New Levels And Reinvestigation Of Octupole Correlations In La-146,La-147

High spin states of neutron-rich La-146,La-147 have been reinvestigated by gamma-gamma-gamma and gamma-gamma-gamma-gamma coincidence data from a Cf-252 spontaneous fission experiment by using Gammasphere. Thirty-two new transitions in La-146 are observed. Two new bands in La-146 have been established. One of them is proposed to be the octupole parity partner of the previously known band. Twenty new transitions in La-147 are observed. The ground state band of La-147 has been established with a proposed 5/2(+) band-head. Angular correlation of cascades has been used to study the spins and parities of the states. The B(E1)/B(E2) ratios and dipole moments of bands in La-146,La-147 have been measured.