Photoelectron source for use in a gas chromatograph detector and mass spectrometer ion source
US4476392A · kind A · utility
13Cited by
2References
32Claims
0Family size
Inventor
Key dates
| Filing date | Dec 28, 1981 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Dec 28, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ionization source is disclosed for use with mass spectrometers and electron capture species detectors having an ionization light source excited so as to illuminate a fluid sample which flows past the light source whereby electrons are photoelectrically generated by a light source. Means are also provided to accelerate the photoelectrons and to extract heavy ions generated by the accelerated photoelectrons from the fluid sample. Further means are provided to focus the extracted heavy ions so that they may be detected. Also included is a means to maintain a vacuum between the light source and the sample and the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.