Gamma Scheme Following Hg-208 Beta(-) Decay

The Hg-208 has been produced in multi-nucleon transfer reactions induced by O-18 ion beam on a thick,natural lead target. The irradiated lead pieces were put into agasthermochromatographic device, in which the Hg-element products were separated and collected. The 4 pi Delta E-beta-gamma-gamma end gamma-X(gamma) coincidence as well as time-successive gamma-ray single spectrum measurements were performed. A partial gamma scheme following Hg-208 beta(-) decay has been proposed for the first time, which has taken into account 21 gamma-rays and two new energy levels at 1365 and 1727keV, respectively.