Electromagnetic effects in light nuclei and the cluster potential model

Abstract

Photodisintegration and radiative capture in the N 2 H , N 3 H , N 3 He , 2 H 2 H , 2 H 3 He , 2 H 4 He , 3 He 3 H , 4 He 3 H , and 4 He 3 He channels are studied on the basis of the corresponding two-cluster potential models. The astrophysical S factors at low energies are calculated. It is shown that various electromagneticcharacteristics of light nuclei, including the Coulomb form factors at momenta of up to 4 F −1 , can be studied using a single set of intercluster interactions containing forbidden states and consistent with the phase shifts of the cluster low-energy elastic scattering. The calculated inelastic form factors have a second maximum at 3–4 F −1 , although it is lower than the experimental one. The orbital states are classified for the lightest cluster systems, and the phase shifts and intercluster potentials are separated on the basis of Young orbital schemes.