crossed-field multiplier phototube

crossed-field multiplier phototube

[′krȯst ‚fēld ‚məl·tə‚plī·ər ′fōd·ō‚tüb]
(electronics)
A multiplier phototube in which repeated secondary emission is obtained from a single active electrode by the combined effects of a strong radio-frequency electric field and a perpendicular direct-current magnetic field.