Use of Graphite as Low Temperature Support and Shunt for Heat Switch
- 1 September 1960
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 31 (9) , 970-973
- https://doi.org/10.1063/1.1717120
Abstract
Artificial pitch‐bonded graphite is known to exhibit an extremely large variation of heat conductivity with temperature. It is both rigid and strong, and below 1°K its heat conductivity is exceptionally small. For these reasons we have found it to be an ideal support material for use within the adiabatic enclosure of a cryostat operated below 1°K. Furthermore, above liquid nitrogen temperature graphite is an excellent heat conductor, and when used in parallel with a lead heat switch, it proves unnecessary to admit exchange gas during the precool period. The graphite exhibits a strong pumping action for helium gas at low temperatures.Keywords
This publication has 5 references indexed in Scilit:
- Heat Capacity of Aluminum between 0.1°K and 4.0°KPhysical Review B, 1959
- Thermal Contact and Insulation below 1°KReview of Scientific Instruments, 1956
- Observed Dependence of the Low-Temperature Thermal and Electrical Conductivity of Graphite on Temperature, Type, Neutron Irradiation, and BrominationPhysical Review B, 1956
- The heat conductivity of superconductors below 1° KProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1955
- Heat Flow in Metals below 1 °K and a New Method for Magnetic CoolingPhysical Review B, 1949