Mass spectrometer
US6835928B2 · kind B2 · utility
31Cited by
9References
103Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mass spectrometer is disclosed comprising a multi-mode quadrupole rod set. In a first mode of operation, the quadrupole rod set is operated as a mass filter to selectively transmit ions having desired mass to charge ratios to an ion detector. In a second mode of operation, the quadrupole rod set operates as a drift or time of flight region in which ions which have been pulsed into the drift or time of flight region become temporally separated according to their mass to charge ratios. In the second mode of operation, the ion detector determines the time of flight of ions passing through the quadrupole rod set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.