Static Field Mass Filter For A Mass Spectrometer
Patent No. EP3901984 (titled "Static Field Mass Filter For A Mass Spectrometer") was filed by Thermo Fisher Scientific Bremen on Mar 19, 2019. The application was issued on Feb 12, 2025.
Patent Summary
A static field mass filter for a mass spectrometer that maintains a constant electric field and contains a magnetic field, providing a flat transmission of ions across a selected mass-to-charge ratio range and minimizing unpredictable mass fractionations. The filter comprises two Wien filters with an inversion lens positioned between them, and a diaphragm with a specific aperture that separates ions based on their mass-to-charge ratio. The electric field is maintained at a constant level, while the magnetic field is adjusted to select ions of different masses. This design enables precise isotope ratio analysis with minimal systematic errors, particularly when combined with a reaction cell.
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Date
Description
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EP3901984
- Application Number
- EP21172424A
- Filing Date
- Mar 19, 2019
- Status
- Granted And Under Opposition
- Jan 10, 2025
- Publication Date
- Feb 12, 2025
- External Links
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