Electron affinities of states of Sc and Cu

With this work, we begin our treatment of the transition metal electron affinities. A procedure, REDUCE, for reducing the number of parental couplings per configuration present in the first order wave function from as many as 100 to only a few is introduced. Progress toward a comprehensive relativistic-correlation theory is discussed. Several states in Sc− were examined but none were found to be bound. Two new bound states were obtained for Cu−: 3d9 4s 4p2 5D and 3d8 4s 4P3 7F0, with electron affinities 0.109 and 1.052 eV, respectively.