A CONSISTENT ANALYSIS OF (N,N'), (P,P'), (N,P) AND (P,N) MULTISTEP REACTIONS USING THE FESHBACH-KERMAN-KOONIN THEORY

The multistep reaction theory of Feshbach, Kerman and Koonin is used t o analyse data on nuclear reactions to the continuum. The multistep di rect, multistep compound, collective and compound nucleus cross sectio ns are calculated with the same set of parameters and it is found that it is possible to fit the (n, n'), (n,p) and (p, n) data in a fully c onsistent way. The (p, p') data, however, could only be fitted by appr oximately doubling the strength of the effective interaction. Several possible reasons for this were investigated including isospin effects, neutron-proton distinguishability, sensitivity to optical potentials and non-locality effects, but the difficulty still remains.