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arXiv · 2006.08137

Structure of the ground and excited states in $_{\Lambda}^{9}$Be nucleus

Yu. A. Lashko·A. V. Nesterov·V. S. Vasilevsky
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Abstract

We investigate properties of bound and resonance states in the $_{\Lambda}^{9}$Be nucleus. To reveal the nature of these states, we use a three-cluster $2\alpha+\Lambda$ microscopic model. The model incorporates Gaussian and oscillator basis functions and reduces a three-cluster Schr\"{o}dinger equation to a two-body like many-channel problem with the two-cluster subsystems ($_{\Lambda}^{5}$He and $^8$Be) being in a bound or a pseudo-bound state. Influence of the cluster polarization on the energy and widths of resonance states in $_{\Lambda}^{9}$Be and on elastic and inelastic $_{\Lambda}^{5}$He+$\alpha$ scattering is analyzed.

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Yu. A. Lashko, A. V. Nesterov, V. S. Vasilevsky. 2020-06-15. Structure of the ground and excited states in $_{\Lambda}^{9}$Be nucleus. https://arxiv.org/abs/2006.08137

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