Absolute cross sections for short-lived alpha emitting, very neutron deficient nucleides resulting from the interaction of 480 MeV protons with several medium mass targets (Ho, Tm, Re, Ta, Au) have been measured at the TRIUMF facility (Vancouver, Canada). Activities were transported using a gas jet system and relative transport efficiencies for products of various Z were measured. Calculations for the production of such deep spallation products were performed using the empirical Silberberg–Tsao method and the more fundamental, intranuclear cascade – evaporation model, and compared against the observed values.
Comparisons of predictions from two intranuclear-cascade models with measured secondary proton spectra at several angles from 62- and 39-MeV protons on various elements