Collisional charging of dust particles by suprathermal plasmas. II -- Regularized Kappa distributions

Autor:	Gaelzer, Rudi, Ziebell, Luiz Fernando
Rok vydání:	2024
Předmět:	Physics - Plasma Physics Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	We study the effects of the velocity distribution functions of the plasma particles on the equilibrium charge of dust grains, acquired through inelastic collisions of the particles with the grains. This paper is the second in a series of two papers on the subject. Here, we consider the charging process when the plasma particles are statistically described by the recently proposed regularized Kappa distribution functions, which allow for extreme suprathermal states, characterized by extremely low values of the kappa index, previously forbidden to the standard Kappa distributions, whose effects on dust charging were studied in Paper I of this series. We analyse the effects that extreme suprathermal states of the plasma particles have on dust charging and verify conditions for the uncommon result of positive equilibrium charge, employing two different models for the regularized Kappa distributions. Comment: Submitted for publication in Physics of Plasmas
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2411.05630 Zobrazit plný text záznamu View this record from Arxiv