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Title: On the propagation of vorticity in multi-species plasmas

The evolution of plasmas formed by several species is governed by one fluid equation for each species, all of them linked by an electromagnetic forcing and collisional terms, and the Maxwell equations. It is found that in the collisionless case, the field lines of a combination of fluid vorticity and magnetic field are transported by the flow as material points. In consequence, the vorticity propagates at the same velocity as the magnetic field. This is studied in depth for a number of simple configurations, showing that the vorticity travels at a certain fraction of the speed of light, depending on the size of the spatial mode.
Authors:
 [1]
  1. Department of Algebra and Mathematical Analysis and IMUVA, Universidad de Valladolid, 47005 Valladolid (Spain)
Publication Date:
OSTI Identifier:
22218318
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 12; Other Information: (c) 2013 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; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; MAXWELL EQUATIONS; PLASMA; PLASMA FLUID EQUATIONS; VELOCITY; VISIBLE RADIATION; VORTICES