Method of operating a mass spectrometer and a mass spectrometer for carrying out the method
US4808818A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Apr 21, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is described for operating a mass spectrometer with a location-resolving detector. In this case, when an ion impinges on the detector, the instantaneous parameters of the analyzer are read and compared with a calibration table, and the instantaneous mass value (to be expected) is determined therefrom in the center of the detector. The location signal of the detector indicates the impingement location of the recorded event and is converted, via a second calibration table, into the deviation of the actual mass from the mean mass. The exact (actual) mass value is calculated from both values. This value is recorded in a memory of a computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.