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Title: Effective charge of a small absorbing body in highly collisional plasma subject to an external electric field

Abstract

The total force which is the resultant of the electric, ion, and electron drag forces has been calculated for a small absorbing spherical grain immersed in a highly collisional, weakly ionized plasma subject to a weak external electric field. Linear dielectric response formalism has been used and both ion and electron absorption on the grain have been taken into account. It is shown that the total force is always directed along the direction of the electric force. The 'effective' charge of the grain which can be defined as the ratio of the total force to the strength of the electric field is calculated. It is shown that its magnitude is comparable to the magnitude of the actual grain's charge.

Authors:
; ;  [1]
  1. Max-Planck Institut fuer Extraterrestrische Physik, D-85741 Garching (Germany)
Publication Date:
OSTI Identifier:
20976613
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 5; Other Information: DOI: 10.1063/1.2724806; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABSORPTION; COLLISIONAL PLASMA; COLLISIONS; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; DRAG; EFFECTIVE CHARGE; ELECTRIC FIELDS; ELECTRONS; IONS; SPHERICAL CONFIGURATION

Citation Formats

Chaudhuri, M., Khrapak, S. A., and Morfill, G. E. Effective charge of a small absorbing body in highly collisional plasma subject to an external electric field. United States: N. p., 2007. Web. doi:10.1063/1.2724806.
Chaudhuri, M., Khrapak, S. A., & Morfill, G. E. Effective charge of a small absorbing body in highly collisional plasma subject to an external electric field. United States. doi:10.1063/1.2724806.
Chaudhuri, M., Khrapak, S. A., and Morfill, G. E. Tue . "Effective charge of a small absorbing body in highly collisional plasma subject to an external electric field". United States. doi:10.1063/1.2724806.
@article{osti_20976613,
title = {Effective charge of a small absorbing body in highly collisional plasma subject to an external electric field},
author = {Chaudhuri, M. and Khrapak, S. A. and Morfill, G. E.},
abstractNote = {The total force which is the resultant of the electric, ion, and electron drag forces has been calculated for a small absorbing spherical grain immersed in a highly collisional, weakly ionized plasma subject to a weak external electric field. Linear dielectric response formalism has been used and both ion and electron absorption on the grain have been taken into account. It is shown that the total force is always directed along the direction of the electric force. The 'effective' charge of the grain which can be defined as the ratio of the total force to the strength of the electric field is calculated. It is shown that its magnitude is comparable to the magnitude of the actual grain's charge.},
doi = {10.1063/1.2724806},
journal = {Physics of Plasmas},
number = 5,
volume = 14,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}