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Schoepe W. Fluctuations and stability of superfluid turbulence at mK temperatures. Phys Rev Lett. 2004;92(9):095301doi: 10.1103/PhysRevLett.92.095301.
Schoepe, W. (2004). Fluctuations and stability of superfluid turbulence at mK temperatures. Physical review letters, 92(9), 095301. https://doi.org/10.1103/PhysRevLett.92.095301
Schoepe, W. "Fluctuations and stability of superfluid turbulence at mK temperatures." Physical review letters vol. 92,9 (2004): 095301. doi: https://doi.org/10.1103/PhysRevLett.92.095301
Schoepe W. Fluctuations and stability of superfluid turbulence at mK temperatures. Phys Rev Lett. 2004 Mar 05;92(9):095301. doi: 10.1103/PhysRevLett.92.095301. Epub 2004 Mar 05. PMID: 15089482.
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Phys Rev Lett. 2004 Mar 05;92(9):095301. doi: 10.1103/PhysRevLett.92.095301. Epub 2004 Mar 05.

Fluctuations and stability of superfluid turbulence at mK temperatures.

Physical review letters

W Schoepe

Affiliations

  1. Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040 Regensburg, Germany.

PMID: 15089482 DOI: 10.1103/PhysRevLett.92.095301

Abstract

Turbulent flow of superfluid 4He at mK temperatures around an oscillating microsphere is known to be unstable at low driving forces, switching intermittently between turbulent and laminar phases. The lifetimes of the turbulent phases are exponentially distributed, and the mean lifetimes grow exponentially with the square of the driving force. These experimental results are attributed to statistical fluctuations of the density L of the vortex line length. As a result, a normal probability distribution of L2 is found having a standard deviation of 2.9 x 10(14) m(-4) and a spectral bandwidth Deltaomega approximately 13 s(-1).

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