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Germanium PIN-diode devices are the most sensitive detectors of infrared radiation in the spectral region 1.2-1.8 mu m. They are also excellent detectors of nuclear radiation, and the voltage spikes generated by cosmic muons have amplitudes up to 10 4 times the electrical noise level of the detector system. The authors describe a circuit, for use with either chopped or unchopped infrared, which almost completely eliminates these spikes and allows measurement of very low signal close to the noise limit of the detector.
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Collins et al. (1982) studied this question.
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