Emission of nearly stripped carbon and oxygen from the sun

Details Emission of nearly stripped carbon and oxygen from the sun Emission of nearly stripped carbon and oxygen from the sun

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7623135s&link_type=abstract

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Physics

Nuclear Physics

Carbon, Nuclei (Nuclear Physics), Oxygen, Solar Radiation, Adiabatic Conditions, Cosmic Rays, Energy Spectra, Solar Corona, Solar Flares, Solar Instruments, Solar Physics

Scientific paper

Energy spectra of nearly stripped carbon and oxygen nuclei were observed during several solar particle events indicating a systematic deviation of these spectra from a simple power law. The spectra bend below 100 keV per nucleon and the degree of turn-over are highly correlated with the size of the flare, as measured by the event averaged flux of 130 to 220 keV protons. The energy spectra of helium computed for the same time periods do not show a similar feature. A large variability of the alpha/CNO ratio from event to event (from 2 to about 20 at 40 keV per nucleon) is found, and, in all cases examined, the carbon and oxygen nuclei are nearly fully stripped. These results are interpreted as evidence for storage of energetic ions in hot (Te is approximatey 1.5 million K) coronal regions, followed by strong adiabatic deceleration.

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