NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Nuclear composition of solar cosmic raysExperimental observations of the elemental and isotopic composition of solar flare particles are discussed. Sources and characteristics of particle-emitting solar flare events are reviewed, and techniques for separating particle species are briefly described. Data are presented for the elemental composition of the solar atmosphere, and the possibility of determining the solar helium abundance from solar cosmic-ray observations is explored. The main experimental determinations of heavy element abundances at energies greater and less than 10 MeV/nucleon are summarized, and techniques for measuring the ionic charge composition of solar cosmic rays are outlined. Models explaining heavy element enhancements are described along with processes leading to gamma-ray emission during solar flare events. Observations of the rare isotopes of hydrogen and helium during solar flare events are noted, and a lower atmospheric limit is derived for nuclear reactions leading to positron decay. The possibility of investigating low-energy solar cosmic rays by measuring the relative abundances of different elements is evaluated.
Document ID
19750043930
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hovestadt, D.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Date Acquired
August 8, 2013
Publication Date
January 1, 1974
Subject Category
Solar Physics
Meeting Information
Meeting: Solar wind three; Third Conference
Location: Pacific Grove, CA
Start Date: March 25, 1974
End Date: March 29, 1974
Accession Number
75A28002
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-224
CONTRACT_GRANT: NAS5-11063
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available