Device for improved detection of ions in mass spectrometry
US10074529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2016 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Jan 29, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J43/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron multiplier is positioned relative to at least one dynode to direct a beam of secondary particles from the at least one dynode to a collector area of the electron multiplier and not to a channel area of the electron multiplier for a range of electron multiplier voltages applied by one or more voltage sources to the electron multiplier and for a dynode voltage applied by the one or more voltage sources to the at least one dynode. The electron multiplier includes an aperture with an entrance cone and walls of the entrance cone comprise the collector area and an apex of the entrance cone comprises the channel area. An electron multiplier voltage of the range of electron multiplier voltages is applied to the electron multiplier and the dynode voltage is applied to the at least one dynode using the one or more voltage sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.