Weibel instability beyond bi-Maxwellian anisotropy

T. Silva, B. Afeyan, and L. O. Silva
Phys. Rev. E 104, 035201 – Published 7 September 2021
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Abstract

The shape of the anisotropic velocity distribution function, beyond the realm of strict Maxwellians can play a significant role in determining the evolution of the Weibel instability dictating the dynamics of self-generated magnetic fields. For non-Maxwellian distribution functions, we show that the direction of the maximum growth rate wave vector changes with shape. We investigate different laser-plasma interaction model distributions which show that their Weibel generated magnetic fields may require closer scrutiny beyond the second moment (temperature) anisotropy ratio characterization.

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  • Received 19 February 2021
  • Accepted 20 August 2021

DOI:https://doi.org/10.1103/PhysRevE.104.035201

©2021 American Physical Society

Physics Subject Headings (PhySH)

Plasma Physics

Authors & Affiliations

T. Silva1,*, B. Afeyan2,†, and L. O. Silva1,‡

  • 1GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
  • 2Polymath Research, Inc., 94566 Pleasanton, California, USA

  • *thales.silva@tecnico.ulisboa.pt
  • bafeyan@gmail.com
  • luis.silva@tecnico.ulisboa.pt

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Issue

Vol. 104, Iss. 3 — September 2021

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