Ionization states for the multipetawatt laser-QED regime
A paradigm shift in the physics of laser-plasma interactions is approaching with the commissioning of multipetawatt laser facilities worldwide. Radiation reaction processes will result in the onset of electron-positron pair cascades and, with that, the absorption and partitioning of the incident las...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2022
|
| _version_ | 1797108152262459392 |
|---|---|
| author | Ouatu, I Spiers, BT Aboushelbaya, R Feng, Q von der Leyen, MW Paddock, RW Timmis, R Ticos, C Krushelnick, KM Norreys, PA |
| author_facet | Ouatu, I Spiers, BT Aboushelbaya, R Feng, Q von der Leyen, MW Paddock, RW Timmis, R Ticos, C Krushelnick, KM Norreys, PA |
| author_sort | Ouatu, I |
| collection | OXFORD |
| description | A paradigm shift in the physics of laser-plasma interactions is approaching with the commissioning of multipetawatt laser facilities worldwide. Radiation reaction processes will result in the onset of electron-positron pair cascades and, with that, the absorption and partitioning of the incident laser energy, as well as the energy transport throughout the irradiated targets. To accurately quantify these effects, one must know the focused intensity on target in situ. In this work, a way of measuring the focused intensity on target is proposed based upon the ionization of xenon gas at low ambient pressure. The field ionization rates from two works [Phys. Rev. A 59, 569 (1999) and Phys. Rev. A 98, 043407 (2018)], where the latter rate has been derived using quantum mechanics, have been implemented in the particle-in-cell code SMILEI [Comput. Phys. Commun. 222, 351 (2018)]. A series of one- and two-dimensional simulations are compared and shown to reproduce the charge states without presenting visible differences when increasing the simulation dimensionality. They provide a way to accurately verify the intensity on target using in situ measurements. |
| first_indexed | 2024-03-07T07:25:23Z |
| format | Journal article |
| id | oxford-uuid:25b6795e-ff10-4f3b-8395-dd75911a00b1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:25:23Z |
| publishDate | 2022 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:25b6795e-ff10-4f3b-8395-dd75911a00b12022-11-14T15:03:00ZIonization states for the multipetawatt laser-QED regimeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:25b6795e-ff10-4f3b-8395-dd75911a00b1EnglishSymplectic ElementsAmerican Physical Society2022Ouatu, ISpiers, BTAboushelbaya, RFeng, Qvon der Leyen, MWPaddock, RWTimmis, RTicos, CKrushelnick, KMNorreys, PAA paradigm shift in the physics of laser-plasma interactions is approaching with the commissioning of multipetawatt laser facilities worldwide. Radiation reaction processes will result in the onset of electron-positron pair cascades and, with that, the absorption and partitioning of the incident laser energy, as well as the energy transport throughout the irradiated targets. To accurately quantify these effects, one must know the focused intensity on target in situ. In this work, a way of measuring the focused intensity on target is proposed based upon the ionization of xenon gas at low ambient pressure. The field ionization rates from two works [Phys. Rev. A 59, 569 (1999) and Phys. Rev. A 98, 043407 (2018)], where the latter rate has been derived using quantum mechanics, have been implemented in the particle-in-cell code SMILEI [Comput. Phys. Commun. 222, 351 (2018)]. A series of one- and two-dimensional simulations are compared and shown to reproduce the charge states without presenting visible differences when increasing the simulation dimensionality. They provide a way to accurately verify the intensity on target using in situ measurements. |
| spellingShingle | Ouatu, I Spiers, BT Aboushelbaya, R Feng, Q von der Leyen, MW Paddock, RW Timmis, R Ticos, C Krushelnick, KM Norreys, PA Ionization states for the multipetawatt laser-QED regime |
| title | Ionization states for the multipetawatt laser-QED regime |
| title_full | Ionization states for the multipetawatt laser-QED regime |
| title_fullStr | Ionization states for the multipetawatt laser-QED regime |
| title_full_unstemmed | Ionization states for the multipetawatt laser-QED regime |
| title_short | Ionization states for the multipetawatt laser-QED regime |
| title_sort | ionization states for the multipetawatt laser qed regime |
| work_keys_str_mv | AT ouatui ionizationstatesforthemultipetawattlaserqedregime AT spiersbt ionizationstatesforthemultipetawattlaserqedregime AT aboushelbayar ionizationstatesforthemultipetawattlaserqedregime AT fengq ionizationstatesforthemultipetawattlaserqedregime AT vonderleyenmw ionizationstatesforthemultipetawattlaserqedregime AT paddockrw ionizationstatesforthemultipetawattlaserqedregime AT timmisr ionizationstatesforthemultipetawattlaserqedregime AT ticosc ionizationstatesforthemultipetawattlaserqedregime AT krushelnickkm ionizationstatesforthemultipetawattlaserqedregime AT norreyspa ionizationstatesforthemultipetawattlaserqedregime |