## A nuclear demagnetization refrigerator with diffusion-welded copper nuclear stage has been constructed and successfully operated. The stage consists of 80 mol of copper and is capable, starting from an initial magnetic field of 6.4 T, of cooling the superfluid 3He-B down to temperatures of -280
A compact copper nuclear demagnetization refrigerator
β Scribed by Giorgio Frossati; Peter G. van der Haar; Mark W. Meisel; Peter Remeijer; Stephen C. Steel; Raymond Wagner; Clemens M.C.M. van Woerkens
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 418 KB
- Volume
- 194-196
- Category
- Article
- ISSN
- 0921-4526
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Two-stage nuclear demagnetization has been performed using PrCu6 and Cu as coolants. The Cu nuclear stage reached temperatures as low as 10 izK with a rate of temperature rise of less than a few IxK/h. The corresponding conduction electron temperature is estimated to be less than 50 I~K. A nuclear o
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