Microscopic Calculations of Charge-Exchange Excitations in Stable and Unstable Nuclei

Journal Article · Wed Apr 26 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2200932· OSTI ID:20798539

Fracasso, S; Colo, G ^[1]

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1. Dipartimento di Fisica dell'Universita degli Studi, via Celoria 16, 20133 Milan (Italy)

Microscopic calculations of nuclear states excited by means of charge-exchange reactions, in particular of the isobaric analog resonance, are presented for the case of even-even Sn isotopes, by making a comparison with the presently available experimental data and giving predictions for unstable systems. The framework is a fully self-consistent non-relativistic QRPA built on the top of HF-BCS, including the charge symmetry and charge independence breaking (CSB-CIB) forces and the electromagnetic spin-orbit (in addition to the Coulomb interaction), as charge-breaking terms in the nuclear Hamiltonian. The fully self-consistency of our method provides the restoration of the symmetries which are spontaneously broken at the ground state level, such as the isospin symmetry. This allows to calculate physical observables, such as the isospin admixture in the parent ground state, without any spurious contribution.

• OSTI ID: 20798539
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 831; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BCS THEORY
CHARGE EXCHANGE
CHARGE INDEPENDENCE
CHARGE-EXCHANGE REACTIONS
COMPARATIVE EVALUATIONS
EXCITATION
GROUND STATES
HAMILTONIANS
HARTREE-FOCK METHOD
ISOBARIC ANALOGS
ISOSPIN
NUCLEAR STRUCTURE
NUCLEI
RELATIVISTIC RANGE
RESONANCE
SCATTERING
SPIN
SYMMETRY
TIN ISOTOPES