Title :
The multiple beam electron gun with cold field-emission cathode made from glassy carbon
Author :
Shesterkin, V.I. ; Grigoriev, Yuri A.
Author_Institution :
Joint Stock Co. “Res. & Production Enterprise “Almaz”, Saratov, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
The results of experimental research of 19-beam electron gun with the multiple-tip field emission cathode are presented. A single mini-gun is formed from the cylindrical mini cathodes which diameter is 270 μm with array of microtips on face of cylinder. These mini cathodes are aligned to the holes of grid and anode with diameter of 500 μm. The current beam emission of 94 mA is observed behind the anode hole at voltage of 6500 V. A current densities on cathode and in electron beam behind the anode are 13.2 and 4.4 A/cm2 respectively.
Keywords :
cathodes; current density; electron beams; electron guns; beam electron gun; cold field-emission cathode; current 94 mA; current density; cylindrical mini cathodes; glassy carbon; microtips array; multiple-tip field emission cathode; size 270 mum; size 500 mum; voltage 6500 V; Anodes; Cathodes; Current density; Electron beams; Electronic mail; Graphite;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2014 Tenth International
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-5770-5
DOI :
10.1109/IVESC.2014.6892077
