The nucleus W176 has been studied using the reaction Nd150(30Si,4n), with prompt and delayed γ-γ coincidence techniques. A K=14 isomer (t1/270 ns) is found to exhibit a unique decay pattern, primarily decaying to K=0 states, in contrast to all previously studied high-K isomers. Calculations have been perfomed of both Coriolis mixing and tunneling through a potential barrier in the triaxial degree of freedom to understand these unusual decays. While Coriolis mixing models do not reproduce the variations in the decay patterns in neighboring nuclei, the tunneling calculations are remarkably successful.
ASJC Scopus subject areas
- Physics and Astronomy(all)