FINAL-STATE INTERACTION EFFECTS IN EXCLUSIVE AND INCLUSIVE QUASI-ELASTIC ELECTRON-SCATTERING FROM C-12

Nucleon emission in the quasi-elastic region is studied for the C-12(e , e' p) and C-12(e, e' n) reactions. We present a model which couples the one-nucleon emission channels microscopically and treats the multi -nucleon emission channels phenomenologically. We analyze the spectral functions extracted from the C-12(e, e' p)B-11 reaction measured at N IKHEF-K and Saclay and make predictions for the C-12(e, e' n)C-11 spec tral functions. The ratio of the C-12(e, e' p)B-11 and C-12(e, e' n)C- 11 spectral functions is found to depend strongly on the two-nucleon i nteraction. We analyze the contribution of the one-proton and one-neut ron emission channels to the inclusive longitudinal and transverse res ponse functions. Our analysis suggests the importance of multinucleon emission in the quasi-elastic region. The ratio of the experimental tr ansverse-to-longitudinal structure functions is satisfactorily reprodu ced.