A fermi acceleration model to study the electron acceleration in laser-produced plasma with localized structures formation and turbulence generation

This investigation presents a model based on the nonlinear coupling of waves for studying electron acceleration in laser-produced plasma. The impact of the localized structures formation and turbulence generation on electron acceleration is investigated via a second-order Fermi acceleration mechanis...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2023-02, Vol.30 (2)
Main Authors: Singh, Indraj, Uma, R., Sharma, R. P.
Format: Article
Language:English
Subjects:
Electron acceleration
Finite difference method
Laser beams
Lasers
Mathematical models
Nonlinearity
Plasma physics
Turbulence
Wavelengths
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This investigation presents a model based on the nonlinear coupling of waves for studying electron acceleration in laser-produced plasma. The impact of the localized structures formation and turbulence generation on electron acceleration is investigated via a second-order Fermi acceleration mechanism. For this purpose, the dynamical coupled equations of the extraordinary mode laser and the upper hybrid wave are formulated by taking into account relativistic and ponderomotive nonlinearity. These coupled equations are solved by laboratory simulations using pseudo-spectral and finite difference methods. The simulation results show the turbulent wavenumber spectrum associated with the localization of the laser beam. The power-law scaling of turbulence generation has been utilized to study the formation of the thermal tail of energetic electrons, which may be responsible for the acceleration of the electrons. A fractional diffusion method has been exploited to determine electron acceleration. This study also provides a simplified model for a better understanding of the nonlinear progression of the laser beam during propagation inside the magnetized plasma.
ISSN:1070-664X
1089-7674
DOI:10.1063/5.0131281