Mass spectrometry apparatus
US5633496A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Mar 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/7233
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mass spectrometry apparatus which includes an ion source which ionizes a sample under atmospheric pressure and outputs the ionized sample, a differential pumping region, provided with apertures, for receiving under vacuum ions in the ionized sample from the ion source and outputting the ions and an ion accelerating and focusing region, having a plurality of ion accelerating electrodes each having applied thereto a voltage, for accelerating and focusing under vacuum the ions from the differential pumping region. The ions from the accelerating and focusing region are introduced under vacuum to a mass spectrometer which detects and analyzes the ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.