space-charge effect


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space-charge effect

[′spās ¦chärj i‚fekt]
(electronics)
Repulsion of electrons emitted from the cathode of a thermionic vacuum tube by electrons accumulated in the space charge near the cathode.
References in periodicals archive ?
Therefore, space-charge effects at the interface between small particles can result in substantial improvement of the electrical, magnetic, and optical properties [5-7].
The origin of this equation is not dipolar but can be due to the space-charge effects. The equation is written as:
Such oscillations in linear relativistic electron beams may be caused either by the formation of virtual cathodes (when an injected beam current exceeds the limiting current defined by space-charge effects) or by low-potential electrodes reflecting streaming particles.

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