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Preequilibrium reactions with complex particle channels

Author:
Kalbach, C  


Journal:
PHYSICAL REVIEW C


Issue Date:
2005


Abstract(summary):

Investigations of nucleon induced reactions at incident energies of 14-90 MeV resulting in the emission of complex particles (A = 2-4) have provided insights which complement those previously obtained from (N, xN) reactions. The description of the preequilibrium energy spectra required modifications to an earlier phenomenological model for direct pickup reactions. This model supplements the usual exciton preequilibrium model. Work on complex particle induced reactions confirms some of these results, extends them to include stripping and exchange reactions, and provides evidence for a projectile dependence of the average effective matrix elements for the residual interactions in the exciton model. A full description of reactions with complex projectiles will require the inclusion of a realistic breakup component and the resulting reduction of the cross section available for the exciton model calculations. Reactions with complex particles in the entrance and/or exit channels have provided indirect evidence for the amount of surface peaking of the initial target-projectile interaction. A summary of additional data needed to help resolve remaining questions is presented.


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