A doorway to Borromean halo nuclei: the Samba configuration
M. T. Yamashita, T. Frederico, M. S. Hussein
Abstract
We exploit the possibility of new configurations in three-body halo nuclei - Samba type - (the neutron-core form a bound system) as a doorway to Borromean systems. The nuclei 12Be, 15B, 23N and 27F are of such nature, in particular 23N with a half-life of 37.7 s and a halo radius of 6.07 fm is an excellent example of Samba-halo configuration. The fusion below the barrier of the Samba halo nuclei with heavy targets could reveal the so far elusive enhancement and a dominance of one-neutron over two-neutron transfers, in contrast to what was found recently for the Borromean halo nucleus 6He + 238U.
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