We present two group structures [SU(4) and SU(3,1)] which are generalizations of the SU(3) model, by allowing for excitations outside major shells. We discuss an application on ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$.

NUCLEAR STRUCTURE SU(3) model, ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$.

• Received 7 May 1982

DOI:https://doi.org/10.1103/PhysRevC.27.1356