Measurement of cross sections of heavy fragments formed in the interaction of 0.65-12.7 GeV /sup 4/He with /sup 209/Bi using the Makrofol track detector

Formation of heavy fragments in the fission mass region during the interaction with /sup 209/Bi of the 0.65, 1.74, 5.1, 8.8 and 12.7 GeV /sup 4/He is studied using a sandwich configuration of the Makrofol polycarbonate track detector. Events are analyzed in which at least one heavy fragment is detected. Fragments produced in the experiment are identified… (More)