Complete fusion of heavy ions withAl27

Abstract
Cross sections for evaporation residues following complete fusion have been measured for the bombardment of Al27 with 81-, 105-, 126-, and 168-MeV O16, 138- and 210-MeV Ne20, and 336-MeV S32. The results were obtained using a counter telescope and, in some cases, differ considerably from previous work with mica track detectors. The experimental critical angular momenta for fusion are in good agreement with recent theoretical calculations for the O and Ne bombardments. Our data suggest parameters for the critical distance of approach which are significantly smaller than previously reported values.