The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields
Ultra-intense laser pulses can create sufficiently strong fields to probe quantum electrodynamics effects in a novel regime. By colliding a 60 GeV electron bunch with a laser pulse focussed to the maximum achievable intensity of 10 ^23 W cm ^−2 , we can reach fields much stronger than the critical S...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ade46b |
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| _version_ | 1839655651448455168 |
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| author | L A Ingle C D Arran M C Oxley T G Blackburn S V Bulanov C D Murphy C P Ridgers |
| author_facet | L A Ingle C D Arran M C Oxley T G Blackburn S V Bulanov C D Murphy C P Ridgers |
| author_sort | L A Ingle |
| collection | DOAJ |
| description | Ultra-intense laser pulses can create sufficiently strong fields to probe quantum electrodynamics effects in a novel regime. By colliding a 60 GeV electron bunch with a laser pulse focussed to the maximum achievable intensity of 10 ^23 W cm ^−2 , we can reach fields much stronger than the critical Schwinger field in the electron rest frame. When the ratio of these fields $\chi_\mathrm{e}\gg1$ we find that the hard ( $ \gt\!\!\!25$ GeV) radiation from the electron has a substantial contribution from spin-light. 33% more photons are produced above this energy due to spin-light, the radiation resulting from the acceleration of the electron’s intrinsic magnetic moment. This increase in high-energy photons results in 14% more positrons produced with energy above 25 GeV. Furthermore, the enhanced photon production due to spin-light results in a 46% increase in the electron recoil radiation reaction. These observable signatures provide a potential route to observing spin-light in the strongly quantum regime ( $\chi_\mathrm{e}\gg1$ ) for the first time. |
| format | Article |
| id | doaj-art-3a636a5124fd49c8bc6f80a480c1e10c |
| institution | Matheson Library |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-3a636a5124fd49c8bc6f80a480c1e10c2025-06-25T06:09:24ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127606430210.1088/1367-2630/ade46bThe effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fieldsL A Ingle0https://orcid.org/0000-0002-9749-8321C D Arran1https://orcid.org/0000-0002-8644-8118M C Oxley2https://orcid.org/0009-0002-4562-9059T G Blackburn3https://orcid.org/0000-0002-3681-356XS V Bulanov4https://orcid.org/0000-0001-8305-0289C D Murphy5https://orcid.org/0000-0003-3849-3229C P Ridgers6https://orcid.org/0000-0002-4078-0887York Plasma Institute , University of York, Heslington, York, YO10 5DQ, United KingdomYork Plasma Institute , University of York, Heslington, York, YO10 5DQ, United KingdomYork Plasma Institute , University of York, Heslington, York, YO10 5DQ, United KingdomDepartment of Physics, University of Gothenburg , SE-41296 Gothenburg, SwedenExtreme Light Infrastructure ERIC, ELI-Beamlines Facility , Za Radnici 835, Dolni Brezany 25241, Czech RepublicYork Plasma Institute , University of York, Heslington, York, YO10 5DQ, United KingdomYork Plasma Institute , University of York, Heslington, York, YO10 5DQ, United KingdomUltra-intense laser pulses can create sufficiently strong fields to probe quantum electrodynamics effects in a novel regime. By colliding a 60 GeV electron bunch with a laser pulse focussed to the maximum achievable intensity of 10 ^23 W cm ^−2 , we can reach fields much stronger than the critical Schwinger field in the electron rest frame. When the ratio of these fields $\chi_\mathrm{e}\gg1$ we find that the hard ( $ \gt\!\!\!25$ GeV) radiation from the electron has a substantial contribution from spin-light. 33% more photons are produced above this energy due to spin-light, the radiation resulting from the acceleration of the electron’s intrinsic magnetic moment. This increase in high-energy photons results in 14% more positrons produced with energy above 25 GeV. Furthermore, the enhanced photon production due to spin-light results in a 46% increase in the electron recoil radiation reaction. These observable signatures provide a potential route to observing spin-light in the strongly quantum regime ( $\chi_\mathrm{e}\gg1$ ) for the first time.https://doi.org/10.1088/1367-2630/ade46bQEDspinradiationsimulation |
| spellingShingle | L A Ingle C D Arran M C Oxley T G Blackburn S V Bulanov C D Murphy C P Ridgers The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields New Journal of Physics QED spin radiation simulation |
| title | The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields |
| title_full | The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields |
| title_fullStr | The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields |
| title_full_unstemmed | The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields |
| title_short | The effect of the electron’s spin magnetic moment on quantum radiation in strong electromagnetic fields |
| title_sort | effect of the electron s spin magnetic moment on quantum radiation in strong electromagnetic fields |
| topic | QED spin radiation simulation |
| url | https://doi.org/10.1088/1367-2630/ade46b |
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