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Formation and decay of resonance state in $^{9}$Be and $^{9}$B nuclei. Microscopic three-cluster model investigations

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arxiv 1706.05514 v1 pith:4LLIFMQE submitted 2017-06-17 nucl-th

classification nucl-th
keywords three-clusteralphanucleiresonancemodelstatesdecaydominant
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abstract

We study nature of the low-lying resonance states in mirror nuclei $^{9}$Be and $^{9}$B. Investigations are performed within a three-cluster model. The model makes use of the hyperspherical harmonics, which provides convenient description of three-cluster continuum. The dominant three-cluster configurations $\alpha+\alpha+n$ and $\alpha+\alpha+p$ in $^{9}$Be and $^{9}$B, respectively, are taken into account. Dominant decay channels for all resonance states in $^{9}$Be and $^{9}$B are explored. Much attention is paid to the controversial $1/2^{+}$ resonance states in both nuclei. We study effects of the Coulomb interaction on energy and width of three-cluster resonances in the mirror nuclei $^{9}$Be and $^{9}$B. We also search for the Hoyle-analogue state which is a key step for alternative way of $^{9}$Be and $^{9}$B syntheses in a triple collision of clusters in a stellar environment.

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  1. On three-cluster resonance structure of hypernuclei $_{\Lambda}^{7}$He, $_{\Lambda}^{7}$Li and $_{\Lambda}^{7}$Be

    nucl-th 2026-08 conditional novelty 6.0 of 10

    A three-cluster model predicts many narrow and broad resonance states, including states with widths below 10 keV, in the hypernuclei 7ΛHe, 7ΛLi and 7ΛBe.

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