Silicon cell for the precise measurement of thermal expansion at low temperatures: Results for Cu and NaF
- 1 January 1980
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 51 (1) , 27-31
- https://doi.org/10.1063/1.1136050
Abstract
A three terminal capacitance dilatometer for low temperatures is reported in which the expansivity of a sample is compared to that of silicon, a material of very small expansivity at low temperatures. The thermal expansion of a standard copper sample is measured down to 3 K and the results compared with other authors. Values for the linear thermal expansion coefficient of a pure NaF single crystal below 5 K are reported for the first time.Keywords
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