Coulombic effect and renormalization in nuclear pairing

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.031302· OSTI ID:21499460

Nakada, H; Yamagami, M ^[1]

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1. Department of Physics, Graduate School of Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522 (Japan)

We investigate the effects of the Coulomb force on the nuclear pairing properties by performing the Gogny Hartree-Fock-Bogolyubov calculations for the N=20, 28, 50, 82, and 126 nuclei. The Coulomb force reduces the proton pair energy and the even-odd mass difference by about 25%, except for nuclei at and around the proton shell or subshell closure. We then propose a renormalization scheme via a reduction factor {gamma}{sub p} for the proton pairing channel. It is found that a single value {gamma}{sub p}=0.90 accounts well for the Coulombic effect for nuclei covering a wide range of the mass number and the neutron excess, including the nuclei around the shell or subshell closure.

• OSTI ID: 21499460
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 83; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
COULOMB FIELD
ELECTRIC FIELDS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HARTREE-FOCK-BOGOLYUBOV THEORY
MASS DIFFERENCE
MASS NUMBER
NEUTRONS
NUCLEONS
PARTICLE PROPERTIES
PROTONS
REDUCTION
RENORMALIZATION
SIMULATION