PROTON-SCATTERING OFF BE-9 AND THE FINAL-STATE INTERACTION IN THE (E,E'P) AND (GAMMA,P) REACTIONS ON B-10

Differential cross sections and analysing powers for the reaction Be-9 (p over arrow pointing right,p') have been measured at incident proton energies of 54.7 and 74.7 MeV. The new data, supplemented by existing data in the energy range from 30 to 220 MeV, has been subjected to va rious analyses with the aim of obtaining optical potentials to calcula te final-state interaction effects in proton-knockout reactions. A con ventional optical model analysis fails to give a description that is i n simultaneous agreement with all elastic scattering data. A considera ble improvement is obtained by including the quadrupole contribution t o elastic scattering, both with phenomenological and microscopic poten tials. Finally, the influences of the various reaction mechanisms and of the differences between the derived potentials are studied when app lied to (e,e'p) and (gamma,p) calculations in the distorted wave impul se approximation.