Low-Energy Electron Scattering from c-C4F8

Abstract

Electron collision cross-sections of c-C4F8 were investigated at low energies by using the R-matrix method. The static exchange (SE), static exchange with polarization (SEP), and close-coupling (CC) models of the R-matrix method were used for the calculation of the scattering cross-section. The shape resonance was detected with all the models at around 3~4 eV, and a Feshbach resonance was detected with the SEP model at 7.73 eV, in good agreement with the previous theoretical calculation. The resonance detected was also associated with the experimental dissociative electron attachment of c-C4F8, which displayed the resonances at the same energy range. The cross-sections calculated are important for plasma modeling and applications.

R-matrix calculation electron collisions with HCN and HNC molecules

“…The Quantemol Electron Collision (QEC) expert system [22], which runs both MOLPRO [24] and the new version of the UK molecular R-matrix code UKR-Mol+ [23], was used here to study the electron scattering from HCN and HNC molecules. QEC has been successfully used for low-energy collision crosssection calculations for a variety of molecular targets [29,30]. Here Gaussian type orbitals (GTOs) are used to represent both the target electrons and the scattering electron.…”