Adiabatic Fountain Resonance for 4He and 3He-4He Mixtures
β Scribed by F. M. Gasparini; M. O. Kimball; S. Mehta
- Book ID
- 110317888
- Publisher
- Springer US
- Year
- 2001
- Tongue
- English
- Weight
- 450 KB
- Volume
- 125
- Category
- Article
- ISSN
- 0022-2291
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π SIMILAR VOLUMES
Helium-3 nuclear spin relaxation times T1, T2, and Tip have been measured for 3He-4He solid mixtures at the exchange plateau region (~ O. 5 K). The 3He concentrations x3 of the samples were 7.2, 2.9, 1.8, 1.4, 0.67, 0.65, and 0.22 %, and their molar volumes varied between 19.9 and 20.9 cm3 /mole in
A cooling method in which superfluid 4He is injected in pure SHe is described. In principle ultralow mixture temperatures can be reached with starting temperatures below --500 laK. In this contribution the 4He injection method is described together with preliminary results in the 20 to 200 mK region