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Cross sections and spectra for (n,xp) and (n, x. cap alpha. ) reactions on /sup 58/Ni and /sup 60/Ni at energies of 9. 4 and 11 MeV

Journal Article · · Nucl. Sci. Eng.; (United States)
OSTI ID:7058102
Cross sections and spectra for (n,xrho) and (n,x..cap alpha..) reactions on /sup 58/Ni and /sup 60/Ni at energies of 9.4 and 11 MeV and for /sup 58/Ni at 8 MeV have been measured. This energy range spans the threshold for the (n,n'rho) reaction. Based on comparison of Hauser-Feschbach calculations with the measured spectra, this reaction provides a large fraction of the proton spectrum at 11 MeV for /sup 58/Ni. Both (n,xrho) and (n,x..cap alpha..) processes appear to be due largely to compound nuclear processes. Comparison of the measurements obtained here and those previously published at-15 MeV with calculations allows us to infer information about the nuclear level densities. Cross sections for (n,d) reactions are sufficiently small that only upper limits can be derived for them.
Research Organization:
John E. Edwards Accelerator Lab., Ohio Univ., Athens, OH 45701
OSTI ID:
7058102
Journal Information:
Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 95:1; ISSN NSENA
Country of Publication:
United States
Language:
English