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Energetic electrons directed toward an insulating target material penetrate to the interior where they progressively loose their energy through multiple atomic collisions and eventually come to rest. They therefore cause an internal charge deposition with spatial distribution largely associated with their entrance energy. An investigation of the charge deposition caused by 2 MeV incident energy electrons...
The measurement of volume charges within solid insulators provides needed information important to the evaluation of dielectric performance and the modelling of breakdown processes. Furthemore, electrical insulation such as polyethylene can be crosslinked with penetrating electron irradiation and thus be exposed to charge injection. While polyethylene is a widely used dielectric material, especially...
The penetration of energetic electrons into materials is an important fundamental process which is useful in understanding radiation effects, such as crosslinking, and also in evaluating damaging effects from charge accumulation such as in spacecraft charging. While energy deposition is well known by traditional dose measurement methods, there is relatively little experimental information about net...
Partial discharges (PDs) are a useful diagnostic in high voltage apparatus, and their measurement has been greatly improved with the application of advanced pulse height measurement equipment. The interpretation of PD signatures is important to insulation analysis in highly stressed apparatus such as power transformers, cables, and capacitors.
A series of controlled experiments using injected electron space charge layers has been used to study discharge propagation. This experimental technique is unique in its ability to investigate discharges where equipotential surfaces are not the major sources of the field but rather space-charge clouds provide the driving force.
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