Abstract：The two 3H+4He and 3He+4He fusion reactions at low energies are usually viewed as an approximate external capture process. We study the 4He(3H,γ)7Li and 4He(3He,γ)7Be reactions in a cluster model, which can take into account two- and three-body electromagnetic currents, using minimal substitution in the explicit momentum dependence of the two- and three-cluster interactions. Our main goal is to explore how the cross section of the low-energy 3H+4He or 3He+4He capture reactions depends on energy. The astrophysical S-factors for these reactions are calculated at very low energies. We construct the conserved realistic Argonne v18 for two nucleons and Urbana IX or Tucson-Melbourne three-cluster interactions, which are considered for calculation. We also calculate the binding energies and the structural properties of 3H+4He or 3He+4He systems. The binding energies are found to be ?37.72 (?36.32) MeV and ?39.35 (?37.43) MeV, with (without) three-body interactions for 7Be and 7Li, in satisfactory agreement with other theoretical results and experimental data, respectively.
. [J]. 中国物理快报, 2014, 31(1): 12101-012101.
H. Sadeghi, H. Khalili. Three-Body Calculation of the 4He(3H,γ)7Li and 4He(3He,γ)7Be Reactions and Structure of the 7Li and 7Be at Solar Energies. Chin. Phys. Lett., 2014, 31(1): 12101-012101.
2014, Vol. 31 
