Spectroscopy of N=82,83 {sup 136,137}Xe isotopes from {sup 248}Cm fission.

Prompt {gamma}-ray cascades in neutron-rich nuclei around doubly magic {sup 132}Sn have been studied at Eurogam II using a {sup 348}Cm fission source. Here they report results for the four-valence-proton N = 82 nucleus {sup 136}Xe and for its N = 83 neighbor {sup 137}Xe. For both nuclei, the yrast level spectra have been considerably extended, and empirical nucleon-nucleon interactions have been used to assign probable shell model configurations for most of the observed levels