Abstract:Using the 2SSi(n, 7)29Si reaction, transitions to the ground state and first excited state in 29Si have been studied in the neutron energy range 3-14 MeV with improved neutron energy resolution (of about 100 keV). The 90 ~ cross sections show considerable structure in the entire neutron energy range. Comparison with theoretical calculations shows that compound-nucleus and direct-semidirect processes account for the non-resonant part (smoothly varying part) of the cross section. A microscopic model is, however,… Show more
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