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Radiation Effects on Satellites During Extreme Space Weather Events

Hands, ADP, Ryden, Keith, Meredith, NP, Glauert, SA and Horne, RB (2018) Radiation Effects on Satellites During Extreme Space Weather Events Space Weather, 16 (9). pp. 1216-1226.

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High-energy trapped electrons in the Van Allen belts pose a threat to the survivability of orbiting spacecraft. Two key radiation effects are total ionizing dose and displacement damage dose in components and materials, both of which cause cumulative and largely irreversible damage. During an extreme space weather event, trapped electron fl uxes in the Van Allen belts can increase by several orders of magnitude in intensity, leading to an enhanced risk of satellite failure. We use extreme environments generated by modeling and statistical analyses to estimate the consequences for satellites in terms of the radiation effects described above. A worst-case event could lead to signi fi cant losses in power generating capability — up to almost 8% — and cause up to four years ’ worth of ionizing dose degradation, leading to component damage and a life-shortening effect on satellites. The consequences of such losses are hugely signi fi cant given our increasing reliance on satellites for a vast array of services, including communication, navigation, defense, and critical infrastructure.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Hands, ADP
Meredith, NP
Glauert, SA
Horne, RB
Date : 18 August 2018
Funders : NERC; FP7
DOI : 10.1029/2018SW001913
Copyright Disclaimer : © 2018 American Geophysical Union. All Rights Reserved.
Depositing User : Melanie Hughes
Date Deposited : 20 Sep 2018 08:15
Last Modified : 11 Dec 2018 11:24

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