Excitation functions for the 180(p, n)lSF reaction were measured at bombarding energies Ep=4.6 to 6.6 MeV. In and near two resonances of the yield curves at Ep-----5.622 and 6.061 MeV, angular distributions were measured with neutron timeof-flight techniques. The strong neutron decay to the T= 1 state in 18F and the similarity of the 1SO(p, n) and 180(n, n) yield curves give good evidence that the structures in the 180(p, n) yield curve arise from the formation of T= 3/2 states in 19F. A twolevel-analysis does not give satisfactory fits to the strongly asymmetric angular distributions.
A neutron time-of-flight investigation of the 57Fe(p, n)57Co reaction performed at bombarding energies of 4.9, 5.6 and 6.2 MeV results in new energy levels of 57Co. In addition, gamma spectra and n-?~-coincidence spectra were taken to complete the decay scheme of 57Co up to an excitation energy of 4 MeV. * Jetzige Adresse: Universit/it Erlangen-Ntirnberg.
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