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Observations of the Gamow-Teller resonance in the rare-earth nuclei above Gd 146 populated in β decay

AuthorsNácher, Enrique ; Rubio, Berta ; Algora, Alejandro ; Cano Ott, Daniel; Taín, José Luis ; Gadea, Andrés ; Agramunt, Jorge ; Gierlik, M.; Karny, M.; Janas, Z.; Roeckl, E.; Blazhev, A.; Collatz, R.; Döring, J.; Hellström, M.; Hu, Z.; Kirchner, R.; Mukha, I. ; Plettner, C.; Shibata, M.; Rykaczewski, K.; Batist, L.; Moroz, F.; Wittmann, V.; Valiente-Dobón, J. J.
Issue Date13-Jan-2016
PublisherAmerican Physical Society
CitationPhysical Review C - Nuclear Physics 93: 014308 (2016)
AbstractThe rare-earth region of the nuclear table around the quasi-doubly magic nucleus Gd146 is one of the very few places in which the Gamow-Teller (GT) resonance can be populated in β decay. The appropriate technique to study such a phenomenon is total absorption spectroscopy, thanks to which one can measure the B(GT) distribution in β-decay experiments even when it is very fragmented and lies at high excitation energy in the daughter nucleus. Results on the GT resonance measured in the β decay of the odd-Z, N=83 nuclei Tb148, Ho150, and Tm152 are presented in this work and compared with shell-model calculations. The tail of the resonance is clearly observed up to the limit imposed by the Q value. This observation is important in the context of the understanding of the >quenching> of the GT strength. ©2016 American Physical Society
Description13 págs.; 11 figs. ; 1 tab.
Publisher version (URL)https://doi.org/10.1103/PhysRevC.93.014308
Identifiersdoi: 10.1103/PhysRevC.93.014308
issn: 1089-490X
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(IFIC) Artículos
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