The instrumentation and practical circuitry required for the detection of negative ions exiting the mass analysis section of a mass spectrometer is examined. The potentials needed to bias the electron ...

I HAVE recently investigated the possibility of using the Townsend electron avalanche process in a gas in a stage-by-stage system to give a highly stable electron-multiplication factor, and have ...

IN an earlier communication 1, I have described the possibility of using an electron multiplier, based on the secondary emission principle, for the detection of individual electrons by cooling the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The electron multiplier is a type of ...