Low-lying states in the unbound N-11 nucleus

E Casarejos, C Angulo, P J Woods, F C Barker, P Descouvemont, M Aliotta, T Davinson, P Demaret, M Gaelens, P Leleux, Z Liu, M Loiselet, A S Murphy, A Ninane, I A Roberts, G Ryckewaert, J S Schweitzer, F Vanderbist

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Abstract

We have investigated the low-energy states of N-11 by the resonant elastic-scattering method in inverse kinematics using a C-10 beam and a (CH2)(n) target at the CYCLONE facility at Louvain-la-Neuve. Recoil protons were detected at laboratory angles theta(lab)=5.2 degrees-18.3 degrees in a Delta E-E detector system. The absolute C-10+p elastic cross-section data were analyzed in the R-matrix framework. We found N-11 to be unbound with respect to proton emission by 1.54 +/- 0.02 MeV, with a decay width of 0.83 +/- 0.03 MeV. These results are used to calculate the two-proton decay width of the O-12 ground state.

Original languageEnglish
Article number014319
Pages (from-to)-
Number of pages6
JournalPhysical Review C
Volume73
Issue number1
DOIs
Publication statusPublished - Jan 2006

Keywords

  • GROUND-STATE
  • BE-11
  • WIDTHS
  • SHELL
  • LIGHT
  • SCATTERING
  • ENERGIES
  • MODEL
  • HALO

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