Effective-range approach and scaling laws for electromagnetic strength in neutron-halo nuclei

Details Effective-range approach and scaling laws for electromagnetic strength in neutron-halo nuclei Effective-range approach and scaling laws for electromagnetic strength in neutron-halo nuclei

2004-06-21

arxiv.org/abs/nucl-th/0406068v2

Phys.Rev.Lett. 93 (2004) 142502

Physics

Nuclear Physics

Nuclear Theory

4 pages, 1 figure (modified), additional table, extended discussion of example, accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.93.142502

We study low-lying multipole strength in neutron-halo nuclei. The strength depends only on a few low-energy constants: the neutron separation energy, the asymptotic normalization coefficient of the bound state wave function, and the scattering length that contains the information on the interaction in the continuum. The shape of the transition probability shows a characteristic dependence on few scaling parameters and the angular momenta. The total E1 strength is related to the root-mean-square radius of the neutron wave function in the ground state and shows corresponding scaling properties. We apply our approach to the E1 strength distribution of 11Be.

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