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Damping Effects on Parametric Decays of Alfvén Waves

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Abstract

It is shown that damping effects can destabilize regions that are stable under non-dissipative fluid theory. Damping effects on the ion-acoustic modes are simulated by a collisional-like term in the longitudinal component of the fluid equations. It is shown that when there is only a beat wave instability, damping effects can destabilize modulational and decay-type instabilities. These results are in agreement with hybrid kinetic-fluid approaches and hybrid simulation codes.

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Authors and Affiliations

  1. Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile

    L. Gomberoff

  2. Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción, Concepción, Chile

    J.A. Araneda

Authors
  1. L. Gomberoff
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  2. J.A. Araneda
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Gomberoff, L., Araneda, J. Damping Effects on Parametric Decays of Alfvén Waves. Astrophysics and Space Science 277, 103–106 (2001). https://doi.org/10.1023/A:1012280010934

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  • DOI: https://doi.org/10.1023/A:1012280010934

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