The half-lives of the intrinsic states at 1,285.8 and 1,502.2keV in as4w have been measured in the decay of lS4Re m to be 8.33 3-0.18 ~ts and 2.35 3-0.I0 ns, respectively. These half-lives determine absolute gamma-ray transition probabilities of eight transitions and yield upper limits for three transitions. The decay scheme of lS4Rem--+ls4W is improved through measurements of delayed gamma-ray spectra with a Ge(Li) detector. Spin and Nilsson model interpretations are discussed.
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