Ion mobility spectrometer and method of operating same
US8872102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2013 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ion mobility spectrometer instrument has a drift tube that is partitioned into a plurality of cascaded drift tube segments. A number of electric field activation sources may each be coupled to one or more of the plurality of drift tube segments. A control circuit is configured to control operation of the number of electric field activation sources in a manner that sequentially applies electric fields to the drift tube segments with a activation duration of at least one of the electric field activation sources different than that of the others to allow only ions having a predefined ion mobility or range of ion mobilities to travel through the drift tube. The drift tube segments may define a linear drift tube or a closed drift tube with a continuous ion travel path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.