Signature Inversion In Doubly Odd La-124

High-spin states have been studied in neutron-deficient La-124(57)67, populated through the Zn-64(Zn-64,3pn) reaction at 260 MeV. The Gammasphere gamma-ray spectrometer has been used in conjunction with the Microball charged-particle detector, the Neutron Shell, and the Argonne Fragment Mass Analyzer, in order to select evaporation residues of interest. The known band structures have been extended and new bands found. Most of the bands are linked together, allowing more consistent spin and parity assignments. Comparison of band properties to cranking calculations has allowed configuration assignments to be made and includes the first identification of the g(9/2) proton-hole in an odd-odd lanthanum isotope. Two bands have been assigned a pih(11/2)circle timesnuh(11/2) structure; the yrast one exhibits a signature inversion in its level energies below I=18.5 (h) over bar, while the excited one exhibits a signature inversion above I=18.5 (h) over bar.