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

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号012057
ジャーナルJournal of Physics: Conference Series
400
PART 1
DOI
出版ステータスPublished - 2012
イベント26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
継続期間: 2011 8月 102011 8月 17

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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