https://doi.org/10.1140/epjp/s13360-023-04240-6
Regular Article
Simulation to study the turbulent amplification of magnetic field relevant to laboratory and astrophysical plasmas
Plasma Simulation Laboratory, Department of Energy Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, 110016, New Delhi, Delhi, India
Received:
22
February
2023
Accepted:
27
June
2023
Published online:
6
July
2023
The paper investigates the effect of density perturbations on the nonlinear development of the kinetic Alfven wave (KAW) and turbulence generation within the laser-produced plasma. In this perspective, the dynamical equation of pump KAW is developed, including the nonlinear ponderomotive force and additional density perturbation profiles in the background, and solved by laboratory simulation. It is anticipated that additional density perturbation profiles cause counter-beam propagation, which impacts the background density, amplification of the magnetic field, and turbulence generation as a result. The findings of laboratory simulations and the simplified model reveal the impact of the additional density perturbation profiles on the nonlinear growth of the wave and amplification factor of the magnetic field. The simulation findings have also shown the influence of density variations on the turbulent power spectrum. The turbulent spectra in the small wavenumber region resemble the spectra observed by XMM-Newton and CHANDRA in the core regions of coma clusters. For the large wavenumber region, the turbulent power-law scaling is quite close to the Golitsyn turbulent scaling. Such studies of the nonlinear interaction may be essential in rendering the turbulence generation and magnetic field enlargement caused by the jets and merger events in the central galaxies.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
