Zur Theorie der Photospaltung des Deuterons bei mittleren Energien

The differential cross-section for the photo-disintegration of the deuteron has been calculated on the basis of a phenomenological theory for energies up to 80 MeV, assuming the validity of Siegert's theorem. We have used the Hulth'en wavefunction with a 4% D-state admixture for the ground state. The final state potential has been approximated by a square-well of a given radius, the depth of which has been calculated from the phase-shifts given by Marshak. For both the ground state and the final states a hard-core of radius 0,4 · 10^?13 cm is introduced. We have considered only the electric and magnetic dipole transitions. For the isotropic term we have obtained a fairly constant value which agrees, with the experimentally observed energy-dependence but is about 20% smaller than the experimental value. The coefficient of the sin² Θ-term agrees well with the experimental results.