1301.7145 (D. P. Snowden-Ifft et al.)

High Precision Measurements of Carbon Disulfide Negative Ion Mobility and Diffusion    [PDF]

D. P. Snowden-Ifft, J. -L. Gauvreau

High precision measurements were made of mobility, lateral and longitudinal diffusion of CS2 negative ions in 40 Torr CS2 and 30 - 10 Torr CS2 - CF4. The mobility was found to be be 363.1 +/- 0.5 Torr cm2 / s V in CS2 and 408.0 +/- 0.8 Torr cm2 / s V in the CS2 - CF4 gas mixture. The lateral diffusion temperatures for these two gases (295 +/- 15 K and 297 +/- 6 K) were found to be in good agreement with room temperature. By contrast longitudinal diffusion temperature was found to be slightly elevated (319 +/- 10 (stat) +/- 8 (sys) K and 310 +/- 20 (stat) +/- 6 (sys) K) though given the errors, room temperature diffusion can not be ruled out. For lateral diffusion significant capture distances (0.21 +/- 0.07 mm and 0.15 +/- 0.03 mm) were measured while for longitudinal diffusion the results were not conclusive.

View original: http://arxiv.org/abs/1301.7145