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The operation of millimeter-wave relativistic magnetrons is considered for devices of the traditional and the inverted design. The high-voltage, pulsed devices employ explosive emission of electrons in electric fields about (1÷5)·107 V/m near the emitting surface. The electric parameters like these allow magnetron generation with either polarity of the DC driving pulse, both in the traditional and...
The dynamics of charged particle beams emitted from a cathode into a ‘smooth’ coaxial diode with magnetic insulation (MICD) is studied with the aid of 3-D simulation. The processes controlling space charge formation and its evolution in the MICD are modeled for the structure geometries typical of high-voltage millimeter wave magnetrons1 that are characterized by very high values of emission currents,...
Aspects of design of a multi-sectional Tesla transformer (MTT) presented as a system with three primaries are discussed. Calculation and experimental characteristics of MTT, and its advantages (lower currents in the primary, higher efficiency together with lower duration of the period) in comparison with traditional TT are shown.
Current distribution in relativistic magnetron (RM) of 8-mm wavelength has been studied experimentally and with the help of 3D simulation. Existence of direct and return axial electron flows that sufficiently disturb to the RM operation is considered.
Experimental study of a Tesla transformer (TT), intended for high-voltage power supply of subrelativistic electron devices is carried out. Tuning technique of TT and obtained experimental data are considered.
Features of impulse reflectometry using sub-nanoseconds pulses are considered. Impacts of non-uniformities in the system to the measured signal parameters are analyzed. An algorithm for observed data processing that takes into account the test signal envelope and numerous reflections originating in non-uniform system is proposed.
Features of impulse reflectometry of the sub-nanosecond range are considered. The influence of parameters of a probing signal in the ultrabroadband nonuniform systems on the results of measurements is analyzed. An algorithm of processing of measurement data that allows accounting of the shape of the probing signal and numerous reflections, originating from nonuniform systems, is proposed.
The characteristics of measurements of parameters of impulses of the subnanosecond range in the coaxial waveguides by capacitive dividers of different type are considered. Advantages of application of dividers with partial integration and procedure of subsequent numerical restoration of initial impulse are showed.
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