Asymptotic Normalization Coefficient Method For Two-Proton Radiative Capture

The method of asymptotic normalization coefficients is a standard approach for studies of two-body non-resonant radiative capture processes in nuclear astrophysics. This method suggests a fully analytical description of the radiative capture cross section in the low-energy region of the astrophysical interest. We demonstrate how this method can be generalized to the case of three-body 2p radiative captures. It was found that an essential feature of this process is the highly correlated nature of the capture. This reflects the complexity of three-body Coulomb continuum problem. Radiative capture O-15+p+p -> Ne-17+gamma is considered as an illustration. (C) 2020 The Author(s). Published by Elsevier B.V.