Ion mobility spectrometer

Details Ion mobility spectrometer Ion mobility spectrometer

1997-12-08

1999-12-07

Westin, Edward P.

Radiant energy

Ionic separation or analysis

Ion beam pulsing means with detector synchronizing means

250287, H01J 4940

Patent

active

05998788&

ABSTRACT:
In an ion mobility spectrometer (IMS), the essential parts, namely the ion gate, the drift chamber, and the ion collector, consist of pieces that are slice or wafer shaped, and are either anisotropically etchable or can be machined using micromechanical methods. The parts are held together by clamps, adhesives, or other known assembly methods. The drift chamber consists of two sliced pieces with a through groove being etched or milled in one of them. The groove is covered by the other smooth piece so that a drift channel is produced. The drift channel is closed at one end by a grid-shaped ion gate, which is similarly made from a sliced piece by etching or milling while the opposite end of the drift channel is closed by the ion collector, which is likewise made from a sliced piece that is electrically conducting on the inside.

REFERENCES:
patent: 4390784 (1983-06-01), Browning et al.
patent: 4633083 (1986-12-01), Knorr et al.
patent: 5789745 (1998-08-01), Martin et al.
patent: 5834771 (1998-11-01), Yoon et al.

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