Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas
In simulations of a 12.5 PW laser (focussed intensity I = 4 × 10 23 Wcm - 2) striking a solid aluminum target, 10% of the laser energy is converted to gamma-rays. A dense electron-positron plasma is generated with a maximum density of 10 26 m - 3, seven orders of magnitude denser than pure e- e+ pla...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797085729098039296 |
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| author | Ridgers, C Brady, C Duclous, R Kirk, J Bennett, K Arber, T Bell, A |
| author_facet | Ridgers, C Brady, C Duclous, R Kirk, J Bennett, K Arber, T Bell, A |
| author_sort | Ridgers, C |
| collection | OXFORD |
| description | In simulations of a 12.5 PW laser (focussed intensity I = 4 × 10 23 Wcm - 2) striking a solid aluminum target, 10% of the laser energy is converted to gamma-rays. A dense electron-positron plasma is generated with a maximum density of 10 26 m - 3, seven orders of magnitude denser than pure e- e+ plasmas generated with 1PW lasers. When the laser power is increased to 320 PW (I = 10 25 Wcm - 2), 40% of the laser energy is converted to gamma-ray photons and 10% to electron-positron pairs. In both cases, there is strong feedback between the QED emission processes and the plasma physics, the defining feature of the new "QED-plasma" regime reached in these interactions. © 2013 AIP Publishing LLC. |
| first_indexed | 2024-03-07T02:12:04Z |
| format | Journal article |
| id | oxford-uuid:a0ff1122-427d-42b4-85ba-90df631f061b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:12:04Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:a0ff1122-427d-42b4-85ba-90df631f061b2022-03-27T02:09:48ZDense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmasJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a0ff1122-427d-42b4-85ba-90df631f061bEnglishSymplectic Elements at Oxford2013Ridgers, CBrady, CDuclous, RKirk, JBennett, KArber, TBell, AIn simulations of a 12.5 PW laser (focussed intensity I = 4 × 10 23 Wcm - 2) striking a solid aluminum target, 10% of the laser energy is converted to gamma-rays. A dense electron-positron plasma is generated with a maximum density of 10 26 m - 3, seven orders of magnitude denser than pure e- e+ plasmas generated with 1PW lasers. When the laser power is increased to 320 PW (I = 10 25 Wcm - 2), 40% of the laser energy is converted to gamma-ray photons and 10% to electron-positron pairs. In both cases, there is strong feedback between the QED emission processes and the plasma physics, the defining feature of the new "QED-plasma" regime reached in these interactions. © 2013 AIP Publishing LLC. |
| spellingShingle | Ridgers, C Brady, C Duclous, R Kirk, J Bennett, K Arber, T Bell, A Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas |
| title | Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas |
| title_full | Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas |
| title_fullStr | Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas |
| title_full_unstemmed | Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas |
| title_short | Dense electron-positron plasmas and bursts of gamma-rays from laser-generated quantum electrodynamic plasmas |
| title_sort | dense electron positron plasmas and bursts of gamma rays from laser generated quantum electrodynamic plasmas |
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