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Published August 2014 | public
Journal Article

Sub-Kelvin Thermal Conductivity and Radioactivity of Some Useful Materials in Low Background Cryogenic Experiments

Abstract

We present measurements of the thermal conductivity between 0.05 and 1 K, and radioactive contamination levels, for some thermally isolating materials. TIMET Ti 15-3-3-3, Mersen grade 2020 graphite, Vespel SP-1, Vespel SP-22, Vespel SCP-5000, Vespel SCP-5050, Graphlite CFRP, and a Kapton/epoxy composite are all investigated. Thermal conductivities were measured using a single-heater longitudinal heat flow method. Material radioactivity was determined for the materials at a low background counting facility using a high-purity gamma detector and GEANT4 Monte Carlo simulations.

Additional Information

© 2014 Springer Science+Business Media New York. Received: 23 July 2013. Accepted: 20 December 2013. Published online: 23 January 2014. The authors would like to thank Curbell Plastics and Tech-Etch for donating test samples. This work was funded by the Department of Energy and the National Science Foundation.

Additional details

Created:
August 20, 2023
Modified:
October 26, 2023