UBC Theses and Dissertations

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UBC Theses and Dissertations

³He melting curve thermometer Shinkoda, Ichiro


This thesis decribes the choice, the construction, the operation, and the testing of a ³He melting curve thermometer. The melting curve thermometer satisfies the need of this particular laboratory for a convenient standard thermometer in the temperature range of 6 mK to 600 mK. Over most of its operating range, the resolution of the temperature measured with the ³He melting curve thermometer is 0.03%, however, the accuracy is only 0.3%. The construction of a precision low temperature strain gauge is described. Also a ratio transformer capacitance bridge which has a resolution of 1 ppm is described.

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