GCR neon isotopic abundances: Comparison with wolf-rayet star models and meteoritic abundances

Details GCR neon isotopic abundances: Comparison with wolf-rayet star models and meteoritic abundances GCR neon isotopic abundances: Comparison with wolf-rayet star models and meteoritic abundances

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..598..257b&link_type=abstract

SOLAR AND GALACTIC COMPOSITION: A Joint SOHO/ACE Workshop. AIP Conference Proceedings, Volume 598, pp. 257-262 (2001).

Other

10

Cosmic Rays, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Emission-Line Stars

Scientific paper

Measurements of the neon isotopic abundances from the ACE-CRIS experiment are presented. These abundances have been obtained in seven energy intervals over the energy range of ~80<=E<=280 MeV/nucleon. The 22Ne/20Ne source ratio is derived using the measured 21Ne/20Ne abundance as a ``tracer'' of secondary production of the neon isotopes. We find that the 22Ne/20Ne abundance ratio at the cosmic-ray source is a factor of 5.0+/-0.2 greater than in the solar wind. The GCR 22Ne/20Ne ratio is also shown to be considerably larger than that found in anomalous cosmic rays, solar energetic particles, most meteoritic samples of matter, and interplanetary dust particles. Recent two-component Wolf-Rayet models provide predictions for the 22Ne/20Ne ratio and other isotope ratios. Comparison of the CRIS neon, iron, and nickel isotopic source abundance ratios with predictions indicate possible enhanced abundances of some neutron-rich nuclides that are expected to accompany the 22Ne excess. .

Affiliated with

Also associated with

No associations

Rating

GCR neon isotopic abundances: Comparison with wolf-rayet star models and meteoritic abundances 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 GCR neon isotopic abundances: Comparison with wolf-rayet star models and meteoritic abundances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GCR neon isotopic abundances: Comparison with wolf-rayet star models and meteoritic abundances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1234224