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Powerful dilution refrigerator for use in the study of polarized liquid 3He and nuclear cooling

✍ Scribed by G.A Vermeulen; G Frossati


Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
944 KB
Volume
27
Category
Article
ISSN
0011-2275

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✦ Synopsis


A 3He-4He dilution refrigerator with a lowest temperature of 1.90 +__ 0.05 mK and a maximum circulation rate of 10 mmol s -I has been constructed. The apparatus is at present used for the study of 3He in high magnetic fields and as a precooling stage for nuclear demagnetization. The design and construction of the dilution refrigerator are described.


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Determination of activity coefficients a
✍ Trevor M. Letcher; Nirmala Deenadayalu πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 83 KB

Activity coefficients at infinite dilution, γ ∞ 13 , for both polar and non-polar solutes in the polar solvent quinoline, or 1,3-dimethyl-2-imidazolidinone have been determined by gasliquid chromatography at T = (278. 15, 313.15, and 323.15) K. This work is a continuation of our programme of measure