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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A spatial configuration of light nuclei that involves two excess neutrons ((6)He, (10)Be, and (12)B) is studied by analyzing cross sections for various reactions on these nuclei: (6)He(alpha, alpha)(6)He, (9)Be(d, p)(10)Be, and (10)B(t, p)(12)B. Pole dineutron-transfer mechanisms (dineutron configuration of the neutron periphery) and second-order mechanisms involving sequential neutron transfer (cigar-like configuration of the neutron periphery) are taken into account in the calculations. It is shown that the neutron periphery is drastically different in the nuclei in question: in (6)He, there is a halo receiving a contribution from both configurations; in (10)Be, there is an only slightly noticeable halo featuring a contribution of practically one neutron from the cigar-like configuration; and, in (12)B, there is a neutron skin.