Leftover Superfluid 4He in Aerogel and Its Crystallization by Cooling

Matsuda, Hirofumi; Ochi, Aguri; Isozaki, R.; Nomura, R.; Okuda, Y.

doi:10.1007/s10909-012-0678-4

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2013

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“…Possible mechanism for the crystallization by cooling is discussed. Some results of this paper have been reported elsewhere [17].…”

Section: Introductionmentioning

confidence: 62%

Formation of superfluid liquid pocket in aerogel and its solidification by cooling

Matsuda

Ochi

Isozaki

et al. 2013

Low Temperature Physics

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Formation of superfluid liquid pockets of 4 He surrounded by 4 He crystals were observed in an aerogel of 96% porosity. The liquid pockets did not crystallize by application of pressure but crystallized via avalanche by cooling below a particular temperature. The crystallization by cooling was also observed when crystals occupied a smaller portion of the aerogel. Driving force for the crystallization by cooling and possible mass transport process are discussed.

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“…Possible mechanism for the crystallization by cooling is discussed. Some results of this paper have been reported elsewhere [17].…”

Section: Introductionmentioning

confidence: 62%