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Title: Kinetic equilibria of relativistic collisionless plasmas in the presence of non-stationary electromagnetic fields

Abstract

The kinetic description of relativistic plasmas in the presence of time-varying and spatially non-uniform electromagnetic (EM) fields is a fundamental theoretical issue both in astrophysics and plasma physics. This refers, in particular, to the treatment of collisionless and strongly-magnetized plasmas in the presence of intense radiation sources. In this paper, the problem is investigated in the framework of a covariant gyrokinetic treatment for Vlasov–Maxwell equilibria. The existence of a new class of kinetic equilibria is pointed out, which occur for spatially-symmetric systems. These equilibria are shown to exist in the presence of non-uniform background EM fields and curved space-time. In the non-relativistic limit, this feature permits the determination of kinetic equilibria even for plasmas in which particle energy is not conserved due to the occurrence of explicitly time-dependent EM fields. Finally, absolute stability criteria are established which apply in the case of infinitesimal symmetric perturbations that can be either externally or internally produced.

Authors:
;  [1];  [1];  [2]
  1. Faculty of Philosophy and Science, Institute of Physics, Silesian University in Opava, Bezručovo nám.13, CZ-74601 Opava (Czech Republic)
  2. (Italy)
Publication Date:
OSTI Identifier:
22251925
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COLLISIONLESS PLASMA; ELECTROMAGNETIC FIELDS; EQUILIBRIUM; PERTURBATION THEORY; RADIATION SOURCES; RELATIVISTIC PLASMA; RELATIVISTIC RANGE; SPACE-TIME; SYMMETRY; TIME DEPENDENCE

Citation Formats

Cremaschini, Claudio, E-mail: claudiocremaschini@gmail.com, Stuchlík, Zdeněk, Tessarotto, Massimo, and Department of Mathematics and Geosciences, University of Trieste, Via Valerio 12, 34127 Trieste. Kinetic equilibria of relativistic collisionless plasmas in the presence of non-stationary electromagnetic fields. United States: N. p., 2014. Web. doi:10.1063/1.4868238.
Cremaschini, Claudio, E-mail: claudiocremaschini@gmail.com, Stuchlík, Zdeněk, Tessarotto, Massimo, & Department of Mathematics and Geosciences, University of Trieste, Via Valerio 12, 34127 Trieste. Kinetic equilibria of relativistic collisionless plasmas in the presence of non-stationary electromagnetic fields. United States. doi:10.1063/1.4868238.
Cremaschini, Claudio, E-mail: claudiocremaschini@gmail.com, Stuchlík, Zdeněk, Tessarotto, Massimo, and Department of Mathematics and Geosciences, University of Trieste, Via Valerio 12, 34127 Trieste. Sat . "Kinetic equilibria of relativistic collisionless plasmas in the presence of non-stationary electromagnetic fields". United States. doi:10.1063/1.4868238.
@article{osti_22251925,
title = {Kinetic equilibria of relativistic collisionless plasmas in the presence of non-stationary electromagnetic fields},
author = {Cremaschini, Claudio, E-mail: claudiocremaschini@gmail.com and Stuchlík, Zdeněk and Tessarotto, Massimo and Department of Mathematics and Geosciences, University of Trieste, Via Valerio 12, 34127 Trieste},
abstractNote = {The kinetic description of relativistic plasmas in the presence of time-varying and spatially non-uniform electromagnetic (EM) fields is a fundamental theoretical issue both in astrophysics and plasma physics. This refers, in particular, to the treatment of collisionless and strongly-magnetized plasmas in the presence of intense radiation sources. In this paper, the problem is investigated in the framework of a covariant gyrokinetic treatment for Vlasov–Maxwell equilibria. The existence of a new class of kinetic equilibria is pointed out, which occur for spatially-symmetric systems. These equilibria are shown to exist in the presence of non-uniform background EM fields and curved space-time. In the non-relativistic limit, this feature permits the determination of kinetic equilibria even for plasmas in which particle energy is not conserved due to the occurrence of explicitly time-dependent EM fields. Finally, absolute stability criteria are established which apply in the case of infinitesimal symmetric perturbations that can be either externally or internally produced.},
doi = {10.1063/1.4868238},
journal = {Physics of Plasmas},
number = 3,
volume = 21,
place = {United States},
year = {Sat Mar 15 00:00:00 EDT 2014},
month = {Sat Mar 15 00:00:00 EDT 2014}
}
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