Title :
Charging Control on Alumina Surface in Vacuum by Surface Roughness and Electric Field Distribution
Author :
Hosono, Takafumi ; Kato, Katsumi ; Morita, Ayumu ; Okubo, Hitoshi
Author_Institution :
Nagoya Univ.
Abstract :
In this paper we investigated charging characteristics in vacuum on surface roughness of alumina and electric field distribution. The alumina insulator was placed between electrodes, and the surface charge due to field electron emission and secondary electron emission was generated. From measurement result, we quantitatively discussed charge polarity and charge density on the surface for various types of electric field distribution. Finally, we could successfully propose concept of charging control on alumina insulator in vacuum
Keywords :
alumina; electric field measurement; field emission; secondary electron emission; surface charging; surface roughness; alumina insulator; alumina surface; charge density; charge polarity; charging control; electric field distribution; field electron emission; secondary electron emission; surface roughness; Charge measurement; Current measurement; Density measurement; Electric variables measurement; Electrodes; Electron emission; Insulation; Rough surfaces; Surface charging; Surface roughness;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2006. ISDEIV '06. International Symposium on
Conference_Location :
Matsue
Print_ISBN :
1-4244-0191-7
DOI :
10.1109/DEIV.2006.357244
