The decay of the 560 ns isomer at 8.6 MeV in 14764Gd83

In (α,xn) and (12C,5n) in-beam γ-ray experiments with pulsed beams the decay of the 560 ns high-spin isomer in 147Gd has been investigated. Extensive coincidence measurements identified more than eighty γ-rays in the isomeric decay which almost all were placed in the level scheme. Of crucial importance for establishing the highly complex decay was the comparison of data from the different reactions and the identification of transitions which bypass the 27 ns isomer at 3.58 MeV. Our data determine the excitation of the 560 ns isomer as 8.588 MeV and suggest 47/2 as its most probable spin. (orig.)