Anomalous sound absorption of finite amplitude sound in liquid 4He

K. Obara, Y. Kimura, A. Fukui, C. Kato, Y. Nago, H. Yano, O. Ishikawa, T. Hata

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We report the nonlinear and unsteady response of the finite amplitude pressure wave in superfluid 4He, using a classical vibrating liquid column standing wave resonator. The frequency was kept at the resonance frequency of the liquid column, so that the maximum of the pressure field always came to the surface of the driver. As a result, in the low driving-amplitude regime, I/O relations were linear. However, in the high driving-amplitude regime, anomalous responses were found; The amplitude of the signals suddenly reduced and gradually recovered; they were repeated with random intervals. Moreover, in the highly suppressed region in the waveform, we found a generation of new type of turbulence. These absorptions are expected to be the result of the vapor bubble ejection from the surface of the driver transducer.

Original languageEnglish
Article number012057
JournalJournal of Physics: Conference Series
Volume400
Issue numberPART 1
DOIs
Publication statusPublished - 2012
Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: 2011 Aug 102011 Aug 17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Obara, K., Kimura, Y., Fukui, A., Kato, C., Nago, Y., Yano, H., Ishikawa, O., & Hata, T. (2012). Anomalous sound absorption of finite amplitude sound in liquid 4He. Journal of Physics: Conference Series, 400(PART 1), [012057]. https://doi.org/10.1088/1742-6596/400/1/012057