Ionization of Carbon Disulphide by Electron Impact

Abstract

The ionization of C${\mathrm{S}}_2$ by electron impact has been studied. It has been found that the C${\mathrm{S}}_2^{+}$, C${\mathrm{S}}^{+}$, ${\mathrm{S}}^{+}$ and ${\mathrm{C}}^{+}$ ions are produced at 10.4±0.2, 14.7±0.5, 14.0±0.5 and 21.5±1.0 volts, respectively. The absence of ${\mathrm{S}}_2^{+}$ ions and the high appearance potential for ${\mathrm{C}}^{+}$ indicate a linear molecule. By raising the filament temperature free CS and ${\mathrm{S}}_2$ are produced and their I.P.'s determined as 10.6±0.3 and 10.7±0.3 volts. Heats of dissociation for various processes are deduced from the experimental data.