High Spin States in 136,137La and 148Ce Nuclei

High spin states in 136,137La and 148Ce nuclei have been investigated. The new level schemes for these nuclei have been established. In 136La, observed band crossing as well as the signature splitting and inversion in πh11/2⊗νh11/2 band has been discussed. Other two bands were proposed as oblate deformation with γ ∼ -60°. In 137La, several new bands have been established. The band crossing and oblate deformation have been discussed. In 148Ce, the double octupole deformation bands with s = +1 and s = -1 have been proposed. © 2006 American Institute of Physics.