New flow dissipation mechanisms in superfluid 3He

被引：18

作者：

Simmonds, RW ^{[1
]}

Marchenkov, A

Vitale, S

Davis, JC

Packard, RE

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Trent, Dept Phys, I-38050 Trent, Italy

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.84.6062

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the flow of superfluid He-3-B forced through small apertures. There are unexpectedly large dissipative currents, which can be described by two independent processes. One process involves the creation of quasiparticles within the aperture and their subsequent acceleration in the ambient pressure gradient. The second process involves the dissipative precession of a texture in a geometry-induced anisotropic order parameter. For both mechanisms we make a simple estimate of the relevant effect and find these agree well with the data.

引用

页码：6062 / 6065

页数：4

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