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 - Journal Article
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
R&D Projects: GA MŠMT EF15_003/0000449
Grant - others:OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Research Infrastructure: ELI Beamlines III - 90141
Institutional support: RVO:68378271
Keywords : plasma interaction * laser-wakefield acceleration * self-focusing * particle-in-cell simulation
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.357, year: 2021
Method of publishing: Limited access
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.

Permanent Link: http://hdl.handle.net/11104/0326797