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Excited states in the odd-proton nucleus ~(125)Cs were investigated by means of in-beam γ-ray spectroscopy.The πg_(7/2) band is observed to fork into a △I=1 coupled band and a △I=2 decoupled band at high spins.To assign the possible configurations of these two bands,experimental B(M1)/B(E2) ratios and signature splittings have been evaluated for the △I=1 band,and calculations based on the geometrical model,cranked shell model and total Routhian surfaces model have been performed.They are suggested to be a near-oblate band built on the(πg_(7/2)/d_(5/2)(υh_(11/2)~2 configuration and a prolate band built on the πg_(7/2)(πh_(11/2))~2 configuration,respectively.
Excited states in the odd-nucleon ~ (125) Cs were investigated by means of in-beam γ-ray spectroscopy. The πg_ (7/2) band is observed to fork into a △ I = 1 coupled band and a △ I = 2 decoupled band at high spins. To assign the possible configurations of these two bands, experimental B (M1) / B (E2) ratios and signature splittings have been evaluated for the ΔI = 1 band, and calculations based on the geometrical model , cranked shell model and total Routhian surfaces model have been performed. They are suggested to be a near-oblate band built on the (πg_ (7/2) / d_ (5/2) (υh_ (11/2) configuration and a prolate band built on the πg_ (7/2) (πh_ (11/2)) ~ 2 configuration, respectively.