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Moments of the anisotropic regularized $\kappa$-distributions

Computational Physics 2019-08-07 v2

Abstract

For collisionless (or collision-poor) plasma populations which are well described by the κ\kappa-distribution functions (also known as the Kappa or Lorentzian power-laws) a macroscopic interpretation has remained largely questionable, especially because of the diverging moments of these distributions. Recently significant progress has been made by introducing a generic regularization for the isotropic κ\kappa-distribution, which resolves this critical limitation. Regularization is here applied to the anisotropic forms of κ\kappa-distributions, commonly used to describe temperature anisotropies, and skewed or drifting distributions of beam-plasma systems. These regularized distributions admit non-diverging moments which are provided for all positive κ\kappa, opening promising perspectives for a macroscopic (fluid-like) characterization of non-ideal plasmas.

Keywords

Cite

@article{arxiv.1906.01406,
  title  = {Moments of the anisotropic regularized $\kappa$-distributions},
  author = {Klaus Scherer and Marian Lazar and Edin Husidic and Horst Fichtner},
  journal= {arXiv preprint arXiv:1906.01406},
  year   = {2019}
}

Comments

24 pages, 3 Figures