Eur. Phys. J. A 12, 413-419 (2001)
Microscopic three-cluster study of the low-energy photodisintegrationP. Descouvemont
Physique Nucléaire Théorique et Physique Mathématique, Université Libre de Bruxelles, CP229, B-1050 Brussels, Belgium email@example.com
(Received: 7 September 2001 / Revised version: 25 October 2001 Communicated by P. Schuck)
The 9Be and 9B nuclei are investigated in a microscopic three-cluster model involving (or ) configurations. The 8Be (0+,2+)+n and 5He (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 5 He + configurations cannot be neglected to derive accurate results. The 9Be photodisintegration cross-section is shown to be mainly determined by 8Be + n channels at low energies, but 5 He + channels become important beyond MeV.
25.40.Lw - Radiative capture.
24.50.+g - Direct reactions.
25.60.Bx - Elastic scattering.
© Società Italiana di Fisica, Springer-Verlag 2001