Experiments on the twisted vortex state in superfluid 3He-B

被引:7
|
作者
Eltsov, V. B. [1 ]
de Graaf, R. [1 ]
Hanninen, R. [1 ]
Krusius, M. [1 ]
Solntsev, R. E. [1 ]
机构
[1] Helsinki Univ Technol, Low Temp Lab, Helsinki, Finland
关键词
superfluid He-3; quantized vortices; vortex dynamics; NMR;
D O I
10.1007/s10909-007-9565-9
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have performed measurements and numerical simulations on a bundle of vortex lines which is expanding along a rotating column of initially vortex-free He-3-B. Expanding vortices form a propagating front: Within the front the superfluid is involved in rotation and behind the front the twisted vortex state forms, which eventually relaxes to the equilibrium vortex state. We have measured the magnitude of the twist and its relaxation rate as function of temperature above 0.3T(c). We also demonstrate that the integrity of the propagating vortex front results from axial superfluid flow, induced by the twist.
引用
收藏
页码:373 / 383
页数:11
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