Mechanisms in knockout reactions

Details Mechanisms in knockout reactions Mechanisms in knockout reactions

2009-02-16

arxiv.org/abs/0902.2747v1

Phys.Rev.Lett.102:232501,2009

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

10.1103/PhysRevLett.102.232501

We report on the first detailed study of the mechanisms involved in knockout reactions, via a coincidence measurement of the residue and fast proton in one-proton knockout reactions, using the S800 spectrograph in combination with the HiRA detector array at the NSCL. Results on the reactions $^9$Be($^9$C,$^8$B+X)Y and $^9$Be($^8$B,$^7$Be+X)Y are presented. They are compared with theoretical predictions for both the diffraction and stripping reaction mechanisms, as calculated in the eikonal model. The data shows a clear distinction between the two reaction mechanisms, and the observed respective proportions are very well reproduced by the reaction theory. This agreement supports the results of knockout reaction analyses and their applications to the spectroscopy of rare isotopes.

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