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Two-stage nuclear demagnetization refrigerator |
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| Authors: | K. ôno S. Kobayasi M. Shinohara K. Asahi H. Ishimoto N. Nishida M. Imaizumi A. Nakaizumi J. Ray Y. Iseki S. Takayanagi K. Terui T. Sugawara |
| Affiliation: | (1) The Institute for Solid State Physics, The University of Tokyo, Roppongi, Tokyo, Japan;(2) Present address: Tata Institute of Fundamental Research, Bombay, India |
| Abstract: | Two-stage nuclear demagnetization has been performed using PrCu6 and Cu as coolants. The Cu nuclear stage reached temperatures as low as 10  K with a rate of temperature rise of less than a few K/h. The corresponding conduction electron temperature is estimated to be less than 50 K. A nuclear orientation thermometer of Al54Mn has been successfully used to measure temperatures down to 10 K.Supported by the Japan Society for the Promotion of Science. |
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