A new model optical potential for Ps formation in positron scattering from H and He
Dipartimento di Chimica, Università di Roma -
Città Universitaria, 00185 Rome, Italy
Accepted: 25 January 1996
A phenomenological optical potential is constructed by computing a local approximation to it by means of dispersion relations. Its short-range, correlation part is also obtained from a generalized damping function without empirical parameters and the full result is finally applied, with considerable success, to positron scattering from atomic targets including the Ps formation channel.
PACS: 34.10.+x – General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.) / 34.90.+q – Other topics in atomic and molecular collision processes and interactions / 34.50.Lf – Chemical reactions, energy disposal, and angular distribution, as studied by atomic and molecular beams
© EDP Sciences, 1996