A black box Binary Encounter Bethe (BEB) with an effective core potential (ECP) procedure is implemented, which facilitates the efficient calculation of electron impact ionization cross sections for molecules that include heavy atoms. This available in Quantemol collisions software, a user friendly graphical interface to UKRMol+ codes. Tests were performed following series molecules: CF4, CCl4,...

Measurements of electron transport, effective ionization, and attachment coefficients are reported for C2F4' In addition, measurements of the electron drift velocity and the effective ionization coefficient as a function of the density-reduced electric field E/N are reported for mixtures of C2F4 with Ar. The measured effective ionization coefficients in C2F4/Armixtures indicates a contribution ...