Method and apparatus of mass-correlated pulsed extraction for a time-of-flight mass spectrometer
US6518568B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A time-of-flight mass spectrometer includes a sample holder for a sample and an ionizer for ionizing the sample to form ions. A first element is spaced downstream from the sample holder, a second element is spaced downstream from the first element, and a drift region is downstream of the second element. An electric field is established between the sample holder and the first element at a time subsequent to ionizing the sample in order to extract the ions. A time-dependent and mass-correlated electric field is established between at least one of: (a) the first element and the second element, and (b) the sample holder and the first element. In turn, a detector detects the ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.