Elsevier

Nuclear Physics A

Volume 240, Issue 3, 24 March 1975, Pages 413-424
Nuclear Physics A

Direct reactions to many-channel, many-level final states: (II). (d, p)n and (3He, d)p

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Abstract

In an earlier paper, the cross section for a direct reaction to a generalised positive-energy final state, described by an R-matrix wave function, was derived. Here a distinction is emphasised between two classes of such a reaction, depending on whether it can or cannot decay back to the target state. A major contribution in the latter case can be via direct break-up. This is computed for the reaction 7Li(3He, d)8Be(p)7Li, treated by a stripping mechanism. The dependence of the cross section on the final-state (8Be) channel energy is discussed. The present work uses shell-model wave functions for R-matrix basis states, and this is shown to be appropriate and useful for direct reactions.

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