[3][4][5][6][7] given for the existence of low-lying 0 + states in deformed actinide nuclei that did not have the properties of a β-vibration or of a pairing vibration.Evidence that the [505]11/2 − oblate orbital is associated with reduced pairing was first presented by J.D. Garrett et al. [8,9]. But a direct test of the underlying microscopic structure of |0 + 2 is required if we are to be completely confident in our interpretation of these states. a e-mail: jfss@tlabs.ac.za In many cases the single-particle orbitals dominating the configuration of a nuclear state can be ascertained from its population in direct reactions. However the |0 + 2 levels in N = 90 nuclei are very weakly populated in

An experiment was performed with the EUROGAM II array to investigate the reaction channels that are open in the fusion of a beam on the actinide target at a series of energies around the Coulomb barrier. The symmetric fission products identified from the level structures seem to suggest that a proton and neutrons are emitted prior to fission.

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