Ion mobility spectrometer uses unidirectional drift with larger dominant drift gas flow before detector electrode in separation area

摘要

Ion mobility spectrometer uses a unidirectional drift (5) and smaller cross section (6)ion (2) carrier (4) gas flow with a larger dominant drift gas flow (7) before a detector electrode (9) in the separation area (8) with auxiliary (10) and counter (11) electrodes placed to give field components at an angle to the flow and a dominant drift gas flow.