Spectrometer
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United States of America Patent
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Aug 10, 1993
Grant Date -
N/A
app pub date -
Mar 24, 1992
filing date -
Apr 1, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an ion mobility spectrometer comprising a spectrometer tube with an ionhutter, an ionization source within a reaction chamber, and a drift chamber, the improvement comprises providing in or around the said drift tube a plurality of conducting segments, across which an electric field is applied, the said conducting segments being separated from one another by insulating spacers, wherein the ratio between the width of the insulating spacers to the width of the conducting segments is between 2:1 and 1:1, preferably about 1.5:1.
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