A Simulation Study of Multiplication Factor in Cylindrical Diode

Multiplication factor in a cylindrical diode has been studied using a 1d3v particle in cell simulation code for both inner cathode and outer cathode polarities. The simulation results are compared with a simple theoretical model. Simulations that are based on realistic cross sections are in qualitative agreement with the theoretical model. The disagreement between theoretical model and simulations is explained in view of the fact that in the simulation, realistic cross section is employed; however, the theoretical model is based on a simple ionization factor concept.