Investigating the structure of 11B using particle-𝛾 coincidences
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Abstract
The structure of 11B was investigated at Legnaro National Laboratories of INFN using the 6Li(6Li,pγ) fusion-evaporation reaction. Emitted protons feeding excited states of 11B were detected by the GALTRACE silicon telescopes in coincidence with γ rays measured by the GALILEO HPGe array. The level and γ-decay scheme of 11B was reconstructed on an even-by-event basis by combining particle and γ-ray spectroscopy techniques. In particular, the γ decay from the possible near-threshold proton resonance was searched for, providing first results on its γ-ray branch with a 5σ and 3σ confidence level. Results are discussed along with predictions of the Shell Model Embedded in the Continuum (SMEC).
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Bottoni, S., Corbari, G., Leoni, S., Fornal, B., Goasduff, A., Capra, S., Mengoni, D., Albanese, E., Ziliani, S., Benzoni, G., Sánchez-Benítez, A. M., Bracco, A., Brugnara, D., Camera, F., Ciemała, M., Cieplicka-Oryńczak, N., Crespi, F. C. L., Dueñas, J. A., Gadea, A., … Zhang, G. (2025). Investigating the structure of 11B using particle-γ coincidences. Nuclear Physics A, 1062, 123138. https://doi.org/10.1016/j.nuclphysa.2025.123138
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