Dilute Gold-Iron Thermoelements in Low-Temperature Thermocouples
This paper presents some work on low-temperature thermocouples which are felt to compare favorably with other forms of thermometry at liquid-helium temperatures. The paper is divided into two main parts. First, the Au-Fe thermocouple materials are discussed and compared with other commonly used low-temperature thermoelements. The factors determining a good choice of the second arm of the thermocouple are also discussed. Second, a review is made of superconducting switching devices which allow effective measurement of very small thermocouple outputs.
KeywordsTransverse Magnetic Field Fractional Change Helium Temperature Heat Leak Thermocouple Junction
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