Spin-Isospin Resonances and the Neutron Skin of Nuclei

D. Vretenar, N. Paar, T. Nikšić, and P. Ring
Phys. Rev. Lett. 91, 262502 – Published 29 December 2003

Abstract

The Gamow-Teller resonances (GTR) and isobaric analog states (IAS) of a sequence of even-even Sn target nuclei are calculated by using the framework of the relativistic Hartree-Bogoliubov model plus proton-neutron quasiparticle random-phase approximation. The calculation reproduces the experimental data on ground-state properties, as well as the excitation energies of the isovector excitations. It is shown that the isotopic dependence of the energy spacings between the GTR and IAS provides direct information on the evolution of neutron-skin thickness along the Sn isotopic chain. A new method is suggested for determining the difference between the radii of the neutron and proton density distributions along an isotopic chain, based on measurement of the excitation energies of the GTR relative to the IAS.

  • Figure
  • Figure
  • Received 12 August 2003

DOI:https://doi.org/10.1103/PhysRevLett.91.262502

©2003 American Physical Society

Authors & Affiliations

D. Vretenar

  • Physics Department, Faculty of Science, University of Zagreb, Zagreb, Croatia

N. Paar

  • Physik-Department der Technischen Universität München, D-85748 Garching, Germany
  • and Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany

T. Nikšić

  • Physics Department, Faculty of Science, University of Zagreb, Zagreb, Croatia
  • and Physik-Department der Technischen Universität München, D-85748 Garching, Germany

P. Ring

  • Physik-Department der Technischen Universität München, D-85748 Garching, Germany

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 91, Iss. 26 — 31 December 2003

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×