Systematics of fusion barriers obtained with a modified proximity potential

A systematic semiempirical analysis is presented for excitation functions for complete fusion of complex nuclei. Barrier penetration is included as is the l dependence of the fusion radius. The general form of the proximity potential is assumed and small but important parameter adjustments are made to achieve a fit to experimental data. A correction is presented of s-wave barrier heights and radii for complete fusion. For ZₜZₚ<500 these fusion radii are greater than the empirical reaction radii obtained at energies well above the barrier. This result implies weak surface absorption for ZₜZₚ<500 and the contrary for higher ZₜZₚ.NUCLEAR REACTIONS Semiempirical analysis of complete fusion excitation functions with a modified proximity potential; correlation between s-wave barrier heights and fusion radii; fusion radii exceed empirical interaction radii for ZₜZₚ<500 and the contrary.