Analytical apparatus with variable energy ion beam source

Details Analytical apparatus with variable energy ion beam source Analytical apparatus with variable energy ion beam source

1975-02-13

1977-04-05

Smith, Alfred E.

Radiant energy

Ionic separation or analysis

250423R, B01D 5944, H01J 2700

Patent

active

040164217

ABSTRACT:
Disclosed herein is an analytical apparatus comprising a gas chromatograph, a mass spectrometer, and an interface connecting the two. The mass spectrometer comprises a variable energy ion beam source, a magnetic sector of substantially fixed magnetic field for deflecting the ions in the ion beam according to their momentum, and a detector for detecting those ions within the ion beams which have been deflected by a given angle by the magnetic sector. The variable energy ion source comprises a repeller electrode, a first low energy alignment electrode coacting with the repeller electrode to define an ion-forming region, an inlet means for introducing gas into the ion-forming region, means for forming an electron beam in the ion-forming region, a second high energy alignment electrode, and an entrance electrode separating the ion beam source from the magnetic sector. The repeller electrode is maintained at a constant potential relative to the first alignment electrode, the second alignment electrode is maintained at a potential more negative than but proportional to that of the first alignment electrode, and the first alignment electrode is maintained at a potential positive with respect to entrance electrode. By varying the potential of the first alignment electrode relative to the entrance electrode, the mass spectrum can be swept.

REFERENCES:
patent: 3155826 (1964-11-01), Peters
patent: 3461285 (1969-08-01), Werner
patent: 3633027 (1972-01-01), Ryhage
patent: 3849656 (1974-11-01), Wallington

Affiliated with

Also associated with

Rating

Analytical apparatus with variable energy ion beam source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analytical apparatus with variable energy ion beam source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analytical apparatus with variable energy ion beam source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2268088