Alfvén turbulence in collisionless plasmas

Details Alfvén turbulence in collisionless plasmas Alfvén turbulence in collisionless plasmas

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007p%26ss...55.2281l&link_type=abstract

Planetary and Space Science, Volume 55, Issue 15, p. 2281-2285.

Computer Science

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Scientific paper

The evolution of Alfvén turbulence due to three-wave interactions is discussed using kinetic theory for a collisionless, thermal plasma. In particular, we consider decay of Alfvén waves through three-wave coupling with an ion sound mode in the random-phase approximation. Two decay processes are of particular interest: an Alfvén wave decays into a backward propagating Alfvén wave and a forward propagating ion sound wave, and an Alfvén wave decays into a backward propagating fast magnetoacoustic wave and a forward ion sound wave. The former was widely discussed in the literature, particularly under the coherent wave assumption. The latter was not well explored and is discussed here.

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