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Post-solitons and electron vortices generated by femtosecond intense laser interacting with uniform near-critical-density plasmas

Authors :
Dong-Ning Yue
Min Chen
Yao Zhao
Pan-Fei Geng
Xiao-Hui Yuan
Quan-Li Dong
Zheng-Ming Sheng
Jie Zhang
Source :
Chinese Physics B. 31:045205
Publication Year :
2022
Publisher :
IOP Publishing, 2022.

Abstract

Generation of nonlinear structures, such as stimulated Raman side scattering waves, post-solitons and electron vortices, during ultra-short intense laser pulse transportation in near-critical-density (NCD) plasmas is studied by using multi-dimensional particle-in-cell (PIC) simulations. In two-dimensional geometries, both P- and S-polarized laser pulses are used to drive these nonlinear structures and to check the polarization effects on them. In the S-polarized case, the scattered waves can be captured by surrounding plasmas leading to the generation of post-solitons, while the main pulse excites convective electric currents leading to the formation of electron vortices through Kelvin–Helmholtz instability (KHI). In the P-polarized case, the scattered waves dissipate their energy by heating surrounding plasmas. Electron vortices are excited due to the hosing instability of the drive laser. These polarization dependent physical processes are reproduced in two different planes perpendicular to the laser propagation direction in three-dimensional simulation with linearly polarized laser driver. The current work provides inspiration for future experiments of laser–NCD plasma interactions.

Subjects

Subjects :
General Physics and Astronomy

Details

ISSN :
16741056
Volume :
31
Database :
OpenAIRE
Journal :
Chinese Physics B
Accession number :
edsair.doi...........e45540cd4efee8d925f9c9b6e748e496