Core polarization effects in sd-shell nuclei and charge-symmetry breaking in the nuclear mean field

Journal Article · Thu Dec 01 00:00:00 EST 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.2921· OSTI ID:6699192

Auerbach, N; Bartel, J; Wenes, G

The proton and neutron densities and nuclear potentials are calculated for the deformed sd-shell nuclei /sup 28/Si and /sup 32/S in the framework of the constrained Hartree-Fock method and compared with the results of the spherical nucleus /sup 40/Ca. Coulomb core polarization effects are responsible for differences in the proton and neutron Hartree-Fock potentials. These charge-asymmetry effects in the nuclear mean field must be taken into account when trying to decide whether the charge asymmetry observed in proton and neutron scattering is due to a genuine charge asymmetry in the nuclear force and, if possible, to put an upper limit on the magnitude of this effect. Our calculations indicate that there is no enhancement of the charge asymmetry due to nuclear deformation. The often proposed volume integral of the nuclear potential is found not to be an appropriate tool to investigate charge-asymmetry effects in nuclei due to a large cancellation in the integral.

• Research Organization: School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
• OSTI ID: 6699192
• Journal Information: Phys. Rev. C; (United States), Vol. 38:6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
SILICON 28
NUCLEAR POTENTIAL
SULFUR 32
CALCIUM 40
CHARGE DISTRIBUTION
COULOMB FIELD
DEFORMED NUCLEI
HARTREE-FOCK METHOD
MEAN-FIELD THEORY
NEUTRONS
POLARIZATION
PROTONS
SCATTERING
SHELL MODELS
SKYRME POTENTIAL
SYMMETRY BREAKING
ALKALINE EARTH ISOTOPES
BARYONS
CALCIUM ISOTOPES
ELECTRIC FIELDS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEI
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
POTENTIALS
SILICON ISOTOPES
STABLE ISOTOPES
SULFUR ISOTOPES
653001* - Nuclear Theory- Nuclear Structure
Moments
Spin
& Models