Experiments on wave turbulence : the evolution and growth of second sound acoustic turbulence in superfluid 4He confirm self-similarity.

Ganshin, A. N. and Efimov, V. B. and Kolmakov, G. V. and Mezhov-Deglin, L. P. and McClintock, P. V. E. (2010) Experiments on wave turbulence : the evolution and growth of second sound acoustic turbulence in superfluid 4He confirm self-similarity. New Journal of Physics, 12. 083047. ISSN 1367-2630

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Abstract

We report our experiments on the formation of second sound acoustic turbulence in superfluid 4He. The initial growth in spectral amplitude follows power laws that steepen rapidly with increasing harmonic number n, corresponding to a propagating front in frequency space. The lower growth exponents agree well with analytic predictions and numerical modeling. The observed increase in the formation delay with n validates the concept of selfsimilarity in the growth of wave turbulence.

Item Type:
Journal Article
Journal or Publication Title:
New Journal of Physics
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
35027
Deposited On:
05 Jan 2011 11:06
Refereed?:
Yes
Published?:
Published
Last Modified:
31 Mar 2020 01:47