Electron-impact excitation of the S∘, P∘, and D∘ doublet levels of cobalt atoms

The excitation of transitions from the 2S∘, 2P∘, and 2D∘ levels of the cobalt atom is studied by the method of extended crossing beams. Seventy-six excitation cross sections are measured at an exciting electron energy of 50 eV. Nine optical excitation functions are recorded in the electron energy region of 0–200 eV. Possible channels of excitation of levels under study are discussed.