The B-Spline R_matrix (BSR), Convergent Close Coupling (CCC), and UK R-Matrix software suites provide methods and algorithms to compute electron scattering cross sections and perturbative photo-electron cross sections from atomic and molecular targets. Process include excitation, ionization, photoionization and photodetachment in first order perturbation theory. The XChem and tRecX software suites extend the capabilities to time dependent, intense electromagnetic fields and enable studies of ultrafast processes in the UV and IR spectrum.
The codes are deployed on XSEDE HPC systems such as Comet, Stampede2 and Bridges.