LIQUID LEVEL HELIUM THERMOMETER
A closed thermometer is described that contains a tube of He/sup 3/ or He/sup 4/ in liquid-vapor equilibrium. The temperature is calculated by measuring the volume of liquid originally inserted into the thermometer, and the change in the liquid level in the tube as the temperature is changed from a reference temperature to the unknown temperature. The temperature-vapor pressure characteristics of the liquid used must be taken into account in the calculation of the temperature. The behavior of this type of thermometer from 0.8 to 4.2 deg K is described. (T.F.H.)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-004790
- OSTI ID:
- 4756669
- Journal Information:
- Rev. Sci. Instr., Vol. Vol: 33; Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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