Axial ejection resolution in multipole mass spectrometers
US6703607B2 · kind B2 · utility
23Cited by
12References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | May 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved method of operating a mass spectrometer having a linear ion trap wherein ions are axially ejected from the trap to a detector or subsequent mass analysis stage. The DC barrier field produced at the exit lens of the trap is scanned in conjunction with the scanning of other fields used to energize ions of select mass-to-charge ratios past the barrier field/exit lens. The technique can maximize the resolution obtainable from axial ejection over a wide mass range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.