A single-stage nuclear demagnetization cryostat is reported with 33 moles of copper in a magnetic induction of 8 T developed for the investigation of low temperature thermometry. The lowest temperature measured with a Pt NMR thermometer was 130 PK, and the time dependent heat leak approached 0.3 nW
โฆ LIBER โฆ
Compact PrNi5 nuclear demagnetization cryostat
โ Scribed by S.A.J. Wiegers; T. Hata; C.C. Kranenburg; P.G. van de Haar; R. Jochemsen; G. Frossati
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 487 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
We describe a compact combination of a powerful dilution refrigerator and a PrNis nuclear demagnetization stage. Both the nuclear stage and the demagnetization magnet are located in the empty space left by the heat exchangers of the dilution refrigerator and do not occupy extra space. We describe the construction and some performance tests.
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