Method and apparatus for ion fragmentation by electron capture
US7612335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Dec 4, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0054
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method and apparatus for ion fragmentation by electron capture. The present invention provides a method of generating fragment ions by electron capture, comprising; directing ions to be fragmented into a fragmentation chamber of a mass spectrometer into a fragmentation chamber of a mass spectrometer arrangement; trapping at least some of the ions to be fragmented in at least one direction of the fragmentation chamber by using a magnetic field, the ions being trapped within a volume V; generating an electron beam using an electron source located away from the volume V; irradiating the trapped ions in the volume V with the electrons generated by the electron source in the presence of the said magnetic field, so as to cause dissociation; and ejecting the resultant fragment ions from the fragmentation chamber for subsequent analysis at a different location away from the fragmentation chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.