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

E. Nácher, B. Rubio, A. Algora, D. Cano-Ott, J. L. Taín, A. Gadea, J. Agramunt, M. Gierlik, M. Karny, Z. Janas, E. Roeckl, A. Blazhev, R. Collatz, J. Döring, M. Hellström, Z. Hu, R. Kirchner, I. Mukha, C. Plettner, M. ShibataK. Rykaczewski, L. Batist, F. Moroz, V. Wittmann, J. J. Valiente-Dobón

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Abstract

The 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.

Original languageEnglish
Article number014308
JournalPhysical Review C - Nuclear Physics
Volume93
Issue number1
DOIs
Publication statusPublished - Jan 13 2016

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Nácher, E., Rubio, B., Algora, A., Cano-Ott, D., Taín, J. L., Gadea, A., Agramunt, J., Gierlik, M., Karny, M., Janas, Z., Roeckl, E., Blazhev, A., Collatz, R., Döring, J., Hellström, M., Hu, Z., Kirchner, R., Mukha, I., Plettner, C., ... Valiente-Dobón, J. J. (2016). Observations of the Gamow-Teller resonance in the rare-earth nuclei above Gd 146 populated in β decay. Physical Review C - Nuclear Physics, 93(1), [014308]. https://doi.org/10.1103/PhysRevC.93.014308