Dual field multipole converging ion guides, hyperbolic ion guides, and related methods
US9449804B2 · kind B2 · utility
3Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Nov 11, 2014 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Nov 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ion guide generates a first RF field of Nth order where N is an integer equal to or greater than 2, and a second RF field of 2Nth order superimposed on the first RF field. The first and second RF fields may be generated by respective first and second sets of electrodes. Another ion guide may include a converging entrance section followed by an exit section. The converging section may have a hyperbolic profile. A hyperbolic profile may be presented by electrodes having a twisted configuration relative to an ion guide axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.