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A Solar Cycle of Spacecraft Anomalies Due to Internal Charging : Volume 20, Issue 7 (30/11/-0001)

By Wrenn, G. L.

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Book Id: WPLBN0004001111
Format Type: PDF Article :
File Size: Pages 4
Reproduction Date: 2015

Title: A Solar Cycle of Spacecraft Anomalies Due to Internal Charging : Volume 20, Issue 7 (30/11/-0001)  
Author: Wrenn, G. L.
Volume: Vol. 20, Issue 7
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Ryden, K. A., Wrenn, G. L., & Rodgers, D. J. (-0001). A Solar Cycle of Spacecraft Anomalies Due to Internal Charging : Volume 20, Issue 7 (30/11/-0001). Retrieved from

Description: QinetiQ, A8, Cody Technology Park, Farnborough, Hampshire, GU14 0LX, UK. It is important to appreciate how the morphology of internal charging of spacecraft systems, due to penetrating electrons, differs from that of the more common surface charging, due to electrons with lower energy. A specific and recurrent anomaly on a geostationary communication satellite has been tracked for ten years so that solar cycle and seasonal dependencies can be clearly established. Concurrent measurements of sunspot number, solar wind speed and 2-day >2 MeV electron fluence are presented to highlight pertinent space weather relationships, and the importance of understanding the complex particle interaction processes involved.

Key words. Magnetospheric physics (energetic particles; trapped; solar wind – magnetosphere interactions) – space plasma physics (spacecraft sheaths, wakes, charging)

A solar cycle of spacecraft anomalies due to internal charging


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