Statistics – Applications
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996esasp.392..129s&link_type=abstract
Environment Modelling for Space-based Applications, Symposium Proceedings (ESA SP-392). ESTEC Noordwijk, 18-20 September 1996. E
Statistics
Applications
Scientific paper
Bulk charging of spacecraft insulating materials is a very complex phenomenon. Depending on the fluence of the primary electrons and the conductivity of the dielectric, charges may accumulate, which can lead to internal discharge, which in turns may damage sensible electronic circuits. A quantitative knowledge of the charge build-up is essential in order to eliminate these problems in the design stage. Some computer codes exists simulating the particle transport (for instance the ESA-DDC Deep Dielectric Charging code). However these are often very tedious to operate and do not offer a practical engineering specification. This paper is an attempt to derive such a practical engineering specification. A parametric study mainly based on runs of the ESA-DDC code has been performed deriving a functional dependence of the internal electric field of a single dielectric layer behind a conducting shield on:
The electron spectrum The dielectric material density, thickness and conductance The shield density and thickness The grounding situation
As a result a practical engineering specification of the internal charging resulting from a certain spectrum has been derived.
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