Mass spectrometer
US6967323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Jun 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0481
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ion mass spectrometer comprising an ionization source for generating ions, a linear trap region for accumulation and dissociation of ions, and a time-of-flight mass spectrometer for mass spectroscopy of ions based on the flying time, and having a collision damping region introduced with a buffer gas for reducing the kinetic energy of ions ejected from the linear trap region and converting the ion packet into continuous beam and provided with plural electrodes for generating multipole electric fields in the inside between the linear trap region and the time-of-flight mass spectrometer, and having an ion transmission control mechanism for allowing or inhibiting incidence of ion from the linear trap region to the collision damping region between the linear trap region and the collision damping region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.