Absolute total cross-section measurements for electron scattering from silicon tetrachloride, SiCl4, molecules

The absolute total cross-sections for electron scattering on SiCl4 molecule s have been measured in two distinct electron-transmission experiments, in Gdansk and in Trento laboratory, for impact energy ranging from 0.3 to 250 eV and from 75 to 4000 eV, respectively. The e(-)-SiCl4 total cross-section function shows two very distinct resonant-like features: the strong peak a t 1.9 eV and much broader main maximum centered near 10 eV with some additi onal substructure close to 5 eV. The present results are compared with low- energy total experimental data and elastic theoretical calculations for ele ctron collisions with silicon tetrachloride molecules.