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Direct Observations of the Charge States of Low Energy Solar ParticlesThe charge states of carbon and oxygen of solar origin were measured directly in interplanetary space. At 100 keV per nucleon the C(+5)/C(+6) and O(+7)/O(+8) ratios are 1.8 and 1.6 respectively. It was found that the abundance ratios of low energy heavy nuclei to He is significantly larger than corresponding photospheric values: the enhancement of O/He is 35 and both Si/He and Fe/He are overabundant by a factor of 100. To explain these observations a mechanism is proposed which first preferentially accelerates heavy ions and is followed by either storage of these ions in the coronal regions or strong adiabatic deceleration.
Document ID
19730023915
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gloeckler, G.
(Maryland Univ. College Park, MD, United States)
Fan, C. Y.
(Ariz. Univ. Tucson, United States)
Hovestadt, D.
(Max-Planck Inst. fuer Extraterrestrische Phys.)
Date Acquired
August 7, 2013
Publication Date
August 1, 1973
Publication Information
Publication: Univ. of Md. Contrib. to the 13th Intern. Cosmic Ray Conf.
Subject Category
Space Radiation
Report/Patent Number
TR-73-132
Accession Number
73N32648
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-224
CONTRACT_GRANT: NAS5-11063
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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