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radiation and internal charging environments for thin dielectrics in interplanetary spaceSpacecraft designs using solar sails for propulsion or thin membranes to shade instruments from the sun to achieve cryogenic operating temperatures are being considered for a number of missions in the next decades. A common feature of these designs are thin dielectric materials that will be exposed to the solar wind, solar energetic particle events, and the distant magnetotail plasma environments encountered by spacecraft in orbit about the Earth-Sun L2 point. This paper will discuss the relevant radiation and internal charging environments developed to support spacecraft design for both total dose radiation effects as well as dose rate dependent phenomenon, such as internal charging in the solar wind and distant magnetotail environments. We will describe the development of radiation and internal charging environment models based on nearly a complete solar cycle of Ulysses solar wind plasma measurements over a complete range of heliocentric latitudes and the early years of the Geotail mission where distant magnetotail plasma environments were sampled beyond X(sub GSE) = -100 Re to nearly L2 (X(sub GSE) ~-236 Re). Example applications of the environment models are shown to demonstrate the radiation and internal charging environments of thin materials exposed to the interplanetary space plasma environments.
Document ID
20050182066
Document Type
Conference Paper
Authors
Minow, Joseph I.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Parker, Linda Neergaard
(Jacobs Sverdrup Technology, Inc. Huntsville, AL, United States)
Altstatt, Richard L.
(Jacobs Sverdrup Technology, Inc. Huntsville, AL, United States)
Date Acquired
August 23, 2013
Publication Date
October 21, 2004
Subject Category
Spacecraft Design, Testing and Performance
Meeting Information
9th Spacecraft Charging Technology Conference(Tsukuba)
Distribution Limits
Public
Copyright
Other