Types of primary electrons sources for terahertz cold-cathode magnetron “firing”

In this communication, we have examined the primary electron sources for initiating the pulsed terahertz cold-secondary electron emission cathode SWMs. The capability of these sources emitting and injecting the required start up current is evaluated. The causes for an initiation delay and other factors associated with setting the steady oscillation mode at different side cathode currents are elucidated.