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Title: Current sheets with inhomogeneous plasma temperature: Effects of polarization electric field and 2D solutions

We develop current sheet models which allow to regulate the level of plasma temperature and density inhomogeneities across the sheet. These models generalize the classical Harris model via including two current-carrying plasma populations with different temperature and the background plasma not contributing to the current density. The parameters of these plasma populations allow regulating contributions of plasma density and temperature to the pressure balance. A brief comparison with spacecraft observations demonstrates the model applicability for describing the Earth magnetotail current sheet. We also develop a two dimensional (2D) generalization of the proposed model. The interesting effect found for 2D models is the nonmonotonous profile (along the current sheet) of the magnetic field component perpendicular to the current sheet. Possible applications of the model are discussed.
Authors:
;  [1] ; ;  [2]
  1. Dipartimento di Fisica, Università della Calabria, Rende, Cosenza (Italy)
  2. Space Research Institute, RAS, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22493753
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CURRENT DENSITY; EARTH PLANET; ELECTRIC FIELDS; ELECTRON TEMPERATURE; INHOMOGENEOUS PLASMA; ION TEMPERATURE; MAGNETIC FIELDS; MAGNETOTAIL; MATHEMATICAL SOLUTIONS; PLASMA DENSITY; SPACE VEHICLES; TWO-DIMENSIONAL CALCULATIONS