Ion mobility spectrometer drift chamber
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United States of America Patent
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Jan 18, 1994
Grant Date -
N/A
app pub date -
Sep 16, 1992
filing date -
Sep 17, 1991
priority date (Note) -
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Abstract
The invention concerns a gas tight drift chamber of an ion mobility spectrometer with ring electrodes separated by insulating rings. In order to simplify the construction and to improve the mechanical and electrical stability, the ring electrodes have a z-shaped cross section, into which the insulating rings with the rectangular cross sections are fitted. Electrodes and insulating rings are connected is in a gas-tight manner. The high voltage divider consists either of individual SMD resistors which are soldered or vapor deposited to the outside or of a highly resistively coated ceramic rod.
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