Discharge ionization detector
US4789783A · kind A · utility
23Cited by
12References
4Claims
0Family size
Inventor
Key dates
| Filing date | Apr 2, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Apr 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/642
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A discharge ionization detector has a detector body with first and second chambers and an interconnecting aperture passageway. A glow discharge emission in the first chamber is directed through the aperture to cause ionization of column effluent species in the second chamber. A polarizing electrode creates an electric field to cause acceleration of ionized species toward a collector electrode coupled to an electrometer. The detector body is of an electrically-conductive material and is coupled to ground potential to reduce entry of glow discharge-produced electrons into the second chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.