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Cross sections for multistep direct emission in nucleon-induced reactions

par Marcinkowski, Andrzej;Demetriou, Paraskevi
Référence AIP Conference Proceedings, 769, page (1213-1216)
Publication Publié, 2005-05

Article révisé par les pairs

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Résumé :

The Feshbach, Kerman, and Koonin (FKK) theory allows for one-particle emission only. However, in nucleon-induced reactions at incident energies larger than the particle binding energy the nucleus is excited to unbound particle-hole states that give rise to more complicated processes. To take these processes into account the cross section for the one-step reactions 1SD is split into the 1SDbound to bound final states and the 1SD unbound to unbound final states. Only the 1SDbound can be folded into the MSDbound cross sections of FKK. Using the non-normal DWBA matrix elements and allowing for the different sequences of reaction stages that contribute to a given MSD reaction, it is shown that the MSD bound cross sections for one-particle emission together with the 1SDunbound for the more complicated processes give a good description of the direct emission of nucleons. © 2005 American Institute of Physics.