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arXiv · 1704.06032

Space-charge effect of the time-varying electron injection in a diode: classical and relativistic regimes

Yangjié Liu·Qi Tang·Biyi Wu
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Abstract

Conventionally, space-charge (SC) limited current density is defined as the maximal cur- rent density allowed to traverse a diode under a DC voltage when a time-invariant flow is injected from the cathode. In this work, we study the SC limited current density under a time-varying injection for both classical and relativistic regimes and determine the maxi- mal amount of limited current density under certain conditions. Our simulations show that it is unlikely that a time-varying injection emitted from cathode exceeds the known SC limits, in either classical or relativistic regime.

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Yangjié Liu, Qi Tang, Biyi Wu. 2017-04-20. Space-charge effect of the time-varying electron injection in a diode: classical and relativistic regimes. https://doi.org/10.1063/1.5000527

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