Compact mass spectrometer
US10424473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Aug 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionization source, a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. A first vacuum pump is arranged and adapted to pump the first vacuum chamber, wherein the first vacuum pump is arranged and adapted to maintain the first vacuum chamber at a pressure <10 mbar. A first RF ion guide is located within the first vacuum chamber and an ion detector is located in the third vacuum chamber. The ion path length from the atmospheric pressure sampling orifice or capillary to an ion detecting surface of the ion detector is ≤400 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.