Energy systematics of the 1g [formula omitted], neutron hole state and isospin dependence of the nuclear potential

Abstract

Energies of 1g 9 2 neutron hole states in several nuclei with neutron numbers between 50 and 82 were measured by means of (p, d) reactions at a proton energy of 52 MeV. These data, together with available data from other studies, are used to obtain the systematics of the single-neutron binding energy of the 1g 3 2 neutron state as a function of neutron and proton number. The depths of a spherical Woods-Saxon potential which reproduce the experimental binding energies are obtained. An expression for the potential depth, which includes an isospin-dependent term, is assumed and the depth of the isospin potential is determined by a least-squares fitting procedure. The results are consistent with those for lighter nuclei obtained by Millener and Hodgson in a similar way.