Os-188 low excited levels

The gamma -ray spectra of Re-188 decay have been studied by using a compton -suppressed spectrometer and a three parameters gamma-gamma -T list coincid ence system. Six gamma -rays at 557, 810, 1463, 1867, 1936 and 2022 keV and three levels at 1443, 1936 and 2022 keV are confirmed again. Eight new gam ma -rays at 309.60+/-0.04, 826.90+/-0.02, 979.29+/-0.08, 1086.13+/-0.03, 11 03.7+/-0.4, 1828.2+/-0.1, 1842.5+/-0.2, 1982.5+/-0.2 keV have been identifi ed, three new levels at 309.60, 1828.2 and 1982.5 keV are assigned. The bet a (-)-decay branching ratio is deduced.