Mass spectrometer
US8153960B2 · kind B2 · utility
24Cited by
1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2006 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Oct 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4235
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ion guide or ion trap (1) is disclosed having an entrance electrode (2) and an exit electrode (3). The potential of the exit electrode (3) is periodically dropped for a relatively short period of time allowing some ions to escape from the ion guide or ion trap (1) via an aperture in the exit electrode (3). The period of time that the potential of the exit electrode (3) is dropped for is progressively increased and ions emerge from the ion guide or ion trap (1) in a mass to charge ratio dependent manner. The ion guide or ion trap (1) may be operated as a mass separator or low resolution mass analyser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.