Abstract
A new high-current (up to 25 kA at accelerating voltage of 10–35 kV) electron gun with plasma anode and explosive-emission cathode integrated with a planar pulsed powered magnetron is described. 189 copper wires of 1 mm in diameter and 15 mm in height serve as emitters. Emitters are installed on a stainless steel disc (substrate) with 5-mm distance between them. Planar magnetron is placed just behind the cathode substrate. Magnetron discharge plasma increases ion density on the periphery of plasma anode formed by high-current reflective (Penning) discharge ignited within several milliseconds after the start of magnetron discharge. The ion density increased on the periphery of plasma anode improves the uniformity of high-current electron beam. It was found that new electron gun can operate at working gas (argon) pressures of ∼0.06 Pa which is close to usual values. Preliminary results of testing show that proposed electron gun promises improved uniformity of the beam energy density distribution via its cross-section.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
