Ion mobility spectrometer with high ion transmission efficiency
US6727495B2 · kind B2 · utility
32Cited by
12References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/622
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ion mobility spectrometer comprising a drift tube having a central axis, along which a plurality of ring electrodes are arranged is provided. The plurality of ring electrodes provides a linear potential gradient along the central axis of the drift tube. In addition an RF voltage source coupled to the plurality of ring electrodes generates an oscillating RF potential within the internal region of each of the ring electrodes. The oscillating RF potential influences radial motion of the ions within the drift tube so that the ions remain within a radial space defined by the internal regions of the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.