Investigation of the instability of the intense helical electron beam formed in a gyroamplifierстатья
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Дата последнего поиска статьи во внешних источниках: 20 сентября 2013 г.
Аннотация:Different types of instability arising in the helical electron beam formed by the magnetron injector gun are investigated experimentally. It is shown that these instabilities affect spectral characteristics of the output radiation of the gyroklystron amplifier. The decrease in the starting current in the input cavity of the first drift tube of the gyroklystron due to a weak nonuniformity of the stationary guiding magnetic field is estimated. It is shown that a group of slow electrons located near the magnetic mirror and having a high pitch factor makes the major contribution to the self-excitation of the amplifier.