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Title: Energy Loss of Test Charges in a Dusty Plasma in the Presence of Dynamical Grain Charging

Abstract

The dynamical charging of dust grains is an important process and is found to enhance the shielding of a test charge passing through a multi-component dusty plasma. In the present work, the energy loss of a test charge projectile passing through a dusty plasma in the presence of dynamical grain charging is studied. The electric forces can be written in terms of the Maxwell stress tensor for a sphere around the test charge. For sphere with radius tending to zero the force is just that on the test charge. For a finite radius, forces on the plasma are also included which makes it possible to see how the force on the test charge is balanced by the force on the plasma. The method fails for the zero radius but the drag force can be found from a simple physical model. The general analytical results are presented and are compared with the previous results.

Authors:
;  [1]
  1. Alfven Laboratory, Division of Plasma Physics, Royal Institute of Technology, SE-100 44, Stockholm (Sweden)
Publication Date:
OSTI Identifier:
20726824
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 799; Journal Issue: 1; Conference: 4. international conference on the physics of dusty plasmas, Orleans (France), 13-17 Jun 2005; Other Information: DOI: 10.1063/1.2134672; (c) 2005 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; DUSTS; ELECTRIC CHARGES; ELECTRON COLLISIONS; ION COLLISIONS; PARTICLES; PLASMA; SPHERES; STRESSES; TENSORS

Citation Formats

Shafiq, Muhammad, and Raadu, Michael A. Energy Loss of Test Charges in a Dusty Plasma in the Presence of Dynamical Grain Charging. United States: N. p., 2005. Web. doi:10.1063/1.2134672.
Shafiq, Muhammad, & Raadu, Michael A. Energy Loss of Test Charges in a Dusty Plasma in the Presence of Dynamical Grain Charging. United States. doi:10.1063/1.2134672.
Shafiq, Muhammad, and Raadu, Michael A. Mon . "Energy Loss of Test Charges in a Dusty Plasma in the Presence of Dynamical Grain Charging". United States. doi:10.1063/1.2134672.
@article{osti_20726824,
title = {Energy Loss of Test Charges in a Dusty Plasma in the Presence of Dynamical Grain Charging},
author = {Shafiq, Muhammad and Raadu, Michael A.},
abstractNote = {The dynamical charging of dust grains is an important process and is found to enhance the shielding of a test charge passing through a multi-component dusty plasma. In the present work, the energy loss of a test charge projectile passing through a dusty plasma in the presence of dynamical grain charging is studied. The electric forces can be written in terms of the Maxwell stress tensor for a sphere around the test charge. For sphere with radius tending to zero the force is just that on the test charge. For a finite radius, forces on the plasma are also included which makes it possible to see how the force on the test charge is balanced by the force on the plasma. The method fails for the zero radius but the drag force can be found from a simple physical model. The general analytical results are presented and are compared with the previous results.},
doi = {10.1063/1.2134672},
journal = {AIP Conference Proceedings},
number = 1,
volume = 799,
place = {United States},
year = {Mon Oct 31 00:00:00 EST 2005},
month = {Mon Oct 31 00:00:00 EST 2005}
}