Scattering of electrons by atomic systems with configurations (1s)2 (2s)2 (2p)6 (3s) 2 (3p)9

The close-coupling approximation has been used to compute cross sections for a wide range of processes (electron impact, photodetachment and photoionization). Errors in previous formulations have been pointed out and corrected. The results are compared with previous calculations and experiments and are correlated to recent work on the effects of configuration inter-action. A description of the computer code used is also given.