A COMBINED COMPUTATIONAL AND EXPERIMENTAL-STUDY OF THE TRIPLE IONIZATION OF CARBON-DISULFIDE

The newly developed technique of triple-charge-transfer spectrometry w as used to measure eight distinct triple-ionization energies of CS2 in the range 54-66 eV. A semi-empirical method was used to calculate the energies, and excellent agreement was obtained between measured value s and those calculated for triple ionization to quadruplet states of C S23+. consistent with spin conservation in the triple-electron-capture reactions of Cl2+ projectile ions with CS2 molecules. The lowest trip le-ionization energy measured is 54.3 +/- 0.5 eV, which is close to th e value 53.6 +/- 0.5 eV measured previously using the appearance-energ y method.