Photoprocesses for the 3H4He and 3He4He channels in the cluster   potential model
  Radiative capture in the 4He3H and 4He3He channels are considered for the 7Li and 7Be nuclei. The analysis is based on the corresponding two-cluster models. The potentials of cluster interaction include forbidden states and are made to be consistent with the phase shifts of elastic scattering at energies up to 20 MeV. Such an approach is shown to describe the total cross sections for photoprocesses over the entire energy region under consideration. 
S. B. Dubovichenko, A.V. Dzhazairov-Kakhramanov