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Title: Electric Field in a Double Layer and the Imparted Momentum

Abstract

It is shown that the net momentum delivered by the large electric field inside a one-dimensional double layer is zero. This is demonstrated through an analysis of the momentum balance in the double layer at the boundary between the ionosphere and the aurora cavity. For the recently observed double layer in a current-free plasma expanding along a divergent magnetic field, an analysis of the evolution of the radially averaged variables shows that the increase of plasma thrust results from the magnetic-field pressure balancing the plasma pressure in the direction of acceleration, rather than from electrostatic pressure.

Authors:
 [1]
  1. Holon Academic Institute of Technology, 52 Golomb Street, Holon 58102 (Israel)
Publication Date:
OSTI Identifier:
20777027
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevLett.96.065002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; ELECTRIC FIELDS; EVOLUTION; IONOSPHERE; LAYERS; MAGNETIC FIELDS; ONE-DIMENSIONAL CALCULATIONS; PLASMA; PLASMA PRESSURE

Citation Formats

Fruchtman, A. Electric Field in a Double Layer and the Imparted Momentum. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.065002.
Fruchtman, A. Electric Field in a Double Layer and the Imparted Momentum. United States. doi:10.1103/PhysRevLett.96.065002.
Fruchtman, A. Fri . "Electric Field in a Double Layer and the Imparted Momentum". United States. doi:10.1103/PhysRevLett.96.065002.
@article{osti_20777027,
title = {Electric Field in a Double Layer and the Imparted Momentum},
author = {Fruchtman, A.},
abstractNote = {It is shown that the net momentum delivered by the large electric field inside a one-dimensional double layer is zero. This is demonstrated through an analysis of the momentum balance in the double layer at the boundary between the ionosphere and the aurora cavity. For the recently observed double layer in a current-free plasma expanding along a divergent magnetic field, an analysis of the evolution of the radially averaged variables shows that the increase of plasma thrust results from the magnetic-field pressure balancing the plasma pressure in the direction of acceleration, rather than from electrostatic pressure.},
doi = {10.1103/PhysRevLett.96.065002},
journal = {Physical Review Letters},
number = 6,
volume = 96,
place = {United States},
year = {Fri Feb 17 00:00:00 EST 2006},
month = {Fri Feb 17 00:00:00 EST 2006}
}