All ceramic ion mobility spectrometer cell

Details All ceramic ion mobility spectrometer cell All ceramic ion mobility spectrometer cell

1989-04-28

1991-06-04

Berman, Jack I.

Radiant energy

Ionic separation or analysis

Ion beam pulsing means with detector synchronizing means

250286, 250281, H01J 4940

Patent

active

050216546

ABSTRACT:
An ion mobility spectrometer is described for detecting sample gas in a carrier gas incorporating a block of ceramic material having a passageway wherein the passageway contains an ionization source, a resistive material on the walls of the passageway prior to and after a shutter grid to form a reaction region and drift region respectively, an aperture grid and a collector. A radioactive or non-radioactive ionization source may be inserted into one end of the passageway while the aperture grid and collector may be inserted into the other end and rigidly positioned with respect to the block of ceramic material. The invention simplifies the exchange of the ionization sources where it may be either radioactive or non-radioactive, and improves the assembling and sealing of the ion mobility spectrometer cell.

REFERENCES:
patent: 3370192 (1968-02-01), Schwartz et al.
patent: 4390784 (1983-06-01), Browning et al.
patent: 4633083 (1986-12-01), Knorr et al.
patent: 4712008 (1987-12-01), Vora et al.

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