Rotational structures in La-125 and alignments in A approximate to 130 nuclei - art. no. 014308

High-spin states in La-125 have been populated using the Mo-94(Ca-40,2 alph a p) reaction at a beam energy of 180 MeV. Four of the five previously know n rotational structures have been extended to higher spin (I less than or e qual to 71/2) and excitation energy. In addition, three new sequences were observed, two of which form a strongly-coupled band. This latter structure is likely based on the [404]9/2 proton orbital, which is associated with st rong deformation driving behavior in nearby Pr and Pm nuclei. A systematic examination of the crossing frequencies based on the rotational alignment o f h(11/2) protons and h(11/2) neutrons is also presented. The dependence of the crossing frequencies on deformation and Fermi surface can be inferred based on experimental observation and evidence for reduced proton and possi bly neutron pairing fields is presented.