Core Transitions in the Breakup of Exotic Nuclei

Abstract

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.

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

References in corpus (1)

• Determination of S17 from 8B breakup by means of the method of continuum-discretized coupled-channels

Cited by in corpus (5)

• Fusion and Direct Reactions of Halo Nuclei at Energies around the Coulomb Barrier
• Coupled-channels effects in elastic scattering and near-barrier fusion induced by weakly bound nuclei and exotic halo nuclei
• B(E1) Strengths from Coulomb Excitation of 11Be
• Deducing spectroscopic factors from wave-function asymptotics
• XCDCC: Core Excitation in the Breakup of Exotic Nuclei