Synthesis and Gamma Decay of New Heavy Neutron-Rich Isotope 175Er
- Received Date: 1995-08-10
Abstract: A new isotope 175Er was synthesized for the first time by the 176Yb(n,2p)175Er reaction in irradiation of natural metal ytterbium targets with 14 MeV neutrons. The activities of 175Er were observed by γ(X) ray spectroscopy. Eight new γ rays of 76.5, 120.9, 123.7, 128.5,227.3,234.0,281.4, and 1167.5 keV with half-life of 1.2±0.3 min were found and assigned to the β decay of 175Er. A partial decay scheme of 175Er was proposed.