Yrast 8+ and 9+ states of 22Na
Vermeer WJ., Pringle DM., Garman EF., Wright IF.
Gamma-decaying high-spin states of 22Na populated in the 12C(14N, α) reaction were studied, using a recoil-coincidence technique to measure values of Γγ Γ and an α-γ coincidence arrangement to measure lifetimes and γ-decay branches. Good candidates have been found for the yrast 8+ and 9+ levels at excitation energies of 8572±3 and 9813±3 keV, respectively. Their properties are compared with those predicted by the shell model and test these calculations in the region where band termination is expected. © 1989.