The c~-and/%decay of the new isotope 167W were observed in the reaction of 191 MeV 36At with 136Ba using a helium-jet and a fast tape-transport system. The identification is based on coincidences with tantalum X-rays and excitation function measurements. The measured half-life is 19.9(5) s. A decay scheme comprising 12 levels was constructed from 77-coincidences. The/~-decay is discussed within experimental and calculated level systematics. Alpha-rays with energy 4.55 (2) MeV were assigned to 167W.
Irradiating LaF3-targets with 36Ar, the decay of the new isotope ~71Re was observed for the first time and its half-life determined to be 15.2(4) s. Based on the measured 7-and X-ray data, a decay scheme could be constructed.
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