Emission Spectra of Carbon Disulfide, Hydrogen Sulfide, and Thiols by Controlled Electron Impact

Abstract
The emission spectra in the 200–600 nm region produced by the controlled electron impact method were investigated in the vapor phase on hydrogen sulfide, carbon disulfide, methanethiol, and ethanethiol at low pressures. The photoemissions were observed and assigned for an excited parent molecule, molecular ions, and fragments, such as CS2, CS2+, H2S+, H, CH, CS, and HS+. The intensities of the photoemission of most of the species were found to increase linearly with both the electron beam current and the gas pressure, and these species were concluded to be produced in some one-electron unimolecular processes.