Micro faraday-element array detector for ion mobility spectroscopy
US6809313B1 · kind B1 · utility
23Cited by
8References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 17, 2003 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Apr 3, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ion mobility spectrometer includes a drift tube having a collecting surface covering a collecting area at one end of the tube. The surface comprises a plurality of closely spaced conductive elements on a non-conductive substrate, each conductive element being electrically insulated from each other element. A plurality of capacitive transimpedance amplifiers (CTIA) adjacent the collecting surface are electrically connected to the plurality of elements, so charge from an ion striking an element is transferred to the capacitor of the connected CTIA. A controller counts the charge on the capacitors over a period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.