Energy-dependent target widths in a coupled-channel scattering study

L. Canton, P. R. Fraser, J. P. Svenne, K. Amos, S. Karataglidis, D. Van Der Knijff

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The question of how the scattering cross section changes when the spectra of the colliding nuclei have low-excitation particle-emitting resonances is explored using a multichannel algebraic scattering method. As a test case, the particle-unstable nucleus Be8 has been considered as a target. Nucleon-nucleus scattering cross sections, as well as the spectra of the compound nuclei formed, have been determined from calculations that consider, as well as those that disregard, particle-emission widths of the target nuclear states. The resonant character of the unstable excited states introduces a problem because the low-energy tails of these resonances can intrude into the subthreshold, bound-state region. This unphysical behavior needs to be corrected by modifying, in an energy-dependent way, the shape of the target resonances from the usual Lorentzian form. The resonance function must smoothly reach zero at the elastic threshold. We explore herein a way of achieving this condition.

Original languageEnglish
Article number047603
JournalPhysical Review C - Nuclear Physics
Issue number4
Publication statusPublished - 19 Apr 2011

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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