Patent ID: 6498343
Filing Date: 2002-12-24
Classification: G01N,H01J

Abstract:
An apparatus for providing a sample of charged molecules to a mass spectrometer, comprising:a first passageway having a center axis, and having an exit for discharging the sample in the form of an electrosprayed aerosol containing charged molecules; an electrically conductive housing maintained at a first potential and having an opening arranged adjacent to the first passageway exit; and a second passageway situated at least substantially within the housing and proximate to the opening in the housing, the second passageway having a center axis, an orifice for receiving at least a portion of the charged molecules from the first passageway, and an exit for providing the charged molecules to a mass spectrometer; wherein an angle formed between the center axis of the first passageway and the center axis of the second passageway is between about 75 degrees and about 105 degrees.