Final-State Interactions in the Production of Hydrogen and Helium Isotopes by Relativistic Heavy Ions on Uranium

Double-differential cross sections have been measured for high-energy p, d, t, ³He, and ⁴He particles emitted from uranium targets irradiated with ²⁰Ne ions at energies of 250, 400, and 2100 MeV/nucleon and ⁴He ions at 400 MeV/nucleon. By using the shape and yield of the proton energy spectra, the shape and yield of the d, t, ³He, and ⁴He energy spectra can be deduced at all measured angles for all incident projectile energies by assuming that they are formed by a coalescence of cascade nucleons, using a model analogous to that of Butler and Pearson, and Schwarzschild and Zupan {c} {c}{}i {c} {c}{}.