Electron-impact excitation of atomic copper

Cross sections are calculated for excitation of Cu for elastic scattering of electrons from the 4s ground state and for excitation to excited states 3d94s2, 4p, and 4d. A three-state close-coupling approximation is used for the energy range 3.8 < E < 10 eV, and a four-state one for 6 < E < 100 eV. Accurate target functions are used in the expansion. Poor agreement is obtained with renormalized experimental data of Trajmar et al