Analytical E1 strength functions of two-neutron halo nuclei: 11-Li and 14-Be
C. Forssen, V. D. Efros, M. V. Zhukov
Abstract
An analytical model, recently developed to study the electromagnetic dissociation (EMD) energy spectra of two-neutron halo nuclei, is applied to 11-Li and 14-Be. We find that a reliable set of experimental data on EMD could help to resolve the problem concerning the structure of the 11-Li ground state. For 14-Be we find a mutual inconsistency between the existing experimental data on the binding energy, radius and EMD energy spectrum. We also conclude that the structure of 14-Be is essentially more complicated than the structure of other Borromean two--neutron halo nuclei.
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