On the electromagnetic-electron rings originating from the interaction of high-power short-pulse laser and underdense plasma

0551381 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Valenta, Petr - Grittani, Gabriele Maria - Lazzarini, Carlo Maria - Klimo, Ondřej - Bulanov, Sergey V.
On the electromagnetic-electron rings originating from the interaction of high-power short-pulse laser and underdense plasma.
Physics of Plasmas. Roč. 28, č. 12 (2021), č. článku 122104. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA MŠMT EF15_003/0000449
Grant ostatní: OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Výzkumná infrastruktura: ELI Beamlines III - 90141
Institucionální podpora: RVO:68378271
Klíčová slova: plasma interaction * laser-wakefield acceleration * self-focusing * particle-in-cell simulation
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 2.357, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1063/5.0065167

We investigate the evolution of radial profile of a high-power short-pulse laser interacting with underdense plasma, and in particular, we con centrate on the transverse electromagnetic rings, which are formed due to the laser radiation defocusing induced by the excitation of Langmuir waves. We illustrate the physical processes involved in the formation of such structures analytically and use the three-dimensional numerical simulations to reveal the relationships among the electromagnetic ring properties and the parameters of laser and plasma. Within the studied parameter range, we find that up to 70 % of the total initial driver pulse energy can be carried off by the electromagnetic rings having the opening angles 45–115 mrad. Furthermore, we show that the electromagnetic rings can become a source of high-energy ring shaped electron beams.

Trvalý link: http://hdl.handle.net/11104/0326797