SOLIDIFICATION OF HELIUM IN CONFINED GEOMETRIES

被引：28

作者：

BITTNER, DN ^{[1
]}

ADAMS, ED ^{[1
]}

机构：

[1] UNIV FLORIDA, DEPT PHYS, GAINESVILLE, FL 32611 USA

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1994年 / 97卷 / 5-6期

关键词：

D O I：

10.1007/BF00754306

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Solidification and melting of helium in confined geometries has been studied in a series of in situ pressure measurements, using both He-3 and He-4, in porous glass with pore sizes from 12 to 191 Angstrom in radius. These measurements covered the temperature range from 0.04 to 2 K and pressures up to 6 MPa. In He-3, a pressure minimum is observed in the pores at the same temperature as for the bulk. At large pore sizes the elevation in pressure in He-3 is inversely proportional to the pore radius as predicted by the model based on homogeneous nucleation of solid as a result of density fluctuations. However, the magnitude of the pressure elevation does not agree with this model. In He-4, comparison with the model is complicated by the strong temperature-dependence of the pressure elevation.

引用

页码：519 / 535

页数：17

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