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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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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 detailedknowledge available for many matter counterpart (hydrogenic) reactions, due to the...

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Published in: Physical Review A
ISSN: 2469-9926 2469-9934
Published: American Physical Society (APS)
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URI: https://cronfa.swan.ac.uk/Record/cronfa69611
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 detailedknowledge available for many matter counterpart (hydrogenic) reactions, due to their importance in controllingearly Universe chemistry. We point out that the availability of trapped antihydrogen at densities similar to thosepertaining to the epoch of hydrogen chemistry will soon be available. In addition, using modern atomic physicstechniques, it should be feasible to control antimatter in the laboratory to facilitate antihydrogen chemistry. Ourpurpose is to summarize what is known from hydrogen chemistry that is of relevance for antimatter and toindicate, based on possible reaction rates, which processes may be fruitful to pursue to create new antimatterentities as probes of fundamental symmetries. We include antihydrogen, positrons, and antiprotons in ourdiscussion and additionally the electron due to its propensity to form positronium and perhaps to participatein certain reactions. We attempt to indicate whether further theoretical/computational work is necessary to addto the assessment of reaction rates, and we discount processes where the projected rates are too low to be ofinterest, given foreseeable experimental capabilities
College: Faculty of Science and Engineering
Funders: EPSRC
Issue: 5