Magnetic insulation of a space-charge d

We report experimental results of magnetic insula a low energy vacuum diode with ferroelectric cath the high current densities are measured well abo diode is shown to be insulated by a relatively low voltage. A model which accounts for the two-dim has been developed and it reveals the microsc dominated vicinity of the cathode, electrons leav anode ring, along a trajectory that is parallel to the JOURNAL OF APPLIED PHYSICS VO