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Thermal Contact Resistance at Cryogenic Temperatures in the Presence of Strong Magnetic Fields
Ist Teil von
Journal of communications technology & electronics, 2023-04, Vol.68 (4), p.420-424
Ort / Verlag
Moscow: Pleiades Publishing
Erscheinungsjahr
2023
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A physical model of a mechanical thermal switch at cryogenic temperatures is studied. In the model, heat is transferred due to contact heat conduction in a detachable contact pair of two copper cylinders. A mechanical thermal switch is developed using a cryomagnetic system with a 10-T superconducting solenoid, and the values of thermal contact conductance are determined in a temperature interval of 10–160 K, including values at a magnetic field of 5 T. In an experimental temperature interval of 60–80 K, close to the phase transition of the DyAl
2
and GdNi
2
compounds, the thermal contact conductance is 2300–3300 W/(m
2
K). The effect of magnetic field of up to 5 T on thermal contact resistance is experimentally determined under vacuum conditions.