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Observation of3He crystal nucleation from the superfluid phases

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Abstract

A CCD camera operating at T = 65 K was mounted in the vacuum space of our nuclear demagnetization cryostat. This has allowed us to make observations of3He crystals at temperatures below the superfluid phase transitions, in contrast to direct optical observations, which have so far been limited to T ≥ 20 mK.1 The good thermal equilibrium provided by the superfluid allows us to nucleate single crystals of3He in the region of the cell visible to the optical system. This occurs either spontaneously (due either to gravitational pressure gradients or local surface defects) or as a result of a small applied heat pulse.

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References

  1. E. Rolley, E. Chevalier, C. Guthmann, and S. Balibar,Phys. Rev. Lett.,72, 872 (1994); and S. Balibar, Private Communication.

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Authors and Affiliations

  1. Kamerlingh Onnes Laboratorium, Leiden University, P.O. Box 9506, 2300, RA Leiden, The Netherlands

    Raymond Wagner, Stephen C. Steel, Olga A. Andreeva, Alexei N. Marchenkov, Reyer Jochemsen & Giorgio Frossati

  2. Kapitza Inst. for Physical Problems, ul. Kosygina 2, 117334, Moscow, Russia

    Olga A. Andreeva

Authors
  1. Raymond Wagner
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  2. Stephen C. Steel
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  3. Olga A. Andreeva
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  4. Alexei N. Marchenkov
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  5. Reyer Jochemsen
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  6. Giorgio Frossati
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Wagner, R., Steel, S.C., Andreeva, O.A. et al. Observation of3He crystal nucleation from the superfluid phases. J Low Temp Phys 101, 287–292 (1995). https://doi.org/10.1007/BF00754590

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  • DOI: https://doi.org/10.1007/BF00754590

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