Odd-odd nuclei are good candidates for probing possible structure changes away from the valley of stability. By using the projected shell model in which deformed Nilsson single-particle states are taken to build the model basis, we study band properties in odd-odd Mn ($Z=25$) isotopes with neutron number $N=33,35$, and 37. With the help of model analysis, we interpret the low-lying positive-parity states in these nuclei in terms of their intrinsic structures. Our study on high-spin negative-parity states explores the important role of the neutron $g_{9/2}$ orbit in this mass region.

• Received 24 March 2012

DOI:https://doi.org/10.1103/PhysRevC.85.054307