UV-LED ionization source and process for low energy photoemission ionization
US8362445B2 · kind B2 · utility
8Cited by
10References
32Claims
0Family size
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Key dates
| Filing date | Mar 30, 2011 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jun 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/147
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A UV-LED photoemission ionization source and process are disclosed that provide ionization of analytes including volatile molecular species and organic residues for detection with various ion analyzers. The UV-LED source produces low-energy UV light (200 nm to 400 nm) that yields photoemission electrons from various conducting surfaces. These photoemission electrons provide direct and indirect ionization of analytes including trace organic residues without need of high electric fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.