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Spin-flip (p,n) reactions on /sup 26/Mg, /sup 54/Fe, and /sup 56/Fe at selected proton bombarding energies in the range of 17 to 25 MeV

Thesis/Dissertation ·
OSTI ID:5793852
New data are presented for the /sup 26/Mg(p,n)/sup 26/Al reaction at E/sub p/ = 19.12 and 24.97 MeV, for the /sup 54/Fe(p,n)/sup 54/Co reaction at E/sub p/ = 17.20, 18.60, and 24.60 MeV, and for the /sup 56/Fe(p,n)/sup 56/Co reaction at E/sub p/ = 19.12 and 24.59 MeV. Absolute differential (p,n) cross sections were extracted for 1/sup +/ states in /sup 26/Al, /sup 54/Co, and /sup 56/Co, for the 0/sup +/ isobaric analog state (IAS) in /sup 54/Co and /sup 56/Co, for a 2/sup +/ state in each residual nucleus, and for the 0.199 MeV 7/sup +/ state of /sup 54/Co. DWBA79 was used, with the G-matrix effective nucleon-nucleon interaction of Bertsch et al. (with the central triplet-odd component V/sub to/ = 0) and the Livermore shell model wave functions to calculate differential (p,n) cross sections to 1/sup +/ states and to the /sup 54/Co and /sup 56/Co IAS. The shapes of all DWBA79 calculations were in good agreement with measurements. The ratio n of the angle-integrated measured cross section to the DWBA calculated angle-integrated cross section ranged from n = 0.62 to n = 1.56 for all states with these exceptions: /sup 54/Co IAS (n = 2.59 at 17.20 MeV, n = 2.51 at 18.60 MeV), and /sup 56/Co 1.7203 MeV 1/sup +/ (n = 0.12 at 19.11 MeV, n = 0.10 at 24.59 MeV).
Research Organization:
California Univ., Davis (USA)
OSTI ID:
5793852
Country of Publication:
United States
Language:
English