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Wakefield generation in magnetized plasmas
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
2011 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 84, no 3, 36409- p.Article in journal (Refereed) Published
Abstract [en]

We consider wakefield generation in plasmas by electromagnetic pulses propagating perpendicular to a strong magnetic field, in the regime where the electron cyclotron frequency is equal to or larger than the plasma frequency. Particle-in-cell simulations reveal that for moderate magnetic field strengths previous results are reproduced, and the wakefield wave number spectrum has a clear peak at the inverse skin depth. However, when the cyclotron frequency is significantly larger than the plasma frequency, the wakefield spectrum becomes broadband, and simultaneously the loss rate of the driving pulse is much enhanced. A set of equations for the scalar and vector potentials reproducing these results are derived, using only the assumption of a weakly nonlinear interaction.

Place, publisher, year, edition, pages
2011. Vol. 84, no 3, 36409- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-49161DOI: 10.1103/PhysRevE.84.036409OAI: oai:DiVA.org:umu-49161DiVA: diva2:453134
Available from: 2011-11-01 Created: 2011-11-01 Last updated: 2017-12-08

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Publisher's full texthttp://pre.aps.org/abstract/PRE/v84/i3/e036409

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Holkundkar, AmolBrodin, GertMarklund, Mattias

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