Reagent gas control for an ion trap mass spectrometer used in th

Details Reagent gas control for an ion trap mass spectrometer used in th Reagent gas control for an ion trap mass spectrometer used in th

1992-02-26

1993-08-17

Dzierzynski, Paul M.

Radiant energy

Ionic separation or analysis

With sample supply means

250281, 250282, H01J 4904

Patent

active

052371751

ABSTRACT:
A reagent gas flow control system for use with an ion trap mass spectrometer is shown. The gas reagent gas flows from a source through a first gas flow restrictor connected to the inputs of second and third gas flow restrictors. The output of the second restrictor is connected to the ion trap where reagent gas is used, and the output of the third restrictor is connected to a vacuum pump, which may be the roughing pump used by the ion trap. At least one of the three restrictors is a variable restrictor. The configuration of the present invention allows the use of simple and inexpensive parts to provide exacting flow control.

REFERENCES:
patent: 2769912 (1956-11-01), Lupfer et al.
patent: 3700893 (1972-10-01), Seidenberg et al.
patent: 3943363 (1976-03-01), Amblard
patent: 3968675 (1976-07-01), Briggs
patent: 3997298 (1976-12-01), McLafferty et al.
patent: 4495414 (1985-01-01), Barrier et al.

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