Parameterization of nuclear reactions cross section using R-matrix theory

Abstract R-matrix theory is used for the determination of tabulated values related to nuclear cross sections of light elements. This is done in order to improve the quantitative study of those elements by ion beam analysis (IBA). We give the fitting procedure adopted for the determination of parameters related to cross section measurements. This has been applied to the 16 O(α, α) 16 O reaction in the energy range 2.9–3.6 MeV.