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Propagation of Quantized Vortices Driven by an Oscillating Sphere in Superfluid 4He

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Abstract

We performed numerical simulation of quantum turbulence at 0 K generated from remnant vortices attached to an oscillating sphere. The remnant vortices are extended by the sphere motion and form a tangle with emitting vortex loops. As time passes, the length of vortices in a computational volume becomes statistically steady. We investigate in the statistical steady state the distribution of the length of vortex loops and anisotropy of their propagation direction caused by the sphere oscillation. The propagation direction of the emitted vortex loops is anisotropic along the oscillation direction of the sphere. The obtained results are consistent with results obtained in the experimental study using vibrating wires in superfluid 4He.

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Acknowledgements

We would like to thank T. Hata and Y. Nago for helpful discussions. The research was supported by a Grant-in-Aid for Scientific Research (B) (Grant No. 23340108) from Japan Society for the Promotion of Science.

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Authors and Affiliations

  1. Department of Physics, Osaka City University (OCU), Sumiyoshi-ku, Osaka, 558-8585, Japan

    A. Nakatsuji, M. Tsubota & H. Yano

  2. The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka, Japan

    M. Tsubota

Authors
  1. A. Nakatsuji
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  2. M. Tsubota
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  3. H. Yano
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Correspondence to A. Nakatsuji.

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Nakatsuji, A., Tsubota, M. & Yano, H. Propagation of Quantized Vortices Driven by an Oscillating Sphere in Superfluid 4He. J Low Temp Phys 171, 519–525 (2013). https://doi.org/10.1007/s10909-012-0797-y

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  • DOI: https://doi.org/10.1007/s10909-012-0797-y

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