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On the possibility of reflection of Alfvén waves in a curvilinear magnetic field

  • Plasma Oscillations and Waves
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Abstract

The propagation of Alfvén waves in a plasma immersed in a curvilinear magnetic field is investigated by using a 2D model. The waves are described by a 1D equation that formally coincides with the equation for the case of a quasi-uniform straight magnetic field with a modified Alfvén velocity that takes into account the longitudinal dependence of the Lame coefficients. It is shown that toroidal and poloidal Alfvén modes depend differently on the magnetic-field geometry. In the case of a 2D plane-parallel configuration of the magnetic field, poloidal modes are efficiently reflected from regions where the magnetic field lines sharply converge or diverge. This effect can result in the formation of open-field-line Alfvén quasi-resonators.

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Authors and Affiliations

  1. Schmidt Institute of the Physics of the Earth, Russian Academy of Sciences, ul. Bol'shaya Gruzinskaya 10, Moscow, 123995, Russia

    N. G. Mazur, E. N. Fedorov & V. A. Pilipenko

Authors
  1. N. G. Mazur
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  2. E. N. Fedorov
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  3. V. A. Pilipenko
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__________

Translated from Fizika Plazmy, Vol. 30, No. 5, 2004, pp. 450–458.

Original Russian Text Copyright © 2004 by Mazur, Fedorov, Pilipenko.

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Mazur, N.G., Fedorov, E.N. & Pilipenko, V.A. On the possibility of reflection of Alfvén waves in a curvilinear magnetic field. Plasma Phys. Rep. 30, 413–421 (2004). https://doi.org/10.1134/1.1744950

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  • DOI: https://doi.org/10.1134/1.1744950

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