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 language | English |
|---|---|
| Article number | 012057 |
| Journal | Journal of Physics: Conference Series |
| Volume | 400 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - 2012 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Anomalous sound absorption of finite amplitude sound in liquid 4He. / Obara, K.; Kimura, Y.; Fukui, A.; Kato, C.; Nago, Yusuke; Yano, H.; Ishikawa, O.; Hata, T.
In: Journal of Physics: Conference Series, Vol. 400, No. PART 1, 012057, 2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anomalous sound absorption of finite amplitude sound in liquid 4He
AU - Obara, K.
AU - Kimura, Y.
AU - Fukui, A.
AU - Kato, C.
AU - Nago, Yusuke
AU - Yano, H.
AU - Ishikawa, O.
AU - Hata, T.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84873670107&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84873670107&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/400/1/012057
DO - 10.1088/1742-6596/400/1/012057
M3 - Article
AN - SCOPUS:84873670107
VL - 400
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - PART 1
M1 - 012057
ER -