Atomic structure calculations using MCHF and BSR Original Research Article

Theoretical results of high accuracy can be obtained using B-spline R-matrix methods implemented in BSR codes. These require a description of targets and perturbers that include correlation. They can be computed efficiently using the multi-configuration Hartree–Fock (MCHF) program. This write-up describes the computational procedure for determining a variety of atomic properties by combining these two codes. Special attention is given to the calculation of transition probabilities for Rydberg series and to photoionization cross-sections.