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Sunlight Illumination Models for Spacecraft Surface Charging

Grey, S; Marchand, R; Ziebart, M; Omar, R; (2017) Sunlight Illumination Models for Spacecraft Surface Charging. IEEE Transactions on Plasma Science , 45 (8) pp. 1898-1905. 10.1109/TPS.2017.2703984. Green open access

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Abstract

A model is developed to compute solar illumination of satellite components while accounting for multiple reflections, variable surface properties, and illumination source size. This model is implemented in OpenCL and integrated with the particle in cell satellite-environment simulation code, PTetra, enabling kinetic simulations in which photoelectron emission resulting from direct illumination and multiple reflections is taken into account. Simulation results obtained with a simple “toy geometry” are used to illustrate the effect of multiple reflections on the net current density at a satellite surface, and on the surrounding space charge potential. Results for the Solar Orbiter spacecraft show a small change in the overall charging and charge distribution around the solar wind analyzer instrument.

Type: Article
Title: Sunlight Illumination Models for Spacecraft Surface Charging
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TPS.2017.2703984
Publisher version: https://doi.org/10.1109/TPS.2017.2703984
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Physics, Fluids & Plasmas, Physics, Photoemission (PE), reflectance, spacecraft charging, sunlight charging, RADIATION PRESSURE
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10076782
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