Incident beam current impact on space-charge retention in electron dynamitron irradiated polymethyl methacrylate
Source abstract
Abstract
Dielectric charging aboard spacecraft and satellites is a persistent and pressing issue in materials design and applications. This study investigated the effect of electron irradiation on charge trapping and leakage properties in polymethyl methacrylate, which is necessary for determining the maximum permissible fluence of radiation before the material is pushed beyond its breakdown threshold in charged particle radiation-intense environments. It was observed that dielectric breakdown in the form of an electrostatic discharge event cannot be induced under the conditions of this experiment after an amount of time that is dependent on initial electron fluence. This time limit for which an electrostatic discharge can be induced was found to be longer for the lower beam current irradiations. The work presented here discusses the factors affecting charge leakage using a global electric field-driven model.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: High voltage insulation and dielectric phenomena · Plasma Diagnostics and Applications · Electrostatic Discharge in Electronics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, USA
References (23)
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