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Antihydrogen chemistry

Mark C. Zammit Orcid Logo, Christopher Baker Orcid Logo, Svante Jonsell Orcid Logo, Stefan Eriksson Orcid Logo, Michael Charlton

Physical Review A, Volume: 111, Issue: 5

Swansea University Authors: Christopher Baker Orcid Logo, Stefan Eriksson Orcid Logo, Michael Charlton

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DOI (Published version): 10.1103/physreva.111.050101

Abstract

A survey of antimatter reactions is presented, including the formation of the antihydrogen atom and anionic, cationic, and molecular species by collisional and radiative processes. Our approach is rooted in the detailed knowledge available for many matter counterpart (hydrogenic) reactions, due to t...

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Published in: Physical Review A
ISSN: 2469-9926 2469-9934
Published: American Physical Society (APS) 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa69611
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last_indexed 2025-07-17T04:47:55Z
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spelling 2025-07-16T11:52:19.3373084 v2 69611 2025-06-02 Antihydrogen chemistry 0c72afb63bd0c6089fc5b60bd096103e 0000-0002-9448-8419 Christopher Baker Christopher Baker true false 785cbd474febb1bfa9c0e14abaf9c4a8 0000-0002-5390-1879 Stefan Eriksson Stefan Eriksson true false d9099cdd0f182eb9a1c8fc36ed94f53f Michael Charlton Michael Charlton true false 2025-06-02 EAAS A survey of antimatter reactions is presented, including the formation of the antihydrogen atom and anionic, cationic, and molecular species by collisional and radiative processes. Our approach is rooted in the detailed knowledge available for many matter counterpart (hydrogenic) reactions, due to their importance in controlling early Universe chemistry. We point out that the availability of trapped antihydrogen at densities similar to those pertaining to the epoch of hydrogen chemistry will soon be available. In addition, using modern atomic physics techniques, it should be feasible to control antimatter in the laboratory to facilitate antihydrogen chemistry. Our purpose is to summarize what is known from hydrogen chemistry that is of relevance for antimatter and to indicate, based on possible reaction rates, which processes may be fruitful to pursue to create new antimatter entities as probes of fundamental symmetries. We include antihydrogen, positrons, and antiprotons in our discussion and additionally the electron due to its propensity to form positronium and perhaps to participate in certain reactions. We attempt to indicate whether further theoretical/computational work is necessary to add to the assessment of reaction rates, and we discount processes where the projected rates are too low to be of interest, given foreseeable experimental capabilities. Journal Article Physical Review A 111 5 American Physical Society (APS) 2469-9926 2469-9934 2 5 2025 2025-05-02 10.1103/physreva.111.050101 Perspective COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University Another institution paid the OA fee C.J.B., S.E., and M.C. are grateful to the EPSRC (UK) for their support of the antimatter research programme at Swansea .S.J. acknowledges support from the Swedish Research Council (VR), grant 2021-04005. M.C.Z. would like to specifically acknowledge the support of the Los Alamos National Laboratory’s (LANL) Laboratory Directed Research and Development program Project No. 20240391ER and the ASC PEM Atomic Physics Project. 2025-07-16T11:52:19.3373084 2025-06-02T12:05:46.6533260 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Mark C. Zammit 0000-0003-0473-379x 1 Christopher Baker 0000-0002-9448-8419 2 Svante Jonsell 0000-0003-4969-1714 3 Stefan Eriksson 0000-0002-5390-1879 4 Michael Charlton 5 69611__34372__132a6580a9f14f32b75f1519ae10db1b.pdf Zammit_PRA_111_050101_2025.pdf 2025-06-02T12:10:15.9637559 Output 600280 application/pdf Version of Record true Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. true eng https://creativecommons.org/licenses/by/4.0/
title Antihydrogen chemistry
spellingShingle Antihydrogen chemistry
Christopher Baker
Stefan Eriksson
Michael Charlton
title_short Antihydrogen chemistry
title_full Antihydrogen chemistry
title_fullStr Antihydrogen chemistry
title_full_unstemmed Antihydrogen chemistry
title_sort Antihydrogen chemistry
author_id_str_mv 0c72afb63bd0c6089fc5b60bd096103e
785cbd474febb1bfa9c0e14abaf9c4a8
d9099cdd0f182eb9a1c8fc36ed94f53f
author_id_fullname_str_mv 0c72afb63bd0c6089fc5b60bd096103e_***_Christopher Baker
785cbd474febb1bfa9c0e14abaf9c4a8_***_Stefan Eriksson
d9099cdd0f182eb9a1c8fc36ed94f53f_***_Michael Charlton
author Christopher Baker
Stefan Eriksson
Michael Charlton
author2 Mark C. Zammit
Christopher Baker
Svante Jonsell
Stefan Eriksson
Michael Charlton
format Journal article
container_title Physical Review A
container_volume 111
container_issue 5
publishDate 2025
institution Swansea University
issn 2469-9926
2469-9934
doi_str_mv 10.1103/physreva.111.050101
publisher American Physical Society (APS)
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
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description A survey of antimatter reactions is presented, including the formation of the antihydrogen atom and anionic, cationic, and molecular species by collisional and radiative processes. Our approach is rooted in the detailed knowledge available for many matter counterpart (hydrogenic) reactions, due to their importance in controlling early Universe chemistry. We point out that the availability of trapped antihydrogen at densities similar to those pertaining to the epoch of hydrogen chemistry will soon be available. In addition, using modern atomic physics techniques, it should be feasible to control antimatter in the laboratory to facilitate antihydrogen chemistry. Our purpose is to summarize what is known from hydrogen chemistry that is of relevance for antimatter and to indicate, based on possible reaction rates, which processes may be fruitful to pursue to create new antimatter entities as probes of fundamental symmetries. We include antihydrogen, positrons, and antiprotons in our discussion and additionally the electron due to its propensity to form positronium and perhaps to participate in certain reactions. We attempt to indicate whether further theoretical/computational work is necessary to add to the assessment of reaction rates, and we discount processes where the projected rates are too low to be of interest, given foreseeable experimental capabilities.
published_date 2025-05-02T05:22:48Z
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