Study of Particle-in-Cell Simulation for Explosive Emission Diode

The physical mechanism of explosive emission was analyzed. The conditions of emission and the formula to calculate the charge that would be drawn away from the cathode surface were educed based on the Yee model. Especially, discuss how to use the way of phenomenological description to realize particle-in-cell simulation in two-dimensional of explosive emission. Inward-emitting coaxial diode was used as an example to validate the corrections of simulation from current-voltage correlation and characteristic of electron beam movement.