Nuclear interactions of high energy heavy ions and applications in astrophysics

Details Nuclear interactions of high energy heavy ions and applications in astrophysics Nuclear interactions of high energy heavy ions and applications in astrophysics

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nihe.rept.....w&link_type=abstract

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Astronomy and Astrophysics

Astrophysics

Astrophysics, Cyclic Accelerators, Heavy Ions, Nucleon-Nucleon Interactions, Argon Isotopes, Oxygen Isotopes, Silicon Isotopes, Sulfur Isotopes

Scientific paper

This program was established for the purpose of studying projectile fragmentation: (1) as a function of energy, focusing first on the intermediate energy region, less than 1 GeV/nucleon, where there have been few previous measurements and no systematic studies, and (2) as a function of projectile mass, starting with light beams and proceeding to species as heavy as nickel (and possibly beyond). The intermediate energy region is important as the transition between the lower energy data, where the interaction appears to be dominated by collective effects and the decay of excited nuclei, and the highest energy results, where nucleon-nucleon interactions are fundamental, 'limiting fragmentation' applies, and the nucleus may well break-up before any de-excitation. The mass dependence of projectile fragmentation is largely unknown since most detailed work has involved light ion beams. Nuclear structure effects, for example, may well be quite prominent for heavier beams. Furthermore, the nuclear excitation functions for the production of different fragment isotopes have immediate application to the astrophysical interpretation of existing isotopic datasets obtained from balloon and satellite measurements of galactic cosmic rays.

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