Method of preparing and reconditioning an electrode of mass spectrometer
US7119329B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | May 26, 2005 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | May 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/147
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a mass spectrometer, an ion of a sample gas is produced in an ion source by colliding the gas with an electron beam, and is introduced into a magnetic field or an electric field. The ion is separated based on the mass number, and the sample is analyzed from a mass spectrum. The ion source has an electrode made of stainless steel, which is baked at a temperature in a range from 200° C. to 700° C. in an air atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.