Measurements of Vortex Line Density Generated by a Quartz Tuning Fork in Superfluid He

被引：0

作者：

Jackson, M. J. ^{[1
]}

Kolosov, O. ^{[2
]}

Schmoranzer, D. ^{[1
]}

Skrbek, L. ^{[1
]}

Tsepelin, V. ^{[2
]}

Woods, A. J. ^{[2
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Ke Karlovu 3, CR-12116 Prague 2, Czech Republic

[2] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2016年 / 183卷 / 3-4期

基金：

英国工程与自然科学研究理事会;

关键词：

Quantum turbulence; Superfluid helium-4; Tuning fork; Second sound; QUANTUM TURBULENCE; 2ND SOUND; HELIUM;

D O I：

10.1007/s10909-015-1397-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present proof-of-concept measurements of the vortex line density generated by a quartz tuning fork resonator probed by the attenuation of second sound in superfluid He at 1.6 K. The force-velocity response of a quartz tuning fork operating at a frequency of 31 kHz exhibited the onset of extra damping at a velocity of 0.5 ms. Attenuation of the 5th resonant mode of second sound was observed at the same velocity, indicating the production of vortex lines. Our measurements demonstrate that an increase of the drag coefficient corresponds to the development of quantum turbulence.

引用

页码：208 / 214

页数：7

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