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Title: Unified analysis of spin isospin responses of nuclei

Abstract

We investigate the Gamow-Teller (GT) response functions at a momentum transfer of q=0 fm{sup -1} and the pionic response functions for quasielastic scattering (QES) at q{approx_equal}1.7 fm{sup -1} using the continuum random phase approximation with the {pi}+{rho}+g{sup '} model interaction. The Landau-Migdal (LM) parameters, g{sub NN}{sup '} and g{sub N{delta}}{sup '}, are estimated by comparing the calculations with recent experimental data. The peak of the GT resonance and the pionic response functions below the QES peak constrain g{sub NN}{sup '}, whereas the quenching of the GT total strength and the enhanced pionic strength around the QES peak provide information about g{sub N{delta}}{sup '}. We obtained g{sub NN}{sup '}=0.6{+-}0.1 and g{sub N{delta}}{sup '}=0.35{+-}0.16 at q=0 fm{sup -1} and g{sub NN}{sup '}=0.7{+-}0.1 and g{sub N{delta}}{sup '}=0.3{+-}0.1 at q{approx_equal}1.7 fm{sup -1}. These results indicate that the q dependence of the LM parameters is weak.

Authors:
 [1];  [2];  [3]
  1. Department of Physics, Kyushu University, Higashi, Fukuoka 812-8581 (Japan)
  2. Faculty of Computer and Information Sciences, Hosei University, Koganei, Tokyo 184-8584 (Japan)
  3. Department of Physics, The University of Tokyo, Bunkyo, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
20771161
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.72.067303; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BETA DECAY; GAMOW-TELLER RULES; ISOSPIN; MOMENTUM TRANSFER; NEUTRONS; NUCLEI; PROTON-NUCLEON INTERACTIONS; QUASI-ELASTIC SCATTERING; QUENCHING; RANDOM PHASE APPROXIMATION; RESONANCE; RESPONSE FUNCTIONS; SPIN

Citation Formats

Wakasa, T., Ichimura, M., and Sakai, H. Unified analysis of spin isospin responses of nuclei. United States: N. p., 2005. Web. doi:10.1103/PhysRevC.72.067303.
Wakasa, T., Ichimura, M., & Sakai, H. Unified analysis of spin isospin responses of nuclei. United States. doi:10.1103/PhysRevC.72.067303.
Wakasa, T., Ichimura, M., and Sakai, H. Thu . "Unified analysis of spin isospin responses of nuclei". United States. doi:10.1103/PhysRevC.72.067303.
@article{osti_20771161,
title = {Unified analysis of spin isospin responses of nuclei},
author = {Wakasa, T. and Ichimura, M. and Sakai, H.},
abstractNote = {We investigate the Gamow-Teller (GT) response functions at a momentum transfer of q=0 fm{sup -1} and the pionic response functions for quasielastic scattering (QES) at q{approx_equal}1.7 fm{sup -1} using the continuum random phase approximation with the {pi}+{rho}+g{sup '} model interaction. The Landau-Migdal (LM) parameters, g{sub NN}{sup '} and g{sub N{delta}}{sup '}, are estimated by comparing the calculations with recent experimental data. The peak of the GT resonance and the pionic response functions below the QES peak constrain g{sub NN}{sup '}, whereas the quenching of the GT total strength and the enhanced pionic strength around the QES peak provide information about g{sub N{delta}}{sup '}. We obtained g{sub NN}{sup '}=0.6{+-}0.1 and g{sub N{delta}}{sup '}=0.35{+-}0.16 at q=0 fm{sup -1} and g{sub NN}{sup '}=0.7{+-}0.1 and g{sub N{delta}}{sup '}=0.3{+-}0.1 at q{approx_equal}1.7 fm{sup -1}. These results indicate that the q dependence of the LM parameters is weak.},
doi = {10.1103/PhysRevC.72.067303},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}
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