THE DISPERSIVE OPTICAL-MODEL FOR N-208 AND N+BI-209(PB)

The dispersive optical model (DOM) provides a natural connection betwe en the shell model potential for bound states and the optical model fo r nucleon scattering at positive energies. At TUNL we have developed D OMs for neutron scattering for ten nuclei between Al-27 and Bi-209. In these studies we rely on TUNL measurements of differential cross-sect ion (sigma(theta)) and analyzing power, as well as a wealth of sigma(t heta) and total cross section measurements from numerous other laborat ories. In this paper we briefly outline the DOM method and the achieve ments in describing scattering data for n + Pb-208 and n + Bi-209 and single-particle bound-state data for neutrons in Pb-208.