Time-of-flight mass spectrometer as the second stage for a tandem mass spectrometer
US5233189A · kind A · utility
13Cited by
3References
16Claims
0Family size
Inventor
Key dates
| Filing date | Mar 3, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Mar 3, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A time-of-flight mass spectrometer is disclosed that can be used as the second stage of a tandem mass spectrometer, a so called MS-MS system, for the mass analysis of molecule fragment ions. In this system it is foreseen that the precursor-molecule ion of a particular mass is fractionated in a dissociation medium where a start-time signal is formed at the time of the fractionation. The flight time in this time-of-flight mass spectrometer--and thus the masses of the molecule-fragment ions--are then determined from the arrival times of the individual fragment ions at some stop detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.