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Nuclear refrigeration of copper

✍ Scribed by P.M. Berglund; G.J. Ehnholm; R.G. Gylling; O.V. Lounasmaa; R.P. Søvik

Book ID
103050830
Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
300 KB
Volume
12
Category
Article
ISSN
0011-2275

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✦ Synopsis

Nuclear refrigeration experiments on a 12 mole copper specimen are described. A conduction electron temperature of 0.37 mK, significantly lower than before, was achieved. The nuclear stage could be kept below 2 mK for 12 hour& It is shown that both the spinlattice relaxation mechanism and the bulk electronic thermal conductivity in copper are important processes which determine the temperature distribution in the nuclear stage after demagnetization. The reversibility of the cooling process is analysed.

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