Melting of He-3 in a phase-separated solid He-3-He-4 mixture.

Haley, Richard P. and Adams, E. D. (1997) Melting of He-3 in a phase-separated solid He-3-He-4 mixture. Low Temperature Physics, 23 (5-6). pp. 461-463. ISSN 1090-6517

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The melting pressure of the He-3-rich phase, which is formed after phase separation of a mixture of 0.6% He-3 in He-4, has been studied in the temperature range 1-150 mK, below the phase-separation temperature T-ps, at pressures between 2.78 and 3.56 MPa. Measurements were made with the mixture confined in a silver sinter, and also in an open volume for comparison. An elevation of the melting pressure relative to pure He-3 of up to 60 kPa in the sinter cell and 20 kPa in the open-volume cell was observed. Hysteresis between the freezing and melting temperatures was found for both cells, similar to that observed for pure He-3 in small pores. The results of Schrenk et al. for heat capacity measurements on a similar system are discussed.

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Journal Article
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Low Temperature Physics
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02 Feb 2009 16:14
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21 Nov 2022 19:11