The mobility of the clustered ion K+(H2O) has been measured in nitrogen at 305 K over theE/Nrange 5ndash;45 Td, by two methods using a drift tube without mass spectrometer. Nitrogen and water vapor pressures used were 3 to 28 Torr and 2 to 20 mTorr, respectively. It is found that the mobility is constant over theE/Nrange measured and the zerohyphen;field reduced mobility is 2.17plusmn;0.03 cm2/V s. This value is 10.0percnt; lower than the Langevin value. One of the methods provides a new experimental technique for obtaining an isolated arrival time spectrum for clustered ions from a composite one.
展开▼
