Noun
English Wikipedia has an article on:multipactor effectWikipedia
multipactor (plural multipactors)
(physics) An element of a radio-frequency amplifier that produces a resonant electronic discharge
Farnsworth reasoned that he could build an electrostatic plasma confinement system in which the "wall" fields of the reactor were electrons or ions being held in place by the multipactor. Source: Internet
However, Farnsworth had overcome his power problems with his Image Dissector through the invention of a completely unique "multipactor" device that he began work on in 1930, and demonstrated in 1931. Source: Internet
Unfortunately, a problem with the multipactor was that it wore out at an unsatisfactory rate. Source: Internet
Unfortunately it also led to high erosion on the electrodes when the electrons eventually hit them, and today the multipactor effect is generally considered a problem to be avoided. Source: Internet