Fraser P., Amos K., Canton L., Pisent G., Karataglidis S., Svenne J.P., Van Der Knijff D.
School of Physics, University of Melbourne, VIC 3010, Australia; Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131, Italy; Department of Physics and Electronics, Rhodes University, Grahamstown 6140, South Africa; Department of Physics and Astronomy, University of Manitoba, Winnipeg, MN R3T 2N2, Canada; Advanced Research Computing, Information Division, University of Melbourne, VIC 3010, Australia
Fraser, P., School of Physics, University of Melbourne, VIC 3010, Australia; Amos, K., School of Physics, University of Melbourne, VIC 3010, Australia; Canton, L., Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131, Italy; Pisent, G., Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131, Italy; Karataglidis, S., Department of Physics and Electronics, Rhodes University, Grahamstown 6140, South Africa; Svenne, J.P., Department of Physics and Astronomy, University of Manitoba, Winnipeg, MN R3T 2N2, Canada; Van Der Knijff, D., Advanced Research Computing, Information Division, University of Melbourne, VIC 3010, Australia
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. © 2008 The American Physical Society.