BE-8 AND ALPHA-DECAY OF O-16

The C12(16O,4)12C reaction has been studied at a beam energy of 99 MeV. The data indicate the existence of sequential decays in the form O*164 in the exit channel. The excitation energy of the O16 nucleus and the nature of the partition process leading to the 4 final state, has been reconstructed from the kinematics of the particles. States have been observed at excitation energies of 17.1, 17.5, 18.0, 18.7, 19.3, and 21.4 MeV which decay into Be8+8Be, C12(7.65 MeV, 02+)+ and C12(9.64 MeV, 3-)+. Relative partial decay widths for these three channels have been measured. Angular correlation measurements have been used to deduce the spins of several of the observed states, and indicate spins in the range 2 to 6Latin small letter h with stroke. © 1995 The American Physical Society.