Decay of pure quantum turbulence in superfluid 3He-B -: art. no. 035301
Decay of pure quantum turbulence in superfluid 3He-B -: art. no. 035301
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DOI：
10.1103/physrevlett.96.035301
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发表时间：
2006-01-27
影响因子：
8.6
通讯作者：
Zaki, K
中科院分区：
文献类型：
--
作者：
Bradley, DI;Clubb, DO;Zaki, K
我们描述了超流体He-3-B中纯超流体湍流在正常流体密度可以忽略不计的低温状态下的衰减测量。我们跟踪了由振动线谐振器检测到的由振动网格产生的湍流的衰减。尽管没有任何经典的正常流体耗散过程，但衰变与具有经典Kolmogorov能谱的湍流相一致，并且与在相对高温下超流体He-4中测量到的非常相似。此外，我们的结果强烈表明，衰减是由超流体循环量子而不是运动粘度控制的。
We describe measurements of the decay of pure superfluid turbulence in superfluid He-3-B, in the low temperature regime where the normal fluid density is negligible. We follow the decay of the turbulence generated by a vibrating grid as detected by vibrating wire resonators. Despite the absence of any classical normal fluid dissipation processes, the decay is consistent with turbulence having the classical Kolmogorov energy spectrum and is remarkably similar to that measured in superfluid He-4 at relatively high temperatures. Further, our results strongly suggest that the decay is governed by the superfluid circulation quantum rather than kinematic viscosity.