Multistep direct processes in polarization phenomena and composite particle emission

The statistical multistep theory of Feshbach, Kerman and Koonin has establi shed itself in describing proton-induced preequilibrium reactions over a wi de angular range up to an incident energy of 200 MeV. Extensions to the the ory made it possible to also predict both the continuum cross sections and analysing powers of the ((p) over right arrow, p'), ((p) over right arrow, alpha) and ((p) over right arrow,He-3) reactions at incident energies below 100 MeV. These reactions were recently also measured at incident energies above 100 MeV, thus providing further testing grounds of the inferred multi step reaction mechanism.