Sampling system for mass spectrometer

Details Sampling system for mass spectrometer Sampling system for mass spectrometer

1978-10-06

1980-05-06

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

With sample supply means

250289, B01D 5944, H01J 3934

Patent

active

042019133

ABSTRACT:
An apparatus for introducing a gaseous sample into a mass spectrometer is disclosed which includes a hollow antechamber or cavity disposed between the sample stream and the high vacuum enclosure. Orifice openings are provided in the antechamber which allow the antechamber to communicate both with the high vacuum enclosure and the sample stream. An electrically operated pulsed valve is used to admit a series of small volumes of sample by pulses of controlled duration and frequency such that the sample flow from the antechamber into the high vacuum enclosure can be made to resemble one of essentially constant flow.

REFERENCES:
patent: 3801788 (1974-04-01), Milne
patent: 3895231 (1975-07-01), Sodal et al.
patent: 3992626 (1976-11-01), Bursack
patent: 4023398 (1977-05-01), French et al.

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