Unified Analysis of Spin Isospin Responses of Nuclei

Abstract

We investigated the Gamow-Teller (GT) strength distribution, especially the quenching with respect to the GT sum rule, and the enhancement of the pionic responses in the quasielasic scattering region, in the same theoretical framework. That is the continuum random phase approximation with the pi+rho+g' model interaction, incorporated with distorted wave impulse approximation and two-step calculations. From this analysis we searched the Landau-Migdal parameters, g'NN and g'ND, through the comparison with the experimental data of the GT strength distribution obtained at 300 MeV and the spin-longitudinal (pionic) cross sections IDq of (p,n) at 350 and 500 MeV. This comprehensive and sophisticated study gave a common set of g'NN=0.6-0.7 and g'ND=0.2-0.4, for both low and high momentum transfers.

11 pages, 4 figures, submitted to Phys. Rev. C

References in corpus (4)

• Determination of the Gamow-Teller Quenching Factor from Charge Exchange Reactions on 90Zr
• Distorted wave impulse approximation analysis for spin observables in nucleon quasi-elastic scattering and enhancement of the spin-longitudinal response
• Delta-Hole Interaction in Nuclei and the Gamow-Teller Strength in ^90Nb
• Spin-Isospin Response Functions and the Effects of the $\Delta$-Hole Configurations in Finite Nuclei

Cited by in corpus (16)

• Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei
• A new Skyrme interaction with improved spin-isospin properties
• Extended Skyrme interactions for nuclear matter, finite nuclei and neutron stars
• Skyrme functional with tensor terms from \textit{ab initio} calculations of neutron-proton drops
• Extended Skyrme interaction (II): ground state of nuclei and of nuclear matter
• Extended Skyrme interaction (I): spin fluctuations in dense matter
• Interplay between low-lying isoscalar and isovector dipole modes: a comparative analysis between semi-classical and quantum approaches
• Spin-isospin Response in Finite Nuclei from an Extended Skyrme Interaction
• Charge-exchange excitations with finite range interactions including tensor terms
• New Skyrme energy density functional for a better description of the Gamow-Teller Resonance
• Study of nuclear correlation effects via 12C(p,n)12N(g.s.,1+) at 296 MeV
• Landau parameters for energy density functionals generated by local finite-range pseudopotentials
• Polarization transfer measurements for ${}^{12}\mathrm{C}(\vec{p},\vec{n}{)}^{12}\mathrm{N}(g.s.,1^{+})$ at 296 MeV and nuclear correlation effects
• Cross-sections and analyzing powers for $(p,n)$ reactions on ${}^3\mathrm{He}$ and ${}^4\mathrm{He}$ at 346 MeV
• Systematic study of proton radioactivity half-lives based on the relationship between the Skyrme-Hartree-Fock and the macroscopic quantities of nuclear matter
• New Skyrme parametrizations to describe finite nuclei and neutron star matter with realistic effective masses. II. Adjusting the spin-dependent terms