Stability of germanium resistance thermometers at 20 K.
Thirty germanium resistance thermometers have been thermally cycled 100 times between 20 and 300 K, and their stability at 20 K has been evaluated. The results reveal a wide range of stabilities, ranging from 0.1 to 20 mK. Five different modes of behavior have been provisionally classified as stable, drifting, jumping, bimodal, and irregular.
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National Measurement Laboratory, CSIRO, Sydney, Australia 2070.
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