The Isotopic Composition of Cosmic-Ray Calcium

Details The Isotopic Composition of Cosmic-Ray Calcium The Isotopic Composition of Cosmic-Ray Calcium

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....5.1679w&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

1

Scientific paper

The isotopic composition of galactic cosmic-ray Ca has been measured over the energy range ˜ 150 to 400 MeV/nuc on the Advanced Composition Explorer (ACE) mission. Using the measured abundances of the dominantly-secondary Ca isotopes with A = 41-46 as constraints, in combination with measured cross sections for the production of Ca isotopes by fragmentation of 56 Fe on hydrogen, we show that the two doubly-magic isotopes 40 Ca and 48 Ca consist mainly of primary material. We find that their relative abundances in the cosmic-ray source are very similar to those found in solar-system material, in spite of the fact that different types of stars are thought to be responsible for producing these two isotopes. This observation is consistent with the view that cosmic rays are derived from a mixed sample of interstellar matter.

Affiliated with

Also associated with

No associations

Rating

The Isotopic Composition of Cosmic-Ray Calcium 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 The Isotopic Composition of Cosmic-Ray Calcium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Isotopic Composition of Cosmic-Ray Calcium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-793857