Coupled-channel evaluations of cross sections for scattering involving particle-unstable resonances

P. Fraser; K. Amos; L. Canton; G. Pisent; S. Karataglidis; J. P. Svenne; D. Van Der Knijff

doi:10.1103/PhysRevLett.101.242501

Coupled-channel evaluations of cross sections for scattering involving particle-unstable resonances

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

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

How does the scattering cross section change when the colliding bound-state fragments are allowed particle-emitting resonances? This question is explored in the framework of a multichannel algebraic scattering method of determining nucleon-nucleus cross sections at low energies. Two cases are examined, the first being a gedanken investigation in which n+C12 scattering is studied with the target states assigned artificial widths. The second is a study of neutron scattering from Be8, a nucleus that is particle unstable. Resonance character of the target states markedly varies evaluated cross sections from those obtained assuming stability in the target spectrum.

Original language	English
Article number	242501
Journal	Physical Review Letters
Volume	101
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.101.242501
Publication status	Published - 8 Dec 2008
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.101.242501

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AU - Svenne, J. P.

AU - Van Der Knijff, D.

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AB - How does the scattering cross section change when the colliding bound-state fragments are allowed particle-emitting resonances? This question is explored in the framework of a multichannel algebraic scattering method of determining nucleon-nucleus cross sections at low energies. Two cases are examined, the first being a gedanken investigation in which n+C12 scattering is studied with the target states assigned artificial widths. The second is a study of neutron scattering from Be8, a nucleus that is particle unstable. Resonance character of the target states markedly varies evaluated cross sections from those obtained assuming stability in the target spectrum.

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Coupled-channel evaluations of cross sections for scattering involving particle-unstable resonances

Abstract

ASJC Scopus subject areas

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