Spatial extent of quantum turbulence in non-rotating superfluid 3He-B

被引：13

作者：

Bradley, DI ^{[1
]}

Fisher, SN ^{[1
]}

Guénault, AM ^{[1
]}

Lowe, MR ^{[1
]}

Pickett, GR ^{[1
]}

Rahm, A ^{[1
]}

机构：

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

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 329卷

关键词：

superfluidity; vorticity; quantum turbulence; He-3;

D O I：

10.1016/S0921-4526(02)01901-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Quantum turbulence has been shown to reflect a beam of quasiparticles in the B-phase of superfluid He-3 by Andreev processes. We have investigated the evolution of the turbulence generated by a vibrating wire resonator driven at high velocities and temperatures down to -0.1T(c). The vibrating wire produces vorticity together with the expected quasiparticle beam whenever the wire velocity exceeds the critical pair breaking velocity. By using an array of detector wires we are able to investigate the development of the turbulence both in space and time. We observe that the turbulence propagates preferentially along the direction of the quasiparticle beam and drops off in a roughly exponential manner with a decay length of the order of 2 mm. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：104 / 105

页数：2