Quantum turbulence of bellows-driven 4He superflow: Steady state
Quantum turbulence of bellows-driven 4He superflow: Steady state
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DOI：
10.1103/physrevb.86.134515
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发表时间：
2012-10-11
影响因子：
3.7
通讯作者：
Skrbek, L.
中科院分区：
文献类型：
--
作者：
Babuin, S.;Stammeier, M.;Skrbek, L.
通过第二声在截面为 7 毫米和 10 毫米、长度为 115 毫米的方形流道中的衰减来研究超流体 He-4 中的量子湍流。通道的末端被烧结银超级泄漏堵塞，以允许纯粹的超级流动（即，仅超流体成分的净流动）。流动是通过机械操作低温波纹管组件产生的，这与之前超流湍流研究中常用的氦喷泉泵不同。温度范围为1.35 K
Quantum turbulence in superfluid He-4 is studied by the attenuation of second sound in flow channels of 7-mm and 10-mm side square cross sections, and 115-mm length. The ends of the channels are plugged by sintered silver superleaks to allow a pure superflow (i.e., a net flow of the superfluid component only). Flows are generated by mechanically operating a low temperature bellows assembly, as opposed to the helium fountain pump commonly used for previous superflow turbulence studies. The temperature range is 1.35 K