GAS DIFFUSER ION INLET

摘要

In some embodiments, a gas diffuser for use in a mass spectrometer is disclosed that can provide a controlled expansion of an ion-containing gas so as to reduce gas velocity for entry into subsequent stages of the mass spectrometer, e.g., a mass analyzer. In some embodiments, the controlled expansion of the gas is provided by flowing the gas through a channel whose cross-sectional area change, e.g. progressively increases, in the direction of the gas flow so as to provide controlled expansion of the gas.

主权项

1. A gas diffuser for use in a mass spectrometer, comprising:
an input aperture for receiving a flow of a gas; and a gas flow conduit extending from said input aperture to an exit aperture, said gas flow conduit comprising a first gas flow channel in fluid communication with a second flow channel exhibiting an increasing cross-sectional area in a direction of said exit aperture so as to cause controlled expansion of the gas flow from said input aperture to said exit aperture.