An attempt has been made to find an
interaction between neutron and proton which will account for not only the
binding energy and quadripole moment of the deuteron and the low energy
scattering data, but also the results of the experiments on the scattering of
90 MeV. neutrons by protons. Three types of modification of the triplet
neutron-proton interaction have been used which embody the following features :
(1) A non-central potential of spherical
well form, whose radius of interaction is varied.
(2) A non-central potential whose form is
closer to that of the pseudo-scalar meson potential than the usual
Rarita-Schwinger form, but which does not possess the objectionable
singularities of the former.
(3) The inclusion of a large short-range
repulsion. In each case exchange forces of the usual types have been used. The
results obtained, like those of other workers in this field using different
forms of interaction, fail to agree with the high energy data.
Theory of low energy nucleon-nucleon scattering
