Collection of ions
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United States of America Patent
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Dec 18, 2001
Grant Date -
N/A
app pub date -
May 7, 1999
filing date -
May 8, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The apparatus and method provide an improved technique for detecting ions as the area from which ions are attracted to a detector is increased, consequently increasing the number of ions detected. This is achieved by providing the outer electrodes of the detector connected to the electrical potential, together with alternate intermediate electrodes. The other intermediate electrodes and preferably the housing are grounded. The technique renders such detection techniques more sensitive and gives them a lower threshold at which they can function.
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