Photoemission induced electron ionization

Details Photoemission induced electron ionization Photoemission induced electron ionization

H - Electricity

01

J

H01J 49/16 (2006.01) G01N 27/64 (2006.01) G01N 33/22 (2006.01) H01J 49/26 (2006.01)

Patent

CA 2738053

A monitor that can detect at least one molecule. The monitor includes a housing with a passage that can receive a sample, and a photocathode that is located within the housing. The monitor also includes a first ultraviolet light source that can direct ultraviolet light onto the photocathode to create electrons that ionize molecules within the sample, and a detector that is coupled to the housing to detect at least one ionized molecule. The monitor enables electron ionization (EI) of a sample for chemical analysis without the disadvantages of current methods that use a hot filament or other thermal cathode devices.

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