High spin states up to spin $41/2\hslash$ were populated in ${}^{139}\mathrm{Nd}$ using the heavy ion fusion evaporation reaction. The low spin states below $19/2^{-}$ indicate a triaxial shape. Two dipole bands, one negative parity and the other positive parity, have been identified in the present work. The configurations of different high spin states are discussed from a systematic comparison with neighboring $N=79$ odd mass isotopes. The observed dipole bands are compared with the results of the tilted axis cranking calculations.

• Received 5 March 2007

DOI:https://doi.org/10.1103/PhysRevC.76.014306