Compact aerosol time-of-flight mass spectrometer
US8648294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2007 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Aug 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Among other things, methods, systems, apparatus for performing on-the-fly apportionment are described. In particular, a mass spectrometry apparatus includes an ionization laser to produce a deionization laser beam. The apparatus also includes a particle beam path that receives aerosol particles and intersects the ionization laser beam at a location where aerosol particles are desorbed and ionized by the laser beam. The apparatus also includes an ion extractor located at or near the ionization location to separate positive ions and negative ions desorbed from the aerosol particles and to direct the positive ions along a first direction of an ion path and the negative ions along a second, opposite direction of the ion path. The apparatus also includes a first reflectron located at a first side of the ion extractor, on the ion path, to reflect the positive ions along a first reflection path that deviates from the ion path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.