Title :
Microscopic and macroscopic material properties effects on ultraviolet-laser-induced flashover of angled insulators in vacuum
Author :
Enloe, C.L. ; Gilgenbach, Ronald M.
Author_Institution :
Dept. of Nucl. Eng., Michigan Univ., Ann Arbor, MI, USA
fDate :
6/1/1988 12:00:00 AM
Abstract :
Flashover of electrically stressed polymeric insulators in vacuum has been induced by ultraviolet radiation from an excimer laser (KrF). The authors present the results of an experiment which (1) quantifies the effects of ultraviolet illumination on polymeric insulators; (2) characterizes ultraviolet-induced flashover over insulators at positive and negative angles, and (3) correlates microscopic and macroscopic material properties to flashover behavior. A theory of ultraviolet-induced insulator flashover is developed, which explains the unexpected variation of flashover strength with geometry in view of the current understanding of flashover in vacuum
Keywords :
electric breakdown of solids; laser beam effects; polymers; KrF; UV laser induced flashover; angled insulators; electrically stressed polymeric insulators; excimer laser; flashover strength; geometry; macroscopic material properties effects; microscopic materials; negative angles; positive angle; ultraviolet illumination; ultraviolet-induced insulator flashover; vacuum; Dielectric materials; Dielectrics and electrical insulation; Electrons; Flashover; Geometry; Material properties; Microscopy; Plastic insulation; Polymers; Stress;
Journal_Title :
Plasma Science, IEEE Transactions on
