Electron swarm parameters in C2H4 - measurements and kinetic calculations

The electron swarm parameters (bulk drift velocity, bulk longitudinal component of the diffusion tensor, and effective ionization frequency) in C2H4 (ethylene) are investigated for a wide range of the reduced electric field by means of measurements and kinetic calculations. The dataset contains results of measurements in a scanning drift tube apparatus under time-of-flight conditions as well as of kinetic swarm calculations, using solutions of the electron Boltzmann equation and Monte Carlo simulations. In addition to the bulk drift velocity, bulk longitudinal component of the diffusion tensor, and effective ionization frequency, results of the flux drift velocity, bulk transversal component of the diffusion tensor, and effective steady-state Townsend ionization coefficient are given.