Characteristics of Electron Beam Produced by Magnetron Diode with a Secondary-Emission Cathode

Pulse modulators for feeding powerful microwave devices based on magnetron guns with secondary-emission cathodes

“…The present pulse formation circuit was used to investigate the generation of powerful electron beams in the system comprising 8 magnetron injection guns with secondary-emission cathodes, where the in-beam pulse power of 2.5 MW was reached at a particle energy of~30 keV. In a single magnetron injection gun this power attained 5 MW at a particle energy of~100 keV [6,7].…”

“…Experiments by this method [6,7] were performed with single magnetron injection guns at different cathode/anode diameters for cathode voltage pulse amplitudes between 5 and 40 kV 0f 0.5 to 8 µs length and an anode voltage pulse amplitude between 2.5 and 15 kV with a fall time of 2 to 90 ns.…”

“…The investigation of magnetron guns with cold metallic cathodes, operating under secondary emission conditions in crossed electric and magnetic fields, have attracted widespread attention in recent years [1][2][3][4][5][6][7]. The general principle of operation of these guns is based on secondary-emission multiplication of electrons, generation of an electron cloud and electron beam generation [1,2,5] in crossed fields.…”