Time of flight mass spectrometer
US7148473B2 · kind B2 · utility
4Cited by
8References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 31, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Dec 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a time of flight mass spectrometer (TOF-MS) of the present invention, a flight controller makes ions fly a loop orbit a predetermined number of turns, and an ion detector detects the ions at each turn of the flight. A flight time measurer measures the length of flight time of ions of a same mass to charge ratio at every turn, and a data processor constructs a spectrum of flight time. The data processor further computes the Fourier transformation of the spectrum, and determines the mass to charge ratio of the ions based on a frequency peak appearing in the Fourier transformation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.