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Ionization states of heavy elements observed in the 1974 May 14-15 anomalous solar particle eventThe charge states of heavy ions accelerated in the (He-3)-Fe-rich solar particle event of May 14-15, 1974 have been determined by the use of using data from the University of Maryland/Max-Planck-Institut experiment on IMP 8. In addition to Fe(+11,12), it is found that both O(+5) and Fe(+16,17,18) are also present, suggesting variations in coronal temperatures over a range from approximately 400,000 to 5,000,000 K. The presence of O(+5) and Fe(+16-18) may be explained by a resonant plasma heating mechanism proposed by Fisk (1978) to account for the enhancements of He-3 and Fe.
Document ID
19810048337
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ma Sung, L. S.
(Maryland Univ. College Park, MD, United States)
Gloeckler, G.
(Maryland, University College Park, Md., United States)
Fan, C. Y.
(Arizona, University Tucson, Ariz., United States)
Hovestadt, D.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Date Acquired
August 11, 2013
Publication Date
April 1, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
Solar Physics
Accession Number
81A32741
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-224
CONTRACT_GRANT: NAS5-11063
Distribution Limits
Public
Copyright
Other

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