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Gas Delivery System For Mass Spectrometer Reaction And Collision Cells

  • US 20110210241A1
  • Filed: 02/22/2011
  • Published: 09/01/2011
  • Est. Priority Date: 02/26/2010
  • Status: Active Grant
First Claim
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1. A gas delivery system for a cell-based mass spectrometer, the gas delivery system comprising:

  • a. a mass flow controller having an input coupled to a gas source;

    b. a three-way valve having an input coupled to an output of the mass flow controller, a first output coupled to a vacuum system, and a second output; and

    c. a cell positioned inside a vacuum chamber of a mass spectrometer, the second output of the three-way valve being coupled to an inlet of the cell, the mass flow controller providing a gas to the cell that increases a pressure inside the cell relative to the pressure in the vacuum chamber.

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