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Direct observations of the charge states of low energy solar particlesThe charge states of carbon and oxygen of solar origin have been 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. Abundance ratios of low energy heavy nuclei to He are found which are significantly larger than the 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
19740047520
Document Type
Conference Proceedings
Authors
Gloeckler, G. (Maryland, University College Park, Md., United States)
Fan, C. Y. (Arizona, University Tucson, Ariz., United States)
Hovestadt, D. (Max-Planck-Institut fuer extraterrestrische Physik Garching, Germany)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Subject Category
SPACE RADIATION
Meeting Information
International Cosmic Ray Conference(Denver, CO)
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-224
CONTRACT_GRANT: NAS5-11063
Distribution Limits
Public
Copyright
Other