Reflected electron distribution on anode surface of vacuum gap during electron beam bombardment: experimental results

Author

Shostak, Volodymyr ; Yagodzinskyj, Vyacheslav

Author_Institution

Lab. of High Voltage Eng. & Electrophys., Kyiv Polytech. Inst., Ukraine

Volume

2

fYear

1996

fDate

21-26 Jul 1996

Firstpage

799

Abstract

Previously carried out analysis and simulation (see V.A. Shostak, 15th International Symposium on Discharges and Electrical Insulation, Darmstadt, Germany, p.726-9, 1992) of the reflection of an electron beam bombarding the anode through the hole in a cathode in vacuum gap (VG) with parallel electrodes and constant electrical field showed, that electrons distributions on anode surface have some peculiarities, in particular the availability of additional maximums and gradients, and dependence of their location and value on ratio of total beam energy and energy acquired by beam at VG. In this paper the results of experimental investigation of these distributions are presented (beam energy-15 keV, gap-40 mm, VG voltage-from 5 to 30 kV). In general, obtained results confirm qualitatively the peculiarities predicted by simulation

Keywords

anodes; cathodes; current distribution; electron beams; electron emission; vacuum breakdown; 15 keV; 40 mm; 5 to 30 kV; anode surface; beam energy; cathode hole; constant electrical field; electron beam bombardment; electrons distributions; parallel electrodes; reflected electron distribution; total beam energy; vacuum gap; Analytical models; Anodes; Cathodes; Charge carrier processes; Dielectrics and electrical insulation; Electrodes; Electron beams; Elementary particle vacuum; Optical reflection; Surface discharges;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on

Conference_Location

Berkeley, CA

Print_ISBN

0-7803-2906-6

Type

conf

DOI

10.1109/DEIV.1996.545473

Filename

545473