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1. (WO2001035441) LONGITUDINAL FIELD DRIVEN FIELD ASYMMETRIC ION MOBILITY FILTER AND DETECTION SYSTEM

Pub. No.:    WO/2001/035441    International Application No.:    PCT/US2000/030921
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Sat Nov 11 00:59:59 CET 2000
IPC: H01J 49/42
Applicants: THE CHARLES STARK DRAPER LABORATORY, INC.
Inventors: MILLER, Raanan, A.
ZAHN, Markus
Title: LONGITUDINAL FIELD DRIVEN FIELD ASYMMETRIC ION MOBILITY FILTER AND DETECTION SYSTEM
Abstract:
An asymmetric field ion mobility spectrometer (10) with ionization source (18) for ionizing a sample media and creating ions. An ion filter (24) is disposed in the analytical gap downstream from the ionization source for creating an asymmetric electric field to filter the ions. An ion flow generator for creating an electric field in a direction (26) transverse to the asymmetric electric field and which propels the ions through the asymmetric electric field towards a detector (32).