Practical ion mobility spectrometer apparatus and methods for chemical and/or biological detection
First Claim
1. A drift tube for an ion mobility spectrometer comprising:
- a) at least one dielectric structure component of the drift tube; and
b) at least one ion guide electrode that is affixed on the dielectric structure or structures, wherein the ion guide electrode or electrodes are arranged in a helical shape around a drift axis of the drift tube, or a serpentine shape.
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Abstract
The present invention relates to drift tubes for ion mobility spectrometers. In one embodiment, the drift tube of the present invention uses a simplified design having helical resistive material to form substantially constant electric fields that guide ion movements. The drift tube for ion mobility spectrometers described herein is constructed with a non-conductive structure. This configuration provides a robust ion mobility spectrometer that is simple to build. One feature of the present invention is that the drift tube design described herein enables the ion mobility spectrometer to be built with a lower weight, lower power consumption, lower manufacturing cost, and free of sealants.
44 Citations
20 Claims
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1. A drift tube for an ion mobility spectrometer comprising:
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a) at least one dielectric structure component of the drift tube; and b) at least one ion guide electrode that is affixed on the dielectric structure or structures, wherein the ion guide electrode or electrodes are arranged in a helical shape around a drift axis of the drift tube, or a serpentine shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification