A fit to deuteron photodisintegration data up to 200 MeV using the Nijmegen 1993 potential

Abstract

We use our model of deuteron photodisintegration to calculate the reaction observables and to compare the theoretical results with the experimental data up to 200 MeV photon lab energy. The 1993 version of the Nijmegen potential is used to calculate the deuteron and continuum wavefunctions, and the parameters which control the 1πE, Δ and 1 pE contributions are fixed at values obtained earlier by fitting a selected set of cross section data. The data for the forward and backward cross sections and for the total cross section are fitted very well, as are the data for polarisation observables. Difficulties remain with the differential cross section data between 80 and 200 MeV, but these may result from the poor quality of the data. New measurements are urgently needed in this energy region.