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Spin solitons in magnetized pair plasmas
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
2007 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 14, no 11, 2107-4 sidor p.Article in journal (Refereed) Published
Abstract [en]

A set of fluid equations, taking into account the spin properties of the electrons and positrons in a magnetoplasma, are derived. The magnetohydrodynamic limit of the pair plasma is investigated. It is shown that the microscopic spin properties of the electrons and positrons can lead to interesting macroscopic and collective effects in strongly magnetized plasmas. In particular, it is found that new Alfvénic solitary structures, governed by a modified Korteweg–de Vries equation, are allowed in such plasmas. These solitary structures vanish if the quantum spin effects are neglected. Our results should be of relevance for astrophysical plasmas, e.g., in pulsar magnetospheres, as well as for low-temperature laboratory plasmas.

Place, publisher, year, edition, pages
2007. Vol. 14, no 11, 2107-4 sidor p.
Keyword [en]
astrophysical plasma, Korteweg-de Vries equation, plasma magnetohydrodynamics, plasma solitons, positron collisions, spin systems, quantum electrodynamics, polarized plasmas, fileds, intense, physics, photon, pulsar
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-6893DOI: 10.1063/1.2793744OAI: oai:DiVA.org:umu-6893DiVA: diva2:146563
Available from: 2007-12-21 Created: 2007-12-21 Last updated: 2010-08-26Bibliographically approved

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Brodin, GertMarklund, Mattias

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