issue: 2, Start page: 025001

Swansea University Author: Michael Charlton

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Abstract

The binding energies of antihydrogen atoms formed when antiprotons are mixed with positron plasmas having densities ranging from 1013–1015 m−3, and at temperatures of 5–30 K, have been investigated using simulations. Major changes in the distribution of binding energies are observed, with more stron...

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Published in: Journal of Physics B: Atomic, Molecular and Optical Physics
ISSN: 0953-4075 1361-6455
Published: IOP Publishing 2021
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa59237
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Abstract: The binding energies of antihydrogen atoms formed when antiprotons are mixed with positron plasmas having densities ranging from 1013–1015 m−3, and at temperatures of 5–30 K, have been investigated using simulations. Major changes in the distribution of binding energies are observed, with more strongly bound states evident at the higher densities, and at lower temperatures. For deeper binding, the distribution of binding energies follows a power-law which is found to be strongly dependent upon plasma properties and the strength of the applied magnetic field. The underpinning role of collisions in determining the binding energies is explored.
Keywords: antihydrogen, antiprotons, binding energy, positron, plasma
College: Faculty of Science and Engineering
Funders: Swedish Research Council (VR) Grant No. 2017-03822
Issue: 2
Start Page: 025001