Gamow-Teller strength near the pion threshold

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 GAMOW - TELLER STRENGTH FUNCTION FOR " Cl + 37 Ar

Gamow-Teller strength in the region of 100Sn.

New calculations are presented for Gamow-Teller beta decay of nuclei near 'Sn. Essentially all of the Sn Gamow-Teller decay strength is predicted to go to a single state at an excitation energy of 1.8 MeV in In. The first calculations are presented for the decays of neighboring odd-even and odd-odd nuclei which show, in contrast to ' Sn, surprisingly complex and broad Gamow-Teller strength dist...

Gamow-teller Strength Distribution in the -decay of Exotic Nuclei

We describe experimental results on the Gamow-Teller strength distribution as obtained from the B-decay of exotic nuclei. The most complete results, in light nuclei, confirm the absence of strength noted in (p,n) measurements. In heavier nuclei it is the remote tail of the resonance that is established by 8-decay.