A simple, self-consistent procedure is proposed to approximately calculate the exchange-Coulomb kernel in a resonating-group formulation. By applying this procedure to $\alpha +\alpha$, ${}_{}{}^3{}_{}{}^{}\mathrm{He}$+$\alpha$, and light ion plus ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ systems, it is found that satisfactory results can be obtained in all these cases.

NUCLEAR REACTIONS Scattering theory, exchange-Coulomb interaction.

• Received 1 May 1978

DOI:https://doi.org/10.1103/PhysRevC.18.1114