Heating of Ions by Alfvén Waves via Nonresonant Interactions

Details Heating of Ions by Alfvén Waves via Nonresonant Interactions Heating of Ions by Alfvén Waves via Nonresonant Interactions

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006phrvl..96l5001w&link_type=abstract

Physical Review Letters, vol. 96, Issue 12, id. 125001

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27

Plasma Production And Heating, Nonlinear Phenomena: Waves, Wave Propagation, And Other Interactions, Solar Wind Plasma, Sources Of Solar Wind

Scientific paper

Finite-amplitude intrinsic Alfvén waves exist pervasively in astrophysical and solar-terrestrial environment. It is generally believed that linear wave-particle resonant interaction between thermal protons and Alfvén waves is ineffective when the proton beta is low. However, this Letter demonstrates that the ions can be heated by Alfvén waves via nonresonant nonlinear interaction. Contrary to the customary expectation, it is found that the lower the plasma beta value, the more effective is the heating process. It is also shown that the ion temperature increase is more prominent along perpendicular direction.

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