Electron-Impact Spectrum of Mercury Vapor

Electron-impact spectra of mercury vapor have been investigated at incident electron energies between 50 and 300 eV. An intensity anomaly (expected from previous studies of atomic spectra) has been observed in the 61S0 → m1P1 series due to a perturbation by the 6p′ 1P state. Relative cross sections and oscillator strengths have been calculated from the intensity data at 300 eV and zero scattering angle.