Intermediate coupling collision strengths from LS coupled R-matrix elements

Abstract

RMATRX1 is a general program to calculate atomic continuum processes using the R-matrix method, including electronatom and electron-ion scattering, and radiative processes such as bound-bound transitions, photoionization and polarizabilities. Calculations can be either in LS-coupling, or in an intermediate-coupling scheme by including terms of the Breit-Pauli Hamiltonian. This version supersedes all previous versions, is well-optimised, and contains many new and improved features.