Abstract
Qualitative physical and chemical analysis of cold cathode magnetrons, field emitter activation process, and emission stabilization is described. The field emitter materials being presented are super thin films of Ta, Nb, W and their alloys and secondary electron emitters being presented by different kinds of emission active materials. Degradation processes of cold cathode magnetrons with field electron excitation are studied. Criteria for predicting of long (≳10 000 h) life, including individual life predictions are defined. Parameters of the lowest voltage state-of-the-art cold cathode magnetron with 7.5 and 5 kW pulse output power in 3 cm wavelength range are tabulated.
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