%0 Journal Article
%T Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62
%A Grodner, E. et al
%A Gadea, A.
%A Algora, A.
%A Agramunt, J.
%A Domingo-Pardo, C.
%A Molina, F.
%A Rubio, B.
%J Physical Review Letters
%D 2014
%V 113
%N 9
%I Amer Physical Soc
%@ 0031-9007
%G English
%F Grodner_etal2014
%O WOS:000341292800008
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1919), last updated on Thu, 02 Oct 2014 11:18:21 +0000
%X Search for a new kind of superfluidity built on collective proton-neutron pairs with aligned spin is performed studying the Gamow-Teller decay of the T = 1, J(pi) = 0(+) ground state of Ge-62 into excited states of the odd-odd N = Z nucleus Ga-62. The experiment is performed at GSI Helmholtzzentrum fur Shwerionenforshung with the Ge-62 ions selected by the fragment separator and implanted in a stack of Si-strip detectors, surrounded by the RISING Ge array. A half-life of T-1/2 = 2 82.9(14) ms is measured for the Ge-62 ground state. Six excited states of Ga-62, populated below 2.5 MeV through Gamow-Teller transitions, are identified. Individual Gamow-Teller transition strengths agree well with theoretical predictions of the interacting shell model and the quasiparticle random phase approximation. The absence of any sizable low-lying Gamow-Teller strength in the reported beta-decay experiment supports the hypothesis of a negligible role of coherent T = 0 proton-neutron correlations in Ga-62.
%R 10.1103/PhysRevLett.113.092501
%U https://doi.org/10.1103/PhysRevLett.113.092501
%P 092501-5pp