Heavy ion acceleration in the divergent solar wind

We study the heavy ion acceleration due to cyclotron interaction with both right‐ and left‐hand polarized MHD waves propagating along the magnetic field in the outward direction in the divergent solar wind. It is shown in test‐particle approximation that heavy ions can overcome the gap between the m...

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Bibliographic Details
Published in:Geophysical research letters 2006-12, Vol.33 (23), p.n/a
Main Authors: Shevchenko, Valentin, Galinsky, Vitaly, Winske, Dan
Format: Article
Language:English
Subjects:
divergent solar wind
Earth sciences
Earth, ocean, space
Exact sciences and technology
ion differential speed
shell distribution
spectral gap
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Summary:We study the heavy ion acceleration due to cyclotron interaction with both right‐ and left‐hand polarized MHD waves propagating along the magnetic field in the outward direction in the divergent solar wind. It is shown in test‐particle approximation that heavy ions can overcome the gap between the maximum resonant velocity for left‐handed waves and minimum resonant velocity for right‐handed waves and acquire the average parallel velocity on the order of local Alfven speed relative to the protons.
ISSN:0094-8276
1944-8007
DOI:10.1029/2006GL026765