Antiproton collisions with excited positronium

Charlton, Michael; Ambalampitiya, H. B.; Fabrikant, I. I.; Kalinkin, I.; Fursa, D. V.; Kadyrov, A. S.; Bray, I.

doi:10.1103/physreva.107.012814

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Antiproton collisions with excited positronium

Michael Charlton, H. B. Ambalampitiya

, I. I. Fabrikant

, I. Kalinkin, D. V. Fursa

, A. S. Kadyrov

, I. Bray

Physical Review A, Volume: 107, Issue: 1

Swansea University Author: Michael Charlton

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DOI (Published version): 10.1103/physreva.107.012814

Abstract

We present results of calculations of several processes resulting from positronium (Ps) collisions with antiprotons: antihydrogen formation, Ps breakup, and nPs-changing collisions. Calculations utilize the quantum convergent close-coupling (CCC) method and the classical trajectory Monte Carlo (CTMC...

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Published in:	Physical Review A
ISSN:	2469-9926 2469-9934
Published:	American Physical Society (APS) 2023
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa62580
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first_indexed	2023-02-06T09:05:12Z
last_indexed	2023-03-04T04:14:37Z
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spelling	2023-03-03T14:33:13.5345496 v2 62580 2023-02-06 Antiproton collisions with excited positronium d9099cdd0f182eb9a1c8fc36ed94f53f Michael Charlton Michael Charlton true false 2023-02-06 FGSEN We present results of calculations of several processes resulting from positronium (Ps) collisions with antiprotons: antihydrogen formation, Ps breakup, and nPs-changing collisions. Calculations utilize the quantum convergent close-coupling (CCC) method and the classical trajectory Monte Carlo (CTMC) method. We identify a region of Ps principal quantum numbers nPs and Ps energies where the classical description is valid and where the CCC calculations become computationally too expensive. This allows us to present the most complete and reliable set of cross sections in a broad range of nPs and initial orbital momentum quantum numbers lPs which are necessary for experiments with antihydrogen at CERN. Journal Article Physical Review A 107 1 American Physical Society (APS) 2469-9926 2469-9934 19 1 2023 2023-01-19 10.1103/physreva.107.012814 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University The Curtin authors acknowledge the Texas Advanced Computing Center (TACC) at The University of Texas. , the Australasian Leadership Computing Grants scheme of the National Computing Infrastructure, and The Pawsey Supercomputer Center for providing HPC resources, and also the support of the Australian Research Council. M.C. thanks the EPSRC (UK) for supporting his antihydrogen research. H.A. and I.I.F. were supported by the US National Science Foundation under Grant No. PHY-1803744 and by resources of the Holland Computing Center of the University of Nebraska, which receives support from the Nebraska Research Initiative. 2023-03-03T14:33:13.5345496 2023-02-06T09:00:03.5611386 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Michael Charlton 1 H. B. Ambalampitiya 0000-0002-5843-4798 2 I. I. Fabrikant 0000-0002-9384-9454 3 I. Kalinkin 4 D. V. Fursa 0000-0002-3951-9016 5 A. S. Kadyrov 0000-0002-5804-8811 6 I. Bray 0000-0001-7554-8044 7 62580__26515__91c89c9b4f8445b28aee02ede6ab5bb4.pdf 62580.pdf 2023-02-09T14:59:37.3450860 Output 988889 application/pdf Accepted Manuscript true true eng
title	Antiproton collisions with excited positronium
spellingShingle	Antiproton collisions with excited positronium Michael Charlton
title_short	Antiproton collisions with excited positronium
title_full	Antiproton collisions with excited positronium
title_fullStr	Antiproton collisions with excited positronium
title_full_unstemmed	Antiproton collisions with excited positronium
title_sort	Antiproton collisions with excited positronium
author_id_str_mv	d9099cdd0f182eb9a1c8fc36ed94f53f
author_id_fullname_str_mv	d9099cdd0f182eb9a1c8fc36ed94f53f_***_Michael Charlton
author	Michael Charlton
author2	Michael Charlton H. B. Ambalampitiya I. I. Fabrikant I. Kalinkin D. V. Fursa A. S. Kadyrov I. Bray
format	Journal article
container_title	Physical Review A
container_volume	107
container_issue	1
publishDate	2023
institution	Swansea University
issn	2469-9926 2469-9934
doi_str_mv	10.1103/physreva.107.012814
publisher	American Physical Society (APS)
college_str	Faculty of Science and Engineering
hierarchytype
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
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description	We present results of calculations of several processes resulting from positronium (Ps) collisions with antiprotons: antihydrogen formation, Ps breakup, and nPs-changing collisions. Calculations utilize the quantum convergent close-coupling (CCC) method and the classical trajectory Monte Carlo (CTMC) method. We identify a region of Ps principal quantum numbers nPs and Ps energies where the classical description is valid and where the CCC calculations become computationally too expensive. This allows us to present the most complete and reliable set of cross sections in a broad range of nPs and initial orbital momentum quantum numbers lPs which are necessary for experiments with antihydrogen at CERN.
published_date	2023-01-19T04:22:18Z
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Antiproton collisions with excited positronium

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