CPC H01J 49/107 (2013.01) [H01J 49/0072 (2013.01); H01J 49/0468 (2013.01); H01J 49/0495 (2013.01); H01J 49/26 (2013.01)] | 7 Claims |
1. A method of delivering reagent ions to a mass spectrometer, comprising steps of:
providing a first flow of carrier gas to a reservoir of a first reagent material to produce a flow of entrained first reagent vapor;
directing the entrained first reagent vapor flow to a first inlet of a mixing junction through a first flow restrictor;
providing a second flow of carrier gas to a second inlet of the mixing junction via a first variable pressure regulator and a second flow restrictor;
combining the entrained reagent vapor flow and the second carrier gas flow in the mixing junction;
directing the combined gas flow to a first inlet of a reagent transfer junction through a third flow restrictor;
transporting the combined gas flow from an outlet of the reagent transfer junction to an ionizer; and
controlling an output pressure of the first variable pressure regulator to produce a desired flow rate of first reagent vapor to the ionizer.
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