Gamow-Teller strength and giant resonances in 90Zr(n,p) at 198 MeV

Gamow - Teller strength in ' ' Ni ( n , p ) reactions at 198 Mev

A. L. Williams, '* W. P. Alford, E. Brash, ' t B. A. Brown, S. Burzynski, '~ H. T. Fortune, O. Hausser, R. Helmer, R. Henderson, P. P. Hui, K. P. Jackson, B. Larson, M. G. McKinzie, D. A. Smith, A. Trudel, 3 5 and M. Vetterli University of Pennsylvania, Philadelphia, Pennsylvania Ig10$ University of Western Ontario, London, Ontario, Canada VGA ZK7 Simon Eraser University, Burnaby, British Colum...

Particle-hole strength excited in the 48Ca(p,n)48Sc reaction at 134 and 160 MeV: Gamow-Teller strength.

Missing and quenched Gamow-Teller strength.

Gamow-Teller strength functions in full (pf) 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 w...

A / I ? + Gamow - Teller strength in nuclei

The distribution of p+ Gamow-Teller strength in 26Mg, 54Fe and 56Ni is calculated in the QRPA and large-basis shell-model spaces. The quenching relative to the simplest jj coupled model found in the QRPA is similar to that found in a shell-model basis which includes 2p2h ground-state correlations within the major shell (sd or pf). For 26Mg there is significant additional quenching found in the ...

The Strength of the Analog and Gamow-teller Giant Resonances and Hindrance of the 2νββ - Decay Rate

An approach for describing the hindrance of the nuclear 2νββ -decay amplitude is proposed. The approach is based on a new formula obtained by a model-independent transformation of the initial expression for the amplitude. This formula takes explicitly into account the hindrance of the decay-amplitude due to the presence of the collective Gamow-Teller state. Calculations are performed within the...