LIGHT PARTICLE-EVAPORATION RESIDUE COINCIDENCES FOR THE B-79-27 SYSTEM AT 11.8 MEV(AL)NUCLEON/

Evaporation residues (ER) of Z=34-43 are measured in singles and in co incidence with emitted protons, deuterons, tritons, and alpha particle s. Measurements are done with a large detector array that covers the s cattering angles from 2.5 degrees to 25 degrees. The energy centroids of the coincidence spectra of the protons are reasonably well describe d by statistical model calculations assuming complete fusion, although those for the deuterons and tritons are not. The alpha-particle spect ra are significantly different than the calculated ones. The slopes of the high energy spectra of the protons required a level density param eter a>A/12. Comparisons between the experimental ER singles spectra a nd complete fusion calculations show small deviations that can be expl ained by incomplete fusion however, when analyzed in coincidence with light particles a very good description with complete fusion is found especially if the emission of intermediate mass fragments is included in the calculations.