Primary electron emission definitions

primary electron emission

thermionic, photoelectric or field emission
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=111-14-50

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primary-electron emission

thermionic, photoelectric or field emission of electrons
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=531-12-07

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