A Test Calculation on SF6 of Model Potentials for Correlation and Polarization Effects in Positron Scattering from Molecules

Low Energy Positron Scattering by F and F2

“…9−11 The theoretical studies on positron scattering by CF 4 are limited to the works of Baluja and Jain, 12 Gianturco and coworkers, 13−15 Marler et al, 16 and Barp and Arretche. 17 In the same spirit, SF 6 is an important molecule because of its use as a buffer gas in positron traps; 11 however, the only available theoretical studies for low energy positron collisions with this molecule are the works of Raj, 18 Lucchese et al, 19 and Sanchez et al 20 The knowledge about the positron scattering cross sections of such molecules and bigger ones could be improved through IAM and its variations 21 if a reliable set of positron-F cross sections were available. In the case of electrons, the scenario is slightly different.…”

“…Cross sections for the F atom can be useful in constructing high energy positron collision data for other molecules within an independent atom model (IAM) approach, as done previously for electrons. − In positron physics, CF 4 and SF 6 are two fluorinated molecules of great interest for positron cooling and trapping. − The theoretical studies on positron scattering by CF 4 are limited to the works of Baluja and Jain, Gianturco and coworkers, − Marler et al, and Barp and Arretche . In the same spirit, SF 6 is an important molecule because of its use as a buffer gas in positron traps; however, the only available theoretical studies for low energy positron collisions with this molecule are the works of Raj, Lucchese et al, and Sanchez et al The knowledge about the positron scattering cross sections of such molecules and bigger ones could be improved through IAM and its variations if a reliable set of positron-F cross sections were available. In the case of electrons, the scenario is slightly different.…”