RF ion guide
US10475633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2014 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Jun 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/426
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mass spectrometer is provided having an ion source for generating ions from a sample in a high pressure region, a first vacuum chamber having an inlet aperture, and an exit aperture. The at least one ion guide can be between the inlet and exit apertures and can include an entrance end and an exit end. The at least one ion guide can have a plurality of electrodes arranged around a central axis defining an ion channel, each of the plurality of electrodes being tapered, a planar surface of each of the plurality of tapered electrodes facing the interior of the at least one ion guide, and the surface gradually being narrowed and tilted inward to provide a smaller inscribed radius at the exit; and a power supply for providing an RF voltage to the at least one ion guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.