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Alpha particle heating in hot diamagnetic cavitiesObservational data from ISEE 1 are analyzed and a one-dimensional electromagnetic hybrid computer simulation is conducted for the heating of solar wind alpha particles in hot diamagnetic cavities (HDCs). In the simulation, which envisions alpha heating by ion-ion instabilities, low beam densities excite the proton/proton right-hand resonant instability that then pitch-angle scatters the beam without significantly heating the alphas. At greater beam densities, the proton/proton nonresonant instability undergoes saturation through a trapping of all three ion components. These results support the Thomsen et al. (1988) hypothesis that the nonresonant instability is the primary source of ion heating in hot diamagnetic cavities.
Document ID
19900057453
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Galvez, Miguel
(New Mexico, University Albuquerque, United States)
Fuselier, Stephen A.
(Lockheed Research Laboratories Palo Alto, CA, United States)
Gary, S. Peter
(New Mexico Univ. Albuquerque, NM, United States)
Thomsen, Michelle F.
(New Mexico Univ. Albuquerque, NM, United States)
Winske, Dan
(Los Alamos National Laboratory NM, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Solar Physics
Accession Number
90A44508
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-170001
CONTRACT_GRANT: NASA ORDER S-04039-D
CONTRACT_GRANT: NAS5-33047
CONTRACT_GRANT: NAS5-28710
Distribution Limits
Public
Copyright
Other

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