Gamma Radiation Following the Decay of Dy¹⁶⁵

Abstract

The transition of gamma-rays in Ho¹⁶⁵ emitted in the decay of Dy¹⁶⁵ (140 min) has been studied with γ-γ coincidence and sum coincidence techniques. In addition to previously reported gamma-rays, (178), ∼483, and ∼515 keV gamma-rays are found in coincidence experiment. About 1 MeV gamma-rays is resolved into 998 and 1055 keV gamma-rays. A proposed decay scheme is presented. The measured half-life of Dy¹⁶⁵ is 142.4±0.5 min.