Internal Conversion Effect Applications in Identifying New Neutron-Rich Nuclides in the Rare-Earth Region

The new neutron-rich isotope 175Er activity was produced via the reaction 176Yb(n, 2p) by 14 MeV neutron irradiation of natural ytterbium metals. When nuclide 175Er decayed to its daughter nuclide 175Tm, Tm characteristic X rays would be emitted with a certain ratio due to the internal conversions. So X-�� and ��-�� coincidence measurements were employed to successfully identify the neutron-rich isotope activities of rare-earth element from other rare-earth reaction products. And a partial decay scheme of 175Er has been proposed for the first time.