Thermometry

Four kinds of thermometry are available at the High B/T Facility: capacitance, melting curve, Pt NMR, and vibrating wire thermometry.

Capacitance Thermometry in High B/T

A capacitance thermometer is used for ultra-low temperature measurements when large variations in magnetic field are required for an experiment and conventional thermometry is not suitable because of the field dependence of those thermometers.

Melting Curve Thermometry in High B/T

3He melting curve thermometers are one of the most reliable thermometers to use in the 20-800 mK temperature range.

Platinum NMR Thermometry in High B/T

Pt NMR thermometry, as used in the High B/T Facility, relies on the paramagnetism of the Pt nuclear spins, which obey Curie's law with the NMR free-induction amplitude inversely proportional to temperature.

Vibrating Wire Thermometry in High B/T

The vibrating wire thermometer measures the viscosity of the superfluid medium in which it vibrates. The temperature is determined form the known temperature dependence of the viscosity.