Probing the weakly-bound neutron orbit of 31Ne with total reaction and one-neutron removal cross sections
Abstract
A candidate of a neutron-halo nucleus, 31Ne, contains a single neutron in the pf shell. Within the Glauber and eikonal models, we analyze reactions used to study 31Ne. We show in a 30Ne+n model that the magnitudes of the total reaction and above all of the one-neutron removal cross sections of 31Ne on 12C and 208Pb targets strongly depend on the orbital angular momentum of the neutron, thereby providing us with efficient ways to determine both the spin-parity and structure of the ground state of 31Ne. Besides these inclusive observables, we also calculate energy and parallel-momentum distributions for the breakup of 31Ne, and show their strong dependence upon the orbital of the valence neutron in the bound state of 31Ne.
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