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Excitation of gallium one-charged ion in e-Ga collisions

The excitation of a gallium single-charged ion in e–Ga collisions has been studied by the method of extended crossing beams with the registration of the optical emission of excited atoms. Sixty seven excitation cross-sections were measured at an exciting electron energy of 30 eV. Ten optical excitation functions (OEF) with electron energy from the excitation threshold to 200 eV have been recorded. The excitation cross-section dependency on the principal quantum number of upper levels has been considered for 8 spectral series of GaII. On the basis of the experimental results the total excitation cross-sections for 6 levels and summary cross-sections of cascade transitions for 11 levels have been calculated.