Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-06-23
Physics
Nuclear Physics
Nuclear Theory
4 pages 4 figures, Proceedings of the conference "Nuclear Structure and Dynamics", Dubrovnik, May 2009
Scientific paper
We study the correlations between two neutrons in borromian nuclei $^{11}$Li and $^6$He by using a three-body model with a density-dependent contact two-body interaction. It is shown that the two neutrons show a compact bound feature at the nuclear surface due to the mixing of single particle states of different parity. We study the Coulomb breakup cross sections of $^{11}$Li and $^6$He using the same three-body model. We show that the concentration of the B(E1) strength near the threshold can be well reproduced with this model as a typical nature of the halo nuclei. The energy distributions of two emitted neutrons from dipole excitations are also studied using the correlated wave functions of dipole excitations.
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