Heat capacity of adsorbed helium-3 at ultra-low temperatures

被引：7
|
作者：
Elbs, J. [1 ]
Winkelmann, C. [1 ]
Bunkov, Yu. M. [1 ]
Collin, E. [1 ]
Godfrin, H. [1 ]
机构：
[1] Ctr Rech Tres Basses Temp, F-38042 Grenoble, France
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2007年 / 148卷 / 5-6期
关键词：
D O I：
10.1007/s10909-007-9428-4
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on direct measurements of the heat capacity of monolayers of He-3 adsorbed on the surface of a copper cell filled with superfluid He-3. We found that at ultra low temperatures the surface He-3 heat capacity dominates over the heat capacity of the bulk liquid He-3. The replacement of adsorbed He-3 by He-4 changes the heat capacity of the sample by an order of magnitude. These investigations were made in the framework of the "ULTIMA" project, a dark matter detector based on superfluid He-3 in the limit of ultra low temperatures.
引用
收藏
页码：749 / 753
页数：5
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