Kinetic equilibria of relativistic collisionless plasmas in the presence of nonstationary electromagnetic fields
Abstract
The kinetic description of relativistic plasmas in the presence of timevarying and spatially nonuniform electromagnetic (EM) fields is a fundamental theoretical issue both in astrophysics and plasma physics. This refers, in particular, to the treatment of collisionless and stronglymagnetized 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 spatiallysymmetric systems. These equilibria are shown to exist in the presence of nonuniform background EM fields and curved spacetime. In the nonrelativistic 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 timedependent 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:
 Faculty of Philosophy and Science, Institute of Physics, Silesian University in Opava, Bezručovo nám.13, CZ74601 Opava (Czech Republic)
 (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; SPACETIME; SYMMETRY; TIME DEPENDENCE
Citation Formats
Cremaschini, Claudio, Email: 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 nonstationary electromagnetic fields. United States: N. p., 2014.
Web. doi:10.1063/1.4868238.
Cremaschini, Claudio, Email: 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 nonstationary electromagnetic fields. United States. doi:10.1063/1.4868238.
Cremaschini, Claudio, Email: 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 nonstationary electromagnetic fields". United States.
doi:10.1063/1.4868238.
@article{osti_22251925,
title = {Kinetic equilibria of relativistic collisionless plasmas in the presence of nonstationary electromagnetic fields},
author = {Cremaschini, Claudio, Email: 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 timevarying and spatially nonuniform electromagnetic (EM) fields is a fundamental theoretical issue both in astrophysics and plasma physics. This refers, in particular, to the treatment of collisionless and stronglymagnetized 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 spatiallysymmetric systems. These equilibria are shown to exist in the presence of nonuniform background EM fields and curved spacetime. In the nonrelativistic 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 timedependent 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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