Cycloidal mass spectrometer and ionizer for use therein

Details Cycloidal mass spectrometer and ionizer for use therein Cycloidal mass spectrometer and ionizer for use therein

H - Electricity

01

J

H01J 49/26 (2006.01) H01J 49/28 (2006.01)

Patent

CA 2156072

A cycloidal mass spectrometer having a housing (2) which defines an ion trajectory volume (4) an electric field generator for establishing an electric field within the ion trajectory volume (4) and an ionizer (8) for receiving gaseous specimens to be analyzed and converting the same into ions which travel through magnetic fields and impinge upon a collector (12). The spectrometer is designed to have a plurality of ions of different mass to charge ratios impinging on the collector (12) generally simultaneously. A processor (16) determines the mass distribution of the ions impinging upon the collector (12). A plurality of electric field plates (20, 22, 24, 26) are electrically insulated from each other and be sealed so as to define the ion trajectory volume (4), an assembly of electric field plates (20, 22, 24, 26) are disposed within a vacuum enclosure. A miniature ionizer (8) preferably has a miniature filament (65). The cycloidal mass spectrometer and ionizer (8) may be miniatured.

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