Compressibility of 4He Liquid Confined in Nuclepore

被引：0

作者：

M. P. Lilly

R. B. Hallock

机构：

[1] University of Massachusetts,Laboratory for Low Temperature Physics, Department of Physics and Astronomy

[2] Caltech,Condensed Matter Physics

来源：

Journal of Low Temperature Physics | 1998年 / 110卷

关键词：

Surface Tension; Compressibility; Magnetic Material; Pore Diameter; Porous Material;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Adding and removing4He from an experimental cell which contains the porous material Nuclepore results in capillary condensation, hysteresis and avalanches. The volume of liquid in the nearly cylindrical pores is monitored with a capacitance technique. For the situation when all of the pores are full, the initial removal of4He from the cell results in a slight non-hysteretic decrease in the capacitance, which we attribute to the isothermal compressibility of4He. As4He atoms are removed, the surface tension at the meniscus applies a negative pressure to the liquid in the filled pores, which results in a reduction of the density and a decrease in the capacitance. We present results for4He capillary condensed in 2000 Å pore diameter Nuclepore.

引用

页码：555 / 560

页数：5