Abstract
The rare-earth region of the nuclear table around the quasi-doubly magic nucleus is one of the very few places in which the Gamow-Teller (GT) resonance can be populated in decay. The appropriate technique to study such a phenomenon is total absorption spectroscopy, thanks to which one can measure the (GT) distribution in -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 decay of the odd- nuclei , and 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 value. This observation is important in the context of the understanding of the “quenching” of the GT strength.
4 More- Received 26 October 2015
DOI:https://doi.org/10.1103/PhysRevC.93.014308
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