MASS SPECTROMETER INLET WITH REDUCED AVERAGE FLOW Russian patent published in 2018 - IPC H01J49/04 

FIELD: physics.

SUBSTANCE: invention relates to mass-spectrometry. Interface is configured to transfer ions produced at or near atmospheric pressure conditions into a mass spectrometer for mass analysis. Interface includes a first conduit including an inlet configured to receive a fluid containing the ions and an outlet configured to direct the fluid containing the ions into the mass spectrometer. First conduit has a first flow path extending from the inlet to the outlet. Interface includes a pump. Interface includes a second conduit. Second conduit includes an inlet. Second conduit defines a second flow path extending from a location between the inlet and the outlet of the first conduit to an outlet of the second conduit. Pump is configured to divert a portion of the fluid including the ions moving in the first flow path to the second flow path.

EFFECT: simplify maintenance, and increase the life of the interface.

21 cl, 3 dwg