Persistent contribution of unbound quasiparticles to the pair correlation in the continuum Skyrme-Hartree-Fock-Bogoliubov approach

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.054301· OSTI ID:21502448

Zhang, Y ^[1]; Matsuo, M ^[2]; Meng, J ^[3]

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1. State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871 (China)
2. Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)
3. School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191 (China)

The neutron pair correlation in nuclei near the neutron drip-line is investigated using the self-consistent continuum Skyrme-Hartree-Fock-Bogoliubov theory formulated with the coordinate-space Green's function technique. Numerical analysis is performed for even-even N=86 isotones in the Mo-Sn region, where the 3p{sub 3/2} and 3p{sub 1/2} orbits lying near the Fermi energy are either weakly bound or unbound. The quasiparticle states originating from the l=1 orbits form resonances with large widths, which are due to the low barrier height and the strong continuum coupling caused by the pair potential. Analyzing in detail the pairing properties and roles of the quasiparticle resonances, we found that the l=1 broad quasiparticle resonances persist to feel the pair potential and contribute to the pair correlation even when their widths are comparable with the resonance energy.

• OSTI ID: 21502448
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevC.83.054301; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRELATIONS
COUPLING
ELECTRONIC STRUCTURE
FERMI LEVEL
GREEN FUNCTION
HARTREE-FOCK-BOGOLYUBOV THEORY
ISOTONIC NUCLEI
NEUTRONS
NUMERICAL ANALYSIS
ORBITS
QUASI PARTICLES
RESONANCE
SKYRME POTENTIAL
BARYONS
ELEMENTARY PARTICLES
ENERGY LEVELS
FERMIONS
FUNCTIONS
HADRONS
MATHEMATICS
NUCLEI
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
POTENTIALS