par Descouvemont, Pierre
Référence European Physical Journal A. Hadrons and Nuclei, 12, 4, page (413-419)
Publication Publié, 2001
Article révisé par les pairs
Résumé : The 9Be and 9B nuclei are investigated in a microscopic three-cluster model involving α+α+n (or α + α + p) configurations. The 8Be(0+, 2+) + n and 5He(3/2-, 1/2-) + α (or mirror) channels are included by taking account of the unstable nature of 8Be and 5He. Spectroscopic properties of 9Be and 9B are analyzed. We show that the 5He+α configurations cannot be neglected to derive accurate results. The 9Be(γ, αα)n photodisintegration cross-section is shown to be mainly determined by 8Be+n channels at low energies, but 5He+α channels become important beyond Eγ ≈ 4 MeV.

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