Ion lens assembly for gas analysis system

Details Ion lens assembly for gas analysis system Ion lens assembly for gas analysis system

1997-07-11

1998-12-15

Nguyen, Kiet T.

Radiant energy

Ion generation

Field ionization type

250288, H01J 3708

Patent

active

058500847

ABSTRACT:
A miniaturized ion source for a mass spectrometer includes a anode and a focus plate whose interior surfaces form an ionization volume for a retained gas sample. Molecules of the gas sample are ionized by electrons, and the resulting ions are concentrated and converged through an exit aperture in the focus plate to the entrance of an ion analyzer, such as a quadrupole mass filter. Preferably, at least one of the anode and the focus plate includes a curved interior surface which converges the formed ions into a focused beam for directing into the ion analyzer. In addition, the thickness of the exit aperture of the focus plate and or the setback of the focus plate relative to the anode ensures that no line of sight exists between the interior surface of the anode from which ion-forming electrons can scatter into the adjacent ion analyzer.

REFERENCES:
patent: 4303865 (1981-12-01), Swingler

Affiliated with

Also associated with

Rating

Ion lens assembly for gas analysis system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ion lens assembly for gas analysis system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion lens assembly for gas analysis system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1460628