Quadrupole ion trap with electronic shims
US6608303B2 · kind B2 · utility
16Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Sep 2, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/067
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a quadrupole ion trap mass spectrometer of the type having a plurality of ring electrodes and defining a trapping volume. The quadrupole potential faults arising from apertures in the electrodes are corrected by an apertured shim electrode placed within and spaced from the walls of the electrode apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.