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Nonlinear propagation of coherent electromagnetic waves in a dense magnetized plasma
Ruhr University of Bochum, Germany Ruhr University of Bochum, Germany University of Calif San Diego, CA 92093 USA University of Calif San Diego, CA 92093 USA .
Ruhr University of Bochum, Germany Ruhr University of Bochum, Germany .
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
2012 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 19, no 7, 072302- p.Article in journal (Refereed) Published
Abstract [en]

We present an investigation of the nonlinear propagation of high-frequency coherent electromagnetic waves in a uniform quantum magnetoplasma. Specifically, we consider nonlinear couplings of right-hand circularly polarized electromagnetic-electron-cyclotron (CPEM-EC) waves with dispersive shear Alfven (DSA) and dispersive compressional Alfven (DCA) perturbations in plasmas composed of degenerate electron fluids and non-degenerate ion fluids. Such interactions lead to amplitude modulation of the CPEM-EC wave packets, the dynamics of which is governed by a three-dimensional nonlinear Schrodinger equation (NLSE) with the frequency shift arising from the relativistic electron mass increase in the CPEM-EC fields and density perturbations associated with the DSA and DCA perturbations. Accounting for the electromagnetic and quantum forces, we derive the evolution equation for the DSA and DCA waves in the presence of the magnetic field-aligned ponderomotive force of the CPEM-EC waves. The NLSE and the driven DSA and DCA equations are then used to investigate the modulational instability. The relevance of our investigation to laser-plasma interaction experiments and the cores of white dwarf stars is pointed out.

Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 2012. Vol. 19, no 7, 072302- p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-82077DOI: 10.1063/1.4731733ISI: 000307422800029OAI: oai:DiVA.org:liu-82077DiVA: diva2:557690
Note

Funding Agencies|Deutsche Forschungsgemeinschaft through Research Unit 1048|SH21/3-2|

Available from: 2012-09-28 Created: 2012-09-28 Last updated: 2017-12-07

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