N=14 Shell Closure in 22O Viewed through a Neutron Sensitive Probe
Creators
- 1. Institut de Physique Nucleaire, IN2P3-CNRS, 91406 Orsay (France)
- 2. DPTA/SPN-CEA Bruyeres, 91680 Bruyeres-le-Chatel Cedex 12 (France)
- 3. GANIL (CEA/DSM-CNRS/IN2P3), B.P. 5027, 14076 Caen Cedex (France)
- 4. SPhN, DAPNIA, CEA Saclay, 91191 Gif sur Yvette Cedex (France)
Description
To investigate the behavior of the N=14 neutron gap far from stability with a neutron-sensitive probe, proton elastic and 21+ inelastic scattering angular distributions for the neutron-rich nucleus 22O were measured using the MUr a STrip detector array at the Grand Accelerateur National d'Ions Lourds facility. A deformation parameter βp,p'=0.26±0.04 is obtained for the 21+ state, much lower than in 20O, showing a weak neutron contribution to this state. A microscopic analysis was performed using matter and transition densities generated by continuum Skyrme-Hartree-Fock-Bogoliubov and quasiparticle random phase approximation calculations, respectively. The ratio of neutron to proton contributions to the 21+ state is found close to the N/Z ratio, demonstrating a strong N=14 shell closure in the vicinity of the neutron drip line
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 96
- Journal Issue
- 1
- Journal Page Range
- p. 012501-012501.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37078579
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; ELASTIC SCATTERING; HARTREE-FOCK METHOD; HARTREE-FOCK-BOGOLYUBOV THEORY; INELASTIC SCATTERING; NEUTRON-RICH ISOTOPES; NEUTRONS; NUCLEAR FORCES; OPTICAL MODELS; OXYGEN 20; OXYGEN 22; PROTON-NUCLEON INTERACTIONS; PROTONS; RANDOM PHASE APPROXIMATION; SHELL MODELS; SKYRME POTENTIAL
- Descriptors DEC
- APPROXIMATIONS; BARYON-BARYON INTERACTIONS; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALCULATION METHODS; DISTRIBUTION; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEI; NUCLEON-NUCLEON INTERACTIONS; NUCLEON-NUCLEON POTENTIAL; NUCLEONS; OXYGEN ISOTOPES; PARTICLE INTERACTIONS; POTENTIALS; RADIOISOTOPES; SCATTERING; SECONDS LIVING RADIOISOTOPES
Optional Information
- Notes
- (c) 2006 The American Physical Society