Compact ionization source
US7507972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2005 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Apr 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T19/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact ionization source includes first and second electrodes, each having a plurality of fingers that are interdigitated with each other. The spacing between the first and second electrode, preferably less than 1 mm, creates a large electric field when a potential is applied across the first and second electrodes. The large electric field creates an ionization volume between the fingers of the first and second electrode and ionizes a portion of the molecules occupying the ionization volume. The interdigitated fingers of the first and second electrodes allow for a narrow gap separating the electrodes while presenting a large flow area for ionizing molecules for downstream analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.