6533b837fe1ef96bd12a1d2d

RESEARCH PRODUCT

Crossing the Dripline to 11N Using Elastic Resonance Scattering

K. MarkenrothL. AxelssonS. BaxterM. J. G. BorgeC. DonzaudS. FayansH. O. U. FynboV. Z. GoldbergS. GrévyD. Guillemaud-muellerB. JonsonK. -M KällmanS. LeenhardtM. LewitowiczT. LönnrothP. ManngårdI. MartelA. C. MuellerIvan MukhaT. NilssonG. NymanN. A. OrrK. RiisagerG. V. RogachevM. -G Saint-laurentI. N. SerikovN. B. Shul GinaO. SorlinM. SteinerO. TengbladM. ThoennessenE. TryggestadW. H. TrzaskaF. WenanderJ. S. WinfieldR. Wolski

subject

FOS: Physical sciencesPhysics::Accelerator PhysicsNuclear Physics - ExperimentHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsNuclear Experiment (nucl-ex)[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear ExperimentNuclear Experiment

description

The level structure of the unbound nucleus 11N has been studied by 10C+p elastic resonance scattering in inverse geometry with the LISE3 spectrometer at GANIL, using a 10C beam with an energy of 9.0 MeV/u. An additional measurement was done at the A1200 spectrometer at MSU. The excitation function above the 10C+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 (Gamma=1.44 +-0.2 MeV), 2.01(+0.15-0.05) MeV, (Gamma=0.84 +-$0.2 MeV) and 3.75(+-0.05) MeV, (Gamma=0.60 +-0.05 MeV) with the spin-parity assignments I(pi) =1/2+, 1/2- and 5/2+, respectively. Hence, 11N is shown to have a ground state parity inversion completely analogous to its mirror partner, 11Be. A narrow resonance in the excitation function at 4.33 (+-0.05) MeV was also observed and assigned spin-parity 3/2-.

yearjournalcountryeditionlanguage
2000-06-21
10.1103/physrevc.62.034308http://arxiv.org/abs/nucl-ex/0006011