Observation of anE0Isomeric Transition from theU238Shape Isomer

Abstract
The existence of the γ branch in the decay of the U238 shape isomer is confirmed by the observation of an E0 transition between the isomer and the ground state. The data are consistent with the excitation energy of 2558 keV, spin of 0+, and half-life of ≈ 200 ns of the isomer.