2019/06/30 by Klaus Scherer, Marian Lazar, Edin Husidic +1 · 1 citation
Physics and Astronomy · #physics.comp-ph
paper · pdf · doi:10.3847/1538-4357/ab1ea1
24 pages, 3 Figures
arxiv created 2019/07/10 · arxiv updated 2019/08/07
For collisionless (or collision-poor) plasma populations which are well described by the κ-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-distribution, which resolves this critical limitation. Regularization is here applied to the anisotropic forms of κ-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, opening promising perspectives for a macroscopic (fluid-like) characterization of non-ideal plasmas.