Observation of acoustic turbulence in a system of nonlinear second sound waves in superfluid ⁴He
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Observation of acoustic turbulence in a system of nonlinear second sound waves in superfluid ⁴He
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| Creator |
Ganshin, A.N.
Efimov, V.B. Kolmakov, G.V. McClintock, P.V.E. Mezhov-Deglin, L.P. |
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| Subject |
Жидкий гелий
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| Description |
We discuss the results of recent studies of acoustic turbulence in a system of nonlinear second sound waves in a high-quality resonator filled with superfluid ⁴He. It was found that, when the driving amplitude was sufficiently increased, a steady-state direct wave cascade is formed involving a flux of energy towards high frequencies. The wave amplitude distribution follows a power law over a wide range of frequencies. Development of a decay instability at high driving amplitudes results in the formation of subharmonics of the driving frequency, and to a backflow of energy towards the low-frequency spectral domain, in addition to the direct cascade. |
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| Date |
2017-05-18T10:34:33Z
2017-05-18T10:34:33Z 2008 |
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| Type |
Article
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| Identifier |
Observation of acoustic turbulence in a system of
nonlinear second sound waves in superfluid ⁴He
/ A.N. Ganshin, V.B. Efimov, G.V. Kolmakov, P.V.E. McClintock, L.P. Mezhov-Deglin
// Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 367–372. — Бібліогр.: 24 назв. — англ.
0132-6414 PACS: 67.25.dg;67.25.dt;47.27.Cn;05.20.Dd http://dspace.nbuv.gov.ua/handle/123456789/116917 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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