Abstract
A formalism based on the Dirac distorted-wave impulse approximation is developed for the (p, 2p) and related reactions on various nuclei. The formalism employs a relativistic Love-Franey t-matrix in which the direct and exchange contributions are treated on an equal footing. Three different bound-state wave functions are considered, one based on a Woods-Saxon form in which the strength parameters are fit to the appropriate proton separation energies and two others based on Hartree potentials. Proton distortions are treated using a global optical potential, and finite-range effects are included exactly. As an initial application, the (p, 2p) reaction on 40Ca is examined at incident proton energies of 200 and 300 MeV. Comparison with the data is encouraging but reveals the need for further refinements to the formalism. Possible modifications of the model are discussed.
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