Physics
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.1501i&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, March 1, 1984, p. 1501-1507. Research sponsored by the U.S. Departmen
Physics
45
Alpha Particles, Helium, Hydrogen, Solar Protons, Solar Wind, International Sun Earth Explorer 1, Mach Number, Particle Acceleration
Scientific paper
The ratio of helium to proton differential intensities at a fixed energy per charge in the diffuse ion population during long-lived upstream particle events is compared with the simultaneously measured solar wind He/H ratio. It is found that the He/H intensity ratio at about 30 keV in upstream events is highly correlated with and on the average directly proportional to the He/H ratio in the solar wind, and larger than the He/H ratio in the solar wind by an average factor of 1.6. It is concluded that the solar wind is the parent population for the diffuse ions. The He abundance in the diffuse component is on average observed to be larger than in the solar wind. The observations are consistent with the predictions of Fermi acceleration models for a seed particle population drawn from the solar wind with little compositional bias and moderately enhanced in He during the acceleration process.
Gosling Jack T.
Ipavich Fred M.
Scholer Manfred
No associations
LandOfFree
Correlation between the He/H ratios in upstream particle events and in the solar wind does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Correlation between the He/H ratios in upstream particle events and in the solar wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlation between the He/H ratios in upstream particle events and in the solar wind will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1041655