Effects of Drift and Shutter Fields in Performance

Static and dynamic models for ion shutters were developed as a joint effort of computational models and experimental measurements for which electric fields were 

FIGURE 5.5 Mobility spectra for chloride anion as predicted (solid lines) as a function of gate width setting. The corrections for electrostatic repulsion to unite theory and experiment are shown by broken lines. (From Spangler and Collins, Peak shape analysis and plate theory for plasma chromatography, Anal. Chem. 1975. With permission.) 

FIGURE 5.6 Plots of ion count for (a) reactant ions as a function of electric field within the ion shutter E, at ambient temperature for the following values rectangles, 175 V/cm circles, 

225 V/cm triangles, 275 V/cm stars, 325 V/cm and diamonds, 375 V/cm and (b) when was normalized to corresponding drift fields E. (From Tadjimukhamedov et al., A study of the performance of an ion shutter for drift tubes in atmospheric pressure ion mobility spectrometry computer models and experimental findings. Rev. Sci. Inst. 2009. With permission.) 

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