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What is Low Temperature Cooling Techniques about?

This document discusses various techniques for achieving low temperatures, including: 1. Liquid nitrogen and liquid helium cooling techniques such as Joule-Thomson expansion and helium liquefiers. 2. Dilution cooling using a mixture of liquid helium-3 and helium-4, which allows temperatures below 1.3K to be reached. The phase diagram of helium-3 and helium-4 mixtures is discussed. 3. Dilution cooling works by helium-3 diffusing into the helium-4 layer, lowering the temperature until two phases separate

Author

kov709324

Language

EN