Deuteron photodisintegration near threshold

The deuteron photodisintegration observables, namely the angular distribution, the total cross section, the ratio (τ) of the photomagnetic and photoelectric components of the total cross section, the ratio of the differential cross section at forward and backward angles to that at 90 degree, the asymmetry function, and the nucleon polarization near threshold are calculated for several nucleon-nucleon potentials, and their variation with the gamma-ray energy is studied. In the calculations the meson exchange currents and relativistic effects are incorporated. Comparison with the available data is made. It is found that meson exchange currents and relativistic effects manifest themselves more prominently in τ and in nucleon polarization than in other observables