The first quadrupole excitations in spherical nuclei and nuclear pairing

Abstract

Excitation energies and transition probabilities of the first 2+ excitations in even lead, tin and nickel isotopes are calculated within the self-consistent Theory of Finite Fermi Systems based on the Energy Density Functional by Fayans et al. A reasonable agreement with available experimental data is obtained. The effect of the density dependence of the effective pairing interaction is analyzed in detail by comparing results obtained with volume and surface pairing. The effect is found to be noticeable, especially for the 2+ energies which are systematically higher at 200-300 keV for the volume paring as compared with the surface pairing case, the latter being in a better agreement with the data.

Presented at International Conference on Nuclear Structure and Related Topics, Dubna, July 2 - 7, 2012

References in corpus (3)

• Z=50 shell gap near ${}^{100}$Sn from intermediate-energy Coulomb excitations in even-mass ${}^{106--112}$Sn isotopes
• Number-conserving theory of nuclear pairing gaps: a global assessment
• Semi-microscopic model of pairing in nuclei

Cited by in corpus (8)

• Self-consistent description of single-particle levels of magic nuclei
• First applications of Fayans functional to deformed nuclei
• Phonon coupling effects in magnetic moments of magic and semi-magic nuclei
• Alpha-decay energies of superheavy nuclei for the Fayans functional
• Fayans functional for deformed nuclei. Uranium region
• Self-consistent Theory of Finite Fermi Systems vs Skyrme-Hartree-Fock method. Spherical nuclei
• Including particle-vibration coupling in the Fayans functional. Odd-even mass differences of semi-magic nuclei
• Self-consistent account for phonon induced corrections to quadrupole moments of odd nuclei. Pole and non-pole diagrams