Energy Levels of the Odd Manganese Nuclei from the (d,3He) Reaction

The 54,56,58Fe(d,3He) 53,55,57Mn reactions have been studied at a bombarding energy of 80 MeV. Angular distributions have been measured in the range of 6° to 30° lab. Energy levels up to excitation energies of 9.2 MeV, 7.2 MeV, and 7.4 MeV in 53Mn, 55Mn, and 57Mn, respectively, have been studied. DWBA calculations were employed to extract spectroscopic factors. The results concerning negative-parity levels have been compared with shell-model calculations. For the case of 53Mn, a comparison of the distribution of the experimental and the shell-model f7/2 strengths has been made. The spectroscopic strengths for s1/2 and d3/2 pickup are rather well predicted by QPCC and CVM calculations.