Title :
Charging characteristics on dielectric surface by different charging processes in vacuum
Author :
Yamano, Y. ; Ohashi, A. ; Kato, K. ; Okubo, Hisanori ; Hakamata, Y.
Author_Institution :
Nagoya Univ., Japan
fDate :
8/1/1999 12:00:00 AM
Abstract :
This paper describes charging characteristics on a dielectric surface in vacuum by electron irradiation and field emission by a triple junction under negative and positive DC HV applications. The authors measured the 2-D distribution of electrostatic charging on a dielectric surface in situ. Experimental results revealed that the negative charge distribution caused by the electron beam had a conical shape over the whole surface. On the other hand, for a triple junction, it was an acute distribution around the triple junction. Moreover, they quantitatively investigated the difference of the 2-D charging distribution, using certain shape parameters, between the two charging processes mentioned above. In addition, they examined the time decay characteristics of the surface potential on the dielectric in vacuum
Keywords :
dielectric materials; electric charge; electron beam effects; electrostatics; field emission; surface charging; surface potential; 2-D charge distribution; DC HV applications; charging processes; dielectric surface charging characteristics; electron irradiation; field emission; negative charge distribution; shape parameters; time decay characteristics; triple junction; vacuum; Conductivity; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Electron beams; Electron emission; Electrostatic measurements; Probes; Shape; Surface charging;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
