ION MOBILITY SPECTROMETER

摘要

Detection apparatus including an ionisation region (3), a gate (6), a drift chamber (7), an ionizer (5) for ionizing molecules of the substance and an arrangement (8, 20) for measuring the mobility of ions produced from the molecules, the apparatus including means for applying energy to the ions sufficient to modify selected ones of the ions that correspond to a range of ion mobilities. The invention also extends to a related method.