Electron multiplier

Contrasting differences between discrete and continuous electron multipliers.

An electron multiplier is a vacuum-tube structure that multiplies incident charges.[1] In a process called secondary emission, a single electron can, when bombarded on secondary-emissive material, induce emission of roughly 1 to 3 electrons. If an electric potential is applied between this metal plate and yet another, the emitted electrons will accelerate to the next metal plate and induce secondary emission of still more electrons. This can be repeated a number of times, resulting in a large shower of electrons all collected by a metal anode, all having been triggered by just one.

  1. ^ Allen, James S. (1947), "An Improved Electron Multiplier Particle Counter", Review of Scientific Instruments, 18 (10): 739–749, Bibcode:1947RScI...18..739A, doi:10.1063/1.1740838.

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