Measurements of electron transport coefficients in the 0.468% and 4.910% c-C4F8/Ar mixtures and pure c-C4F8

摘要

The electron drift velocity (W) and the product of the gas number density and the electron longitudinal diffusion coefficient (NDL) were measured in the ranges of E/N over 1.4-100 Td in the 0.468% C-C4F8/Ar mixture, 8-100 Td in the 4.910% C-C4F8/Ar mixture, and 170-1000 Td in pure c-C4F8, by using a double-shutter electron drift apparatus with variable drift length (1-10 cm). The measured electron transport coefficients in these mixtures indicated that the inelastic processes between electrons and the c-C4F8 molecules had a strong influence and the measured electron drift velocity in pure c-C4F8 showed substantial deviation from the reported results in the high E/N range. There are no measurements on NDL in pure c-C4F8. [References: 21]