High pressure MS/MS system
US6093929A · kind A · utility
44Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1998 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Apr 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4285
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mass spectrometer system in which ions are mass selected in an RF-only quadrupole at relatively high pressure (1 to 7 torr) using FNF or SWIFT, and are then fragmented in a following collision cell which is in the same vacuum chamber, thus reducing pumping needs. The fragments can be mass analyzed in any desired way, including by another RF-only quadrupole in the same vacuum chamber and also using FNF or SWIFT. Triple MS can be performed in the same way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.