Abstract.
The cathode design was developed. This cathode
provides a powerful pulse M-type device with a high repetition rate of
high-frequency pulses and a long duration of high-frequency pulse. The
developed design of the metal-ceramic cathode allows avoiding destruction of
the emission bushing due to its deformation caused by pulsed thermal load. The
problem of medium power removal from the cathode surface is solved. Dynamic
tests of the device with this cathode are carried out. In the first hours of
operation of the device, the area of stable operation at an anode current of
the device was 80%. After a sixteen-hour run, the stable area for the anode
current has decreased to 66% and stabilized. During
the further run at 150 hours and tests for switching cycles, no significant
changes in the operation of the device were recorded. This allows us to use
this design for the serial production of high-power pulse M-type devices.
Key words: cathode,
secondary emission, water-cooled cathode base, emitter, pulsed power.
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