Visualizing Pure Quantum Turbulence in Superfluid 3He: Andreev Reflection and its Spectral Properties.
Visualizing Pure Quantum Turbulence in Superfluid 3He: Andreev Reflection and its Spectral Properties.
复制标题
DOI：
10.1103/physrevlett.115.015302
复制
发表时间：
2015-03
影响因子：
8.6
通讯作者：
A. Baggaley;V. Tsepelin;C. Barenghi;S. Fisher;G. Pickett;Y. Sergeev;N. Suramlishvili
中科院分区：
文献类型：
--
作者：
A. Baggaley;V. Tsepelin;C. Barenghi;S. Fisher;G. Pickett;Y. Sergeev;N. Suramlishvili
零温极限下的超流3 He-B通过涡旋流场对准粒子激发的Andreev反射提供了研究量子湍流的独特手段。我们验证了实验可视化的湍流在3 He-B显示的涡旋线密度和Andreev反射率的涡旋缠结的Andreev反射率之间的关系，在第一次模拟的Andreev反射率由一个现实的三维涡旋缠结，并比较结果与第一次实验测量能够探测量子湍流的长度尺度小于涡间分离。
Superfluid 3He-B in the zero-temperature limit offers a unique means of studying quantum turbulence by the Andreev reflection of quasiparticle excitations by the vortex flow fields. We validate the experimental visualization of turbulence in 3He-B by showing the relation between the vortex-line density and the Andreev reflectance of the vortex tangle in the first simulations of the Andreev reflectance by a realistic 3D vortex tangle, and comparing the results with the first experimental measurements able to probe quantum turbulence on length scales smaller than the intervortex separation.