Physics
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..4cf.f1020c&link_type=abstract
American Physical Society, Four Corners Section of the APS Fall Meeting, October 6-7, 2006, abstract #F1.020
Physics
Scientific paper
We report on initial measurements of Radiation Induced Conductivity (RIC) for twelve thin film polymer materials that are used in the cabling of the James Webb Space Telescope. Results will be used to model possible detrimental arching due to space craft charging effects. RIC occurs when incident ionizing radiation deposits energy in a material and excites electrons into the conduction band of insulators. RIC is determined using a constant voltage test method as the difference in the equilibrium sample conductivity under no incident radiation and sample conductivity under an incident flux. An accelerator beam at the Idaho Accelerator Center provides the 2-5 MeV incident flux over a range of 10^2 to 10^+1 rad/sec. Measurements are made for a range of applied voltages and radiation dose rates.
Abbott James
Corbridge J.
Dennison John R.
Hodges Jonathan
Hoffmann C. R.
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