THE DOUBLY CLOSED-SHELL NUCLEUS SN-132 - COLLECTIVITY AND P-H STATES

The angular momenta and parities of the low lying states of Sn-132 hav e been firmly determined through studies of the beta-decay of In-132. The lowest lying state with a negative parity is shown to have a colle ctive octupole character. Several particle-hole multiplets have been i dentified, including the lowest lying proton excitation. Theoretical e stimates of multiplet positions and multiplet splittings, based on the analogy with Pb-208, agree well with the data. More than about 20% of the theoretically estimated bound states of Sn-132 have been identifi ed.