Abstract
We investigate properties of bound and resonance states in the Λ9Be nucleus. To reveal the nature of these states, we use a three-cluster 2α+Λ microscopic model. The model incorporates Gaussian and oscillator basis functions and reduces a three-cluster Schrödinger equation to a two-body like many-channel problem with the two-cluster subsystems (Λ5He and 8Be) being in a bound or a pseudo-bound state. Influence of the cluster polarization on the energy and widths of resonance states in Λ9Be and on elastic and inelastic Λ5He +α scattering is analyzed.
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