TY  - JOUR
AU  - Grodner, E. et al
AU  - Gadea, A.
AU  - Algora, A.
AU  - Agramunt, J.
AU  - Domingo-Pardo, C.
AU  - Molina, F.
AU  - Rubio, B.
PY  - 2014
DA  - 2014//
TI  - Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 092501
EP  - 5pp
VL  - 113
IS  - 9
PB  - Amer Physical Soc
AB  - 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.
SN  - 0031-9007
UR  - https://doi.org/10.1103/PhysRevLett.113.092501
DO  - 10.1103/PhysRevLett.113.092501
LA  - English
N1  - WOS:000341292800008
ID  - Grodner_etal2014
ER  -