Excitation and Detection of Surface Waves on Normal and Superfluid 3He

被引：6

作者：

Manninen, M. S. ^{[1
]}

Kaikkonen, J. -P. ^{[1
]}

Peri, V. ^{[1
]}

Rysti, J. ^{[1
]}

Todoshchenko, I. ^{[1
]}

Tuoriniemi, J. ^{[1
]}

机构：

[1] Aalto Univ, OV Lounasmaa Lab, Aalto 00076, Finland

来源：

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

基金：

芬兰科学院;

关键词：

Surface waves; Interdigital capacitor; Superfluid helium-3; INTERFACIAL-TENSION; 3RD SOUND; MIXTURES;

D O I：

10.1007/s10909-013-0971-x

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We describe the measurement principles to excite and detect surface waves on liquid helium at very low temperatures. We excited the waves mechanically by rocking the whole cryostat with frequencies of few hertz. The waves were detected capacitively with an interdigital capacitor on a vertical wall of the cuboid experimental volume. In superfluid He-3 at around 0.2 mK at least eleven surface resonances were observed below 11 Hz whereas in normal fluid only a few resonances were observable above 50 mK.

引用

页码：56 / 62

页数：7

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