二硫化碳负离子迁移率和扩散的高精度测量
High Precision Measurements of Carbon Disulfide Negative Ion Mobility and Diffusion
摘要：
高精度测量了40 Torr CS2和30 - 10 Torr CS2 -CF 4气体混合物中CS2-负离子的降低迁移率、横向和纵向扩散。在STP下，CS2中的折合迁移率为353.0 +/- 0.5 cm^2 Torr / s V，CS2 -CF 4气体混合物中的折合迁移率为397.4 +/- 0.7 cm^2 Torr / s V。这两种气体的横向扩散温度（295 +/- 15 K和297 +/- 6 K）被发现与室温非常一致。相比之下，发现纵向扩散温度略微升高（319 +/- 10（stat）+/- 8（sys）K和310 +/- 20（stat）+/- 6（sys）K），尽管给出了误差，但不能排除室温扩散。对于横向扩散，测量了显著的捕获距离（0.21 +/- 0.07 mm和0.15 +/- 0.03 mm），而对于纵向扩散，结果并不确定。
英文摘要：
High precision measurements were made of reduced mobility, lateral and longitudinal diffusion of CS2- negative ions in 40 Torr CS2 and a 30 - 10 Torr CS2 - CF4 gas mixture. The reduced mobility was found to be 353.0 +/- 0.5 cm^2 Torr / s V in CS2 and 397.4 +/- 0.7 cm^2 Torr / s V in the CS2 - CF4 gas mixture at STP. 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.
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