Charging and heat collection by a positively charged dust grain in a plasma
Plasma Physics
2014-08-19 v1
Abstract
Dust particulates immersed in a quasineutral plasma can emit electrons in several important applications. Once electron emission becomes strong enough, the dust enters the positively charged regime where the conventional Orbital-Motion-Limited (OML) theory can break down due to potential well effects on trapped electrons. A minimal modification of the trapped-passing boundary approximation in the so-called OML approach is shown to accurately predict the dust charge and heat collection flux for a wide range of dust size and temperature.
Keywords
Cite
@article{arxiv.1408.3776,
title = {Charging and heat collection by a positively charged dust grain in a plasma},
author = {Gian Luca Delzanno and Xian-Zhu Tang},
journal= {arXiv preprint arXiv:1408.3776},
year = {2014}
}
Comments
5 pages, 4 figures. http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.035002. "Copyright (2014) by the American Physical Society."