Critical Overpressure for Nucleation of super(4)He Crystals in Aerogel

In an aerogel contained in a flat glass tube, we measured critical overpressures at which the very first super(4)He crystal appeared. Crystallization and melting were repeated 50 times at a constant temperature in a variable volume cell and the nucleation probability as a function of overpressure wa...

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Veröffentlicht in:	Journal of physics. Conference series 2012-01, Vol.400, p.1-4
Hauptverfasser:	Matsuda, Hirofumi, Masumoto, Ryota, Ochi, Aguri, Nomura, Ryuji, Okuda, Yuichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerogels Constants Crystals Mathematical analysis Melting Nucleation Overpressure Tubes
Online-Zugang:	Volltext
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Zusammenfassung:	In an aerogel contained in a flat glass tube, we measured critical overpressures at which the very first super(4)He crystal appeared. Crystallization and melting were repeated 50 times at a constant temperature in a variable volume cell and the nucleation probability as a function of overpressure was obtained. An anisotropic S shape characteristic of the nucleation process was successfully observed.
ISSN:	1742-6588 1742-6596
DOI:	10.1088/1742-6596/400/1/012044