Configuration assignments and decay of La-126 high-spin bands

High spin states of La-126 have been populated using the reaction Sn-116+N- 14 at Bs MeV. gamma-rays and conversion electrons were detected with the GA REL array. Multipolarities of the lowest-lying in-band dipole transitions h ave been determined from the deduced internal conversion coefficients. Expe rimental B(M1)/B(E2) ratios have been derived for the bands and compared wi th calculated values using the Donau-Frauendorf geometrical model. Configur ations are proposed for the bands comparing them with cranked shell model c alculations and on the basis of the measured B(M1)/B(E2) ratios. The beta-d ecay of La-126 has also been revisited. The population of the Ba-126 levels gives a probable spin value of five for the decaying high-spin 126La state with T(1/2)approximate to 64 s which may indicate a signature inversion in the pi h(11)/(2)upsilon h(11/2) band.