Apparatus for preparing a sample for mass spectrometry

Details Apparatus for preparing a sample for mass spectrometry Apparatus for preparing a sample for mass spectrometry

1992-08-21

1994-05-10

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

With sample supply means

250282, 250423R, B01D 5944, H01J 4900

Patent

active

053110161

ABSTRACT:
An apparatus for preparing a sample for analysis by a mass spectrometer system. The apparatus has an entry chamber and an ionization chamber separated by a skimmer. A capacitor having two space-apart electrodes followed by one or more ion-imaging lenses is disposed in the ionization chamber. The chamber is evacuated and the capacitor is charged. A valve injects a sample gas in the form of sample pulses into the entry chamber. The pulse is collimated by the skimmer and enters the ionization chamber. When the sample pulse passes through the gap between the electrodes, it discharges the capacitor and is thereby ionized. The ions are focused by the imaging lenses and enter the mass analyzer, where their mass and charge are analyzed.

REFERENCES:
patent: 3895231 (1975-07-01), Sodal et al.
patent: 3992626 (1976-11-01), Bursack
patent: 4018241 (1977-04-01), Sodal et al.
patent: 4201913 (1980-05-01), Bursack et al.
patent: 4618774 (1986-10-01), Hascal et al.
patent: 4855594 (1989-08-01), Kimock et al.
patent: 4987345 (1991-01-01), Stromberg et al.

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