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7 July 2006 Behavior of Si:As and Si:Sb detectors in space
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We present an analysis of the behavior of the detectors on the Infrared Spectrograph (IRS)1 onboard Spitzer.2 The detectors of the IRS have been subjected to a 2.5 years of harsh space environments. We found that the number of protons hitting the IRS detectors is approximately 1 every second. We also present a simple analysis that shows that the Si:Sb detectors are about a factor 3 to 6 times more sensitive to the space environment than the Si:As detectors.
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Daniel Devost and Gregory C. Sloan "Behavior of Si:As and Si:Sb detectors in space", Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62652F (7 July 2006);

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