Abstract
Recently, γ-decay with energies between 1.2 and 1.5 MeV feeding an apparent shape-isomeric ground state in 239U has been reported. The analysis of these high-resolution γ-spectra from resonance neutron-capture in 238U has now been extended to γ-energies well below 1.0 MeV. In total four previously unobserved transitions between 477 keV and 633 keV show a strong positive correlation with the respective class-II admixture into the observed neutron resonance and may therefore be assigned as γ-decay towards the shape-isomeric ground state.
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