The Plastic Flow of Solid 4He Through a Porous Membrane

被引：9

作者：

Lisunov, A. ^{[1
]}

Maidanov, V. ^{[1
]}

Mikhin, N. ^{[1
]}

Neoneta, A. ^{[1
]}

Rubanskyi, V. ^{[1
]}

Rubets, S. ^{[1
]}

Rudavskii, E. ^{[1
]}

Zhuchkov, V. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, Kharkov, Ukraine

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2014年 / 175卷 / 1-2期

关键词：

Solid helium; Plastic flow; Vacancies; HELIUM; DIFFUSION;

D O I：

10.1007/s10909-013-0898-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The flow velocity of solid He-4 through a porous membrane frozen into a crystal has been measured in the temperature interval 0.1-1.8 K. A flat capacitor consisting of a metalized plastic porous membrane and a fixed electrode is applied and the gap in the capacitor is filled with examined helium. The flow of helium through the membrane pores is caused by a d.c. voltage applied to the capacitor plates. Above T similar to 1 K the velocity of solid He-4 flow decreases with lowering temperature following the Arrhenius law with the activation energy of the process close to that of vacancies. At low temperatures the flow velocity is almost independent of temperature and the absolute value of the velocity V in this region is less than 10(-11) cm/s under the voltage 400 V.

引用

页码：113 / 119

页数：7

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