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Oblique electromagnetic instabilities for a hot relativistic beam interacting with a hot and magnetized plasma
ETSI Ind. Univ Castilla La Mancha, Spain.
Ruhr-University Bochum.ORCID iD: 0000-0003-4055-0552
Phys Gaz Plasmas Lab CNRS-Orsay, France.
2006 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 13, no 8, 082109-1-082109-8 p.Article in journal (Refereed) Published
Abstract [en]

The temperature-dependent fluid model from Phys. Plasmas 13, 042106 (2006) is expanded in order to explore the oblique electromagnetic instabilities, which are driven by a hot relativistic electron beam that is interpenetrating a hot and magnetized plasma. The beam velocity vector is parallel to the magnetic-field direction. The results are restricted to nonrelativistic temperatures. The growth rates of all instabilities but the two-stream instability can be reduced by a strong magnetic field so that the distribution of unstable waves becomes almost one dimensional. For high beam densities, highly unstable oblique modes dominate the spectrum of unstable waves as long as omega(c)/omega(p)less than or similar to 2 gamma(3/2)(b), where omega(c) is the electron gyrofrequency, omega(p) is the electron plasma frequency, and gamma(b) is the relativistic factor of the beam. A uniform stabilization over the entire k space cannot be achieved.

Place, publisher, year, edition, pages
2006. Vol. 13, no 8, 082109-1-082109-8 p.
Keyword [en]
plasma physics
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-35706DOI: 10.1063/1.2335414Local ID: 28205OAI: oai:DiVA.org:liu-35706DiVA: diva2:256554
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-11-03

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Dieckmann, Mark E

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