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Published December 1, 1985 | Version Published
Journal Article Open

Solar Coronal and Photospheric Abundances from Solar Energetic Particle Measurements

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Abstract

We find that the ionic charge-to-mass ratio (Q/M) is the principal organizing parameter for the fractionation of solar energetic particles (SEPs) by acceleration and propagation processes and for flare-to-flare variability. Unfractionated coronal abundances for 20 elements with 6 ≤ Z ≤ 30 are derived by applying a single-parameter Q/M-dependent correction to the average SEP abundances, and unfractionated photospheric abundances are obtained by applying an additional correction based on first ionization potential.

Additional Information

© 1985 American Astronomical Society. Provided by the NASA Astrophysics Data System. We appreciate the contributions of R. E. Vogt and other CRS team members. This work has been supported in part by NASA under contract NAS7-918 and grant NGR 05-002-160.

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Eprint ID
45311
Resolver ID
CaltechAUTHORS:20140429-131342703

Related works

Describes
http://adsabs.harvard.edu/doi/10.1086/184580 (URL)

Funding

NASA
NAS7-918
NASA
NGR 05-002-160

Dates

Created
2014-04-30
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Updated
2021-11-10
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Caltech groups
Space Radiation Laboratory
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Space Radiation Laboratory
Other Numbering System Identifier
1985-23