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. 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. The ground state band of La-147 has been established with a proposed 5/2(+) band head. Angular correlations of cascades have been used to study the spins and parities of the states. The B(E1)/B(E2) ratios and dipole moments between the proposed octupole bands in La-146,La-147 have been measured showing a decreasing trend from La-144 to La-146, and from La-145 to La-147.