Crossing the dripline to 11 N using elastic resonance scattering Academic Article uri icon

abstract

  • The level structure of the unbound nucleus 11 N has been studied by 10 C+p elastic resonance scattering in inverse geometry with the LISE3 spectrometer at GANIL, using a 10 C beam with an energy of 9.0 MeV/ nucleon. An additional measurement was done at the A1200 spectrometer at MSU. The excitation function above the 10 C+p threshold has been determined up to 5 MeV. A potential-model analysis revealed three resonance states at energies 1.27 +0.18-0.05 MeV (= 1.440.2 MeV), 2.01 +0.15-0.05 MeV (=0.840.2 MeV), and 3.750.05 MeV (=0.600.05 MeV) with the spin-parity assignments I = 1/2+,1/2-,5/2+, respectively. Hence, 11 N is shown to have a ground state parity inversion completely analogous to its mirror partner 11 Be. A narrow resonance in the excitation function at 4.330.05 MeV was also observed and assigned spin parity 3/2 - .

published proceedings

  • Physical Review C - Nuclear Physics

author list (cited authors)

  • Markenroth, K., Axelsson, L., Baxter, S., Borge, M., Donzaud, C., Fayans, S., ... Wolski, R.

publication date

  • January 1, 2000 11:11 AM