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An abrasion-ablation model description of galactic heavy-ion fragmentation

Author
Wilson, J. W.
Published
Apr 1, 1984.
Physical Description
1 electronic document
Additional Creators
Townsend, L. W., Bidasaria, H. B., and Norbury, J. W.
Online Version

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Summary
The fragmentation of high-energy galactic heavy ions by nuclear interactions with arbitrary target nuclei is described within the context of a simple abrasion-ablation fragmentation model. The abrasion part of the theory utilizes a quantum-mechanical formalism based upon an optical model potential approximation to the exact nucleus-nucleus multiple-scattering series. Nuclear charge distributions of the excited prefragments are calculated using either a hypergeometric distribution or a method based upon the zero-point oscillations of the giant dipole resonance. The excitation energy of the prefragment is estimated from the geometric clean-cut abrasion-ablation model. The decay probabilities for the various particle emission channels, in the ablation stage of the fragmentation, are obtained from the EVAP-4 Monte Carlo computer program. Elemental production cross sections for 1.88-GeV/nucleon iron colliding with carbon, silver, and lead targets are calculated and compared with experimental data and with the predictions from the semiempirical relations of Silberberg and Tsao.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19840014328.
Accession ID: 84N22396.
NASA-TP-2305.
L-15763.
NAS 1.60:2305.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15708211