Mobilities of HCN +·, H 2CN +, C 2N +, C 2N 2+· and C 2H 3N +· in helium at 293 K

Abstract

A drift tube incorporating a movable ion source for the measurement of ion transport properties and the study of ion/molecule interactions is described. The drift tube has the facility for variable gas temperature and an operating pressure range up to 5 Torr. Ion velocities and mobilities have been determined for HCN +·, H 2CN +, C 2N +, C 2N 2 +· and C 2H 3N +· in helium at 293 K for the E/N range 10–140 Td using dilute mixtures of HCN, C 2N 2, CH 3CN and CH 3NC in helium.