Neutron spectra from the 26Mg(3He, n)28Si reaction were measured at bombarding energies of 23.1 and 45.5 MeV with a neutron TOF spectrometer. Neutron angular distributions for the transitions to the ground and 1.78-MeV 2+ states in 28Si have been analyzed with DWBA and coupled-channel calculations. All the experimental data are reproduced consistently on the basis of the one-step two-proton stripping process, when one uses the two-nucleon spectroscopic amplitudes obtained from a large-basis shell-model calculation. Contributions of two-step processes have turned out to be apparently small, but the experimental data of-the 1.78-MeV state at 45.5 MeV bombarding energy are fitted satisfactorily only when two-step processes are taken into account.
ASJC Scopus subject areas
- Physics and Astronomy(all)