PROBING THE WEAKLY-BOUND NEUTRON ORBIT OF 31Ne WITH ONE-NEUTRON REMOVAL REACTIONS

A candidate of a neutron-halo nucleus, Ne-31, contains a single neutron in the pf shell. Within Glauber and eikonal models, we analyze reactions used to study Ne-31. We show in a Ne-30+n model that the magnitudes of the total reaction and above all of the one-neutron removal cross sections of Ne-31 on C-12 and Pb-208 targets strongly depend on the orbital angular momentum of the valence neutron, thereby providing efficient ways to determine the structure of Ne-31 ground state. We also show that elastic-breakup observables exhibit a strong dependence upon the orbital of the valence neutron.