High duty cycle trapping ion mobility spectrometer
US9304106B1 · kind B1 · utility
9Cited by
7References
20Claims
0Family size
Inventors
Key dates
| Filing date | Feb 5, 2015 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Feb 5, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a trapping ion mobility analyzer and methods for operating the ion mobility analyzer. The trapping ion mobility analyzer comprises an RF field for radially confining ions along an axis, a region with an axial electric DC field and a gas flow along the axis counteracting the electric DC field in the region, wherein the region either comprises a rising edge with an increasing axial electric DC field or a falling edge with a decreasing axial electric DC field and wherein the slope of the electric field strength along the axis is not constant at a substantial portion of the edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.