Unified Understanding of Spin Isospin Response Functions of Nuclei
Abstract
Recent (p, n) and (n, p) experiments at intermediate energies provided reliable data on nuclear spin-isospin responses. We investigated them with emphasis on the contrasting phenomena of the quenching of the total strength of the Gamow-Teller transition, and the enhancement of the pionic response in the quasielasic region, in a unified theoretical framework, that is the continuum RPA with the π + ρ + g' model, incorporated with DWIA and two-step calculations. We extracted a common set of the Landau-Migdal parameters, g'NN=0.6-0.7 and g'NΔ=0.2-0.4 for both low and high momentum transfers.
- Publication:
-
SPIN 2004
- Pub Date:
- August 2005
- DOI:
- 10.1142/9789812701909_0134
- Bibcode:
- 2005spph.conf..641I