Weakly-bound rare isotopes with a coupled-channel approach that includes resonant levels

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dc.contributor.author Canton, L.
dc.contributor.author Fraser, P.R.
dc.contributor.author Svenne, J.P.
dc.contributor.author Karataglidis, D.
dc.contributor.author van der Knijff, D.
dc.contributor.author Amos, K.
dc.date.accessioned 2012-10-08T10:18:10Z
dc.date.available 2012-10-08T10:18:10Z
dc.date.issued 2010
dc.identifier.citation Canton, L. [et al.]. 2011. Weakly-bound rare isotopes with a coupled-channel approach that includes resonant levels. arXiv:1008.0049v1 [nucl-th] en_US
dc.identifier.issn 0022-2488
dc.identifier.uri http://hdl.handle.net/10210/7811
dc.description.abstract 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 multi-channel algebraic scattering (MCAS) method. As a test case, the light-mass nuclear target ⁸Be, being particle-unstable, has been considered. Nucleon-nucleus scattering cross sections, as well as the spectra of the compound nuclei formed, have been determined from calculations that do, and do not, consider 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 sub-threshold, bound-state region. This unphysical behaviour needs to be corrected by modifying, in an energy-dependent way, the shape of the target resonances from the usual Lorentzian one. The resonance function must smoothly reach zero at the elastic threshold. Ways of achieving this condition are explored in this paper. en_US
dc.language.iso en en_US
dc.publisher Arxiv.org en_US
dc.rights © arxiv, 2011. Article is available online: http://arxiv.org/abs/1008.0049 en_US
dc.subject Multi-channel algebraic scattering en_US
dc.subject Isotopes en_US
dc.subject Radioactive ion beam en_US
dc.title Weakly-bound rare isotopes with a coupled-channel approach that includes resonant levels en_US
dc.type Article en_US

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