Nuclear Data Sheets for A=178

The present revision of the nuclear structure properties for the nuclides belonging to the A=178 mass chain contains many improvements and additions to the material presented in the previous evaluation (1994Br18, Nucl. Data Sheets 72, 221 (1994)). Besides updating many values, and including supplementary data for already known levels, transitions and level schemes, the most noteworthy modifications with respect to the prior evaluation are extensive additions to the level schemes or Yb-178, Hf-178, Ta-178, W-178. Ir-178, Pt-178 and Hg-178, based on HI reaction works performed after the last cutoff (late (July 1993), and to Hf-178 due to new data from recent Coulomb excitation experiments. Light ion (He-3, alpha) beam experiments have added many data for 178Ta. Beta decay studies have also provided significant data for W-178 and Pt-178. Lastly the first report of the identification of Tl-178 suit Pb-178 is included.