%0 Journal Article
%T T-z =-1 -> 0 beta decays of Ni-54, Fe-50, Cr-46, and Ti-42 and comparison with mirror (He-3,t) measurements
%A Molina, F. et al
%A Rubio, B.
%A Agramunt, J.
%A Algora, A.
%A Domingo-Pardo, C.
%A Gadea, A.
%A Tain, J. L.
%J Physical Review C
%D 2015
%V 91
%N 1
%I Amer Physical Soc
%@ 0556-2813
%G English
%F Molina_etal2015
%O WOS:000347924300002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2087), last updated on Thu, 12 Feb 2015 11:12:19 +0000
%X We have studied the beta decay of the T-z = -1, f(7/2) shell nuclei Ni-54, Fe-50, Cr-46, and Ti-42 produced in fragmentation reactions. The proton separation energies in the daughter T-z = 0 nuclei are relatively large (approximate to 4-5 MeV) so studies of the. rays are essential. The experiments were performed at GSI as part of the Stopped-beam campaign with the RISING setup consisting of 15 Euroball Cluster Ge detectors. From the newly obtained high precision beta-decay half-lives, excitation energies, and beta branching ratios, we were able to extract Fermi and Gamow-Teller transition strengths in these beta decays. With these improved results it was possible to compare in detail the Gamow-Teller (GT) transition strengths observed in beta decay including a sensitivity limit with the strengths of the T-z = +1 to T-z = 0 transitions derived from high resolution (He-3,t) reactions on the mirror target nuclei at RCNP, Osaka. The accumulated B(GT) strength obtained from both experiments looks very similar although the charge exchange reaction provides information on a broader energy range. Using the "merged analysis" one can obtain a full picture of the B(GT) over the full Q(beta) range. Looking at the individual transitions some differences are observed, especially for the weak transitions. Their possible origins are discussed.
%R 10.1103/PhysRevC.91.014301
%U https://doi.org/10.1103/PhysRevC.91.014301
%P 014301-19pp