The even-odd Xe and Ba isotopes were studied in the averaged multi-j fermion orbit interacting boson-fermion model I. The agreements of the experimental and calculated energy spectra are quite good. The analyses on wave functions indicate that the mixture of fermion orbits increases and the quasiband structure becomes less prominent for the heavier even-odd Xe and Ba isotopes. The B(E2) values for ${}_{}{}^{131}{}_{}{}^{}$,133Xe were calculated and compared with the experimental data.

• Received 2 December 1988

DOI:https://doi.org/10.1103/PhysRevC.39.2390