Abstract
The effective proton-neutron interaction in nuclei is approximated by an extreme short-range force with an ordinary and a spin-dependent component. This interaction is applied to several odd nuclei with two nucleons (or holes) outside of closed shells throughout the periodic table. Simple harmonic oscillator wave functions are used to evaluate the radial integrals. The interaction strength and the ratio of spin-dependent to ordinary force are determined empirically. It is found that the simple model reproduces the interaction with about 30% accuracy. It also indicates that a larger interaction constant should be used when the proton and neutron are in the same single-particle state than when they are in different states.
Published Version
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