Missing and Quenched Gamow Teller Strength

Abstract

Gamow-Teller strength functions in full $(pf{)}^8$ spaces are calculated with sufficient accuracy to ensure that all the states in the resonance region have been populated. Many of the resulting peaks are weak enough to become unobservable. The quenching factor necessary to bring into agreement the low lying observed states with shell model predictions is shown to be due to nuclear correlations. To within experimental uncertainties it is the same that is found in one particle transfer and (e,e') reactions. Perfect consistency between the observed ${}^{48}Ca(p,n{)}^{48}Sc$ peaks and the calculation is achieved by assuming an observation threshold of 0.75\% of the total strength, a value that seems typical in several experiments

11 pages, 6 figures avalaible upon request, RevTeX, FTUAM-94/01

References in corpus (1)

• A Full $PF$ Shell Model Study of a~=~48 Nuclei

Cited by in corpus (36)

• The Shell Model as Unified View of Nuclear Structure
• Status and Future of Nuclear Matrix Elements for Neutrinoless Double-Beta Decay: A Review
• Shell model study of the isobaric chains A=50, A=51 and A=52
• The effective g_A in the pf-shell
• Shell Model Description of Isotope Shifts in Calcium
• Full pf shell study of A = 47 and A = 49 nuclei
• Double beta decay of ${}^{48}$Ca
• Double Gamow-Teller transitions and its relation to neutrinoless $\beta \beta$ decay
• Nuclear structure and double beta decay
• Shell Model Monte Carlo studies of neutron-rich nuclei in the 1s-0d-1p-0f shells
• Electron capture in stars
• Gamow-Teller strength distributions in fp-shell nuclei
• Ab initio calculation of nuclear structure corrections in muonic atoms
• Muon capture on nuclei with N > Z, random phase approximation, and in-medium renormalization of the axial-vector coupling constant
• Gamow-Teller strength in 54Fe and 56Fe
• An efficient method for evaluating energy-dependent sum rules
• Spin-orbit decomposition of ab initio wavefunctions
• Muon capture on nuclei: random phase approximation evaluation versus data for 6 $\le$ Z $\le$ 94 nuclei
• Gamow-Teller transitions and deformation in the proton-neutron random phase approximation
• SU(3) symmetry breaking in lower fp-shell nuclei
• Benchmark calculation of inclusive electromagnetic responses in the four-body nuclear system
• $Abinitio$ calculations for Gamow-Teller strengths in $sd$ shell
• A T-odd Momentum Correlation in Radiative β-Decay
• Tests of the random phase approximation for transition strengths
• Shell model description of Gamow-Teller strengths in $pf$-shell nuclei
• A Lanczos algorithm for linear response
• Quenching factor of Gamow-Teller and spin dipole giant resonances
• Shell model calculation of the beta- and beta+ partial halflifes of 54Mn and other unique second forbidden beta decays
• Role of momentum transfer in the quenching of Gamow-Teller strength
• Canonical form of Hamiltonian matrices
• Isospin mixing and Fermi transitions: Selfconsistent deformed mean field calculations and beyond
• No-core shell model for 48-Ca, 48-Sc and 48-Ti
• Gamow-Teller transitions of neutron-rich $N=82,81$ nuclei by shell-model calculations
• Microscopic description of Gamow-Teller transitions in middle pf--shell nuclei by a realistic shell model calculation
• SU(3) versus deformed Hartree-Fock
• ${\beta }^{+}$ and electron capture of fp shell nuclei with $Tz=-2$