Showing papers by "Véronique Bernard published in 1980"
TL;DR: In this article, a microscopic particle-vibration model is used to study the single-particle energies, spectroscopic factors and nucleon effective mass in 208 Pb. The relevant quantities are deduced from the knowledge of the mass operator which is the sum of a Hartree-Fock term and an energy dependent term coming from the coupling to RPA vibrations.
133 citations
TL;DR: In this paper, the positions of the isobaric analog resonances (IAR) are calculated using the HF-TDA theory with a complete proton particle-neutron hole basis.
20 citations
TL;DR: In this article, the Coulomb displacement energy in the /sup 41/Sc-/ sup 41/Ca system is calculated using three different methods using Hartree-Fock densities at some stage.
Abstract: The Coulomb displacement energy in the /sup 41/Sc-/sup 41/Ca system is calculated using three different methods. All three methods make use of Hartree-Fock densities at some stage. The Hartree-Fock calculations are performed with the SIII and SIV Skyrme-type forces. The results from all three methods are in agreement with each other. The resulting Coulomb displacement energy is less than 4 or less than 6 percent smaller than the experimental one depending on the force employed. Higher order Coulomb corrections are evaluated and it is found that they can be very large (of the order of 1 MeV) and depend on the approach taken. The use of the analog state defined with the T/sub -/ operator as a representation of the physical analog leads to an overestimate of the Coulomb displacement energy by more than 0.5 MeV. The inclusion of Coulomb distortion terms restores the result by reducing the Coulomb displacement energy. One can also conclude from the present study that the mechanism of treating higher order Coulomb corrections by taking the giant isovector monopole as the only important intermediate state is in fact the correct one and gives precise results.
5 citations