Physics – Nuclear Physics
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvc..47..267w&link_type=abstract
Physical Review C (Nuclear Physics), Volume 47, Issue 1, January 1993, pp.267-276
Physics
Nuclear Physics
6
3H-, 3He-, And 4He-Induced Reactions, Origin, Formation, And Abundances Of The Elements
Scientific paper
Mass, energy, and angular distributions have been measured for A=6-30 fragments formed in the 4He+28Si reaction at bombarding energies of 117.4 and 198.5 MeV. The data are compared with calculations which account for the reaction dynamics in terms of an intranuclear cascade, followed by statistical decay of the excited residues. General agreement between the data and calculations is found for the spectral shapes and mass distributions; however, the experimental angular distributions are significantly more forward peaked than predicted. This suggests a failure of the model to account satisfactorily for momentum transfer in the collision stage. These results extend linear momentum systematics for 4He projectiles near the Fermi velocity, to significantly lower target mass than previously measured. Implications of the data to questions of cosmic ray astrophysics and radiation damage in microelectronic circuits are also discussed.
Breuer Herbert
Kwiatkowski K.
Mathews Grant J.
Viola Victor E.
Wilson Graham W.
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