期刊
INFRARED PHYSICS & TECHNOLOGY
卷 50, 期 1, 页码 30-37出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.infrared.2006.08.001
关键词
space-based remote sensing; atmospheric research instrumentation; extended-wavelength InGaAs; radiation damage
The performance of the SCIAMACHY detectors has been monitored since launch. Only minor degradation of the silicon-based UV-Vis detectors and the lattice-matched InGaAs NIR detector is observed. The degradation of the NIR extended-wavelength InGaAs detector arrays, however, which are used for the first time in a space-based remote sensing application, is unexpectedly large. The degradation of individual detector pixels is abrupt and mostly leads to excessively high (spread in) dark current. Evidence is presented that non-ionizing radiation due to trapped-protons leads to displacement damage to the InGaAs detector material. The current degradation rate leads to a loss of approximately 50 out of 1024 pixels per channel per year. (c) 2006 Elsevier B.V. All rights reserved.
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