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Four-body treatment of the antihydrogen-positronium system: binding, structure, resonant states and collisions
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Theoretical Chemistry.
Tohoku Univ, Dept Chem, Sendai, Miyagi 9808578, Japan.
Tohoku Univ, Dept Chem, Sendai, Miyagi 9808578, Japan.
Stockholm Univ, Dept Phys, S-10691 Stockholm, Sweden.
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2019 (English)In: Hyperfine Interactions, Springer, 2019, Vol. 240, article id 46Conference paper, Published paper (Refereed)
Abstract [en]

We have developed a coupled-rearrangement-channel method allowing the rigorous non-adiabatic treatment of the multi-channel scattering problem for four particles. We present the study of the binding, resonant and collisional properties of the (H) over bar -Ps system with the total angular momentum J = 0(+) (singlet positronic configuration). The binding energy, the life-times of the resonant states and the collisional cross sections are calculated and discussed. We present the preliminary cross sections for the elastic and inelastic (H) over bar -Ps scattering, notably for the excitation of Ps and for the rearrangement reaction producing the (H) over bar (+) ions.

Place, publisher, year, edition, pages
Springer, 2019. Vol. 240, article id 46
Keywords [en]
Antihydrogen, Positronium, Collisions
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:uu:diva-384079DOI: 10.1007/s10751-019-1572-0ISI: 000467083400007OAI: oai:DiVA.org:uu-384079DiVA, id: diva2:1326735
Conference
13th International Conference on Low Energy Antiproton Physics (LEAP), MAR 12-16, 2018, Paris, FRANCE
Funder
Swedish Research CouncilAvailable from: 2019-06-18 Created: 2019-06-18 Last updated: 2019-06-18Bibliographically approved

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Froelich, PiotrPiszczatowski, Konrad
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