Total Cross-section for the H(n,D)gamma Reaction At 39, 61, and 76 Mev

The total cross section for neutron-proton capture was measured at 39, 61, and 76 MeV neutron energy with a large signal-to-background ratio. Good agreement is obtained with recent photodisintegration measurements, thus providing a critical data basis for comparison with theoretical predictions. It appears that the electric dipole approximation is still a fair description of the data.