HEAVY-ION TRANSFER-REACTIONS AS A DIFFUSION PROCESS

The transfer reactions induced by Si28 on Te130 at Elab=140 MeV exhibit properties which can be explained with the picture of classical Coulomb trajectories (angular distributions, limited mass transfer, average Q values). However, several characteristics such as strongly decreasing average Q values at forward angles can be understood only in terms of multiple interactions. Presentation of the data as a function of angle, energy loss, and transferred mass reveals the two aspects: the domain of one-step character and the region of multistep processes. Applying a diffusion model, the mass and energy transport coefficients are deduced. They agree well with those obtained from deep inelastic collisions. NUCLEAR REACTIONS Si28 + Te130; E=140 MeV; transfer reactions; measured Q and A;; deduced drift and diffusion coefficients for energy dissipation and mass transport. © 1978 The American Physical Society.