Answers are grounded in this paper and cite their sources.
A controlled pressure mass spectrometer for the study of ion-molecule collision processes is described. A pressure ratio of 200 to 1 can be maintained between the ion chamber and the analyzer tube by means of differential pumping. Ion beams of the sample gas undergo collision reactions with molecules of the same or other gases in the analyzer tube.
No takes yet. Share an insight, caveat, or question.
Wells et al. (1957) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: