Quadrupole mass spectrometer

Details Quadrupole mass spectrometer Quadrupole mass spectrometer

1974-12-13

1977-08-02

Church, Craig E.

Radiant energy

Ionic separation or analysis

With sample supply means

250292, 250427, H01J 3708

Patent

active

040398285

ABSTRACT:
In a quadrupole mass spectrometer enclosed by a high vacuum container and including an ionization chamber, a molecular beam radiator passing through the container and having an output opening for supplying the gas to be analyzed, and a cryopump arranged for receiving the molecular beam exiting from the output opening and serving as a radiation trap, the output opening of the radiator and the cryopump are disposed at the periphery of the ionization chamber preferably diametrically opposite one another.

REFERENCES:
patent: 3142752 (1964-07-01), Hamer
patent: 3313935 (1967-04-01), Bell
patent: 3418513 (1968-12-01), Elliott
patent: 3553451 (1971-01-01), Uthe
patent: 3770954 (1973-11-01), Davis
"A New Mass Spectrometer for Precision Measurement of the .sup.235 U .sup.238 U Ratio of UF.sub.6, " Brannee, Advances in Mass Spectrometry, vol. 2, Pergamon Press, 1962.

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