Effect of exothermic reactions on the mobility of Ar

In this letter we present a cross-section set and transport properties for Ar+ scattering on CF4 for relative energies up to 1000 eV. Monte Carlo simulation method is applied to accurately calculate transport parameters in hydrodynamic regime. We present new data for Ar+ ions in CF4 as a function of reduced electric fields E/N (N-gas density) where the gas temperature $T_{\text{g}}$ is used as a parameter. Values of the reduced mobility are discussed. Discrepancy of reduced mobility for $T_{\text{g}}\rightarrow0$ and $E\rightarrow0$ from the polarization limit was previously theoretically considered but rarely measured especially in the presence of exothermic reactions. We find that internally resonant exothermic dissociative charge transfer cross-section for $\text{CF}_{3}^{+}$ production significantly increases zero-field ion mobility with respect to the polarization limit