Photoelectron source for use in a gas chromatograph detector and

Details Photoelectron source for use in a gas chromatograph detector and Photoelectron source for use in a gas chromatograph detector and

1981-12-28

1984-10-09

Smith, Alfred E.

Radiant energy

Ion generation

Field ionization type

250423P, 250427, 250288, H01J 2720, H01J 2724, H01J 4910, H01J 4914

Patent

active

044763921

ABSTRACT:
An ionization source is disclosed for use with mass spectrometers and electron capture species detectors having an ionization light source excited so as to illuminate a fluid sample which flows past the light source whereby electrons are photoelectrically generated by a light source. Means are also provided to accelerate the photoelectrons and to extract heavy ions generated by the accelerated photoelectrons from the fluid sample. Further means are provided to focus the extracted heavy ions so that they may be detected. Also included is a means to maintain a vacuum between the light source and the sample and the detector.

REFERENCES:
patent: 3902064 (1975-08-01), Young
patent: 4377749 (1983-03-01), Young

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