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An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion
New Journal of Physics, Volume: 24, Issue: 2, Start page: 023016
Swansea University Author: Steven Jones
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DOI (Published version): 10.1088/1367-2630/ac4ef3
Abstract
I present a novel scheme for producing cold (magnetically trappable) atomic hydrogen, based on threshold photodissociation of the BaH+ molecular ion. BaH+ can be sympathetically cooled using laser cooled Ba+ in an ion trap, before it is photodissociated on the single photon A1Σ+ ← X1Σ+ transition. T...
Published in: | New Journal of Physics |
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ISSN: | 1367-2630 |
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IOP Publishing
2022
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URI: | https://cronfa.swan.ac.uk/Record/cronfa60733 |
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2022-08-26T10:35:51.1889554 v2 60733 2022-08-04 An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion 9708d801e2b5deef9428227bd2bfcbb1 Steven Jones Steven Jones true false 2022-08-04 SPH I present a novel scheme for producing cold (magnetically trappable) atomic hydrogen, based on threshold photodissociation of the BaH+ molecular ion. BaH+ can be sympathetically cooled using laser cooled Ba+ in an ion trap, before it is photodissociated on the single photon A1Σ+ ← X1Σ+ transition. The small mass ratio between Ba+ and BaH+ ensures a strong overlap within the ion trap for sympathetic cooling, while the large mass ratio between BaH+ and H means that the released hydrogen can be up to 139 times colder than the parent molecular ions. I examine the hydrogen production rate, and describe how the trap dynamics and photodissociation laser detuning influence the achievable energies. The low infrastructure costs and the ion trap nature of the scheme make it suitable for loading hydrogen into an antihydrogen experiment. This would support a direct matter–antimatter comparison, which could provide important clues as to why our Universe contains so little antimatter. Journal Article New Journal of Physics 24 2 023016 IOP Publishing 1367-2630 16 2 2022 2022-02-16 10.1088/1367-2630/ac4ef3 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University Other This work was supported by the EPSRC. 2022-08-26T10:35:51.1889554 2022-08-04T16:31:44.2834726 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Steven Jones 1 60733__24849__422517d7ed7e42de8f0a1caa342ff8d3.pdf 60733.VOR.pdf 2022-08-04T16:36:33.8364315 Output 2157985 application/pdf Version of Record true Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence true eng https://creativecommons.org/licenses/by/4.0/ |
title |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion |
spellingShingle |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion Steven Jones |
title_short |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion |
title_full |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion |
title_fullStr |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion |
title_full_unstemmed |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion |
title_sort |
An ion trap source of cold atomic hydrogen via photodissociation of the BaH<sup>+</sup> molecular ion |
author_id_str_mv |
9708d801e2b5deef9428227bd2bfcbb1 |
author_id_fullname_str_mv |
9708d801e2b5deef9428227bd2bfcbb1_***_Steven Jones |
author |
Steven Jones |
author2 |
Steven Jones |
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Journal article |
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New Journal of Physics |
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24 |
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2 |
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023016 |
publishDate |
2022 |
institution |
Swansea University |
issn |
1367-2630 |
doi_str_mv |
10.1088/1367-2630/ac4ef3 |
publisher |
IOP Publishing |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics |
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description |
I present a novel scheme for producing cold (magnetically trappable) atomic hydrogen, based on threshold photodissociation of the BaH+ molecular ion. BaH+ can be sympathetically cooled using laser cooled Ba+ in an ion trap, before it is photodissociated on the single photon A1Σ+ ← X1Σ+ transition. The small mass ratio between Ba+ and BaH+ ensures a strong overlap within the ion trap for sympathetic cooling, while the large mass ratio between BaH+ and H means that the released hydrogen can be up to 139 times colder than the parent molecular ions. I examine the hydrogen production rate, and describe how the trap dynamics and photodissociation laser detuning influence the achievable energies. The low infrastructure costs and the ion trap nature of the scheme make it suitable for loading hydrogen into an antihydrogen experiment. This would support a direct matter–antimatter comparison, which could provide important clues as to why our Universe contains so little antimatter. |
published_date |
2022-02-16T04:19:05Z |
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1763754267660779520 |
score |
10.99342 |