Core Transitions in the Breakup of Exotic Nuclei

Details Core Transitions in the Breakup of Exotic Nuclei Core Transitions in the Breakup of Exotic Nuclei

2006-02-10

arxiv.org/abs/nucl-th/0602033v1

Phys.Rev. C73 (2006) 031603

Physics

Nuclear Physics

Nuclear Theory

5 pages, 1 figure, accepted Phys. Rev. C

Scientific paper

10.1103/PhysRevC.73.031603

An interesting physical process has been unveiled: dynamical core excitation during a breakup reaction of loosely bound $core+N$ systems. These reactions are typically used to extract spectroscopic information and/or astrophysical information. A new method, the eXtended Continuum Discretized Coupled Channel (XCDCC) method, was developed to incorporate, in a consistent way and to all orders, core excitation in the bound and scattering states of the projectile, as well as dynamical excitation of the core as it interacts with the target. The model predicts cross sections to specific states of the core. It is applied to the breakup of $^{11}$Be on $^9$Be at 60 MeV/u, and the calculated cross sections are in improved agreement with the data. The distribution of the cross section amongst the various core states is shown to depend on the reaction model used, and not simply on the ground state spectroscopic factors.

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