Soft dipole mode in $^{11}$Li and three body continuum

Details Soft dipole mode in $^{11}$Li and three body continuum Soft dipole mode in $^{11}$Li and three body continuum

1994-07-06

arxiv.org/abs/nucl-th/9407011v1

Physics

Nuclear Physics

Nuclear Theory

Presented by A.M.Shirokov as a talk at the Conference 'HALO-94' (Copenhagen, January 1994). LaTeX, 13 pages including 3 figure

Scientific paper

Properties of the neutron rich $^{11}$Li nucleus are calculated in the framework of the cluster model $^{9}$Li $+n+n$. The formalism of the harmonic oscillator representation of the scattering theory is used for the description of bound and continuum spectrum states in the three-body-democratic-decay approximation. It is shown that this approach allows one to take into account adequately the long asymptotic tail of the $^{11}$Li wave function ({\em neutron halo}) and to reproduce correctly the binding energy, radius and $^{11}$Li electromagnetic dissociation cross-section on target nuclei. The shape and the energy position of the $B(E1)$ peak corresponding to the soft dipole mode are also in agreement with experiment.

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