Fluctuations and Correlations of Pure Quantum Turbulence in Superfluid 3He-B.

@article{Bradley2008FluctuationsAC,
  title={Fluctuations and Correlations of Pure Quantum Turbulence in Superfluid 3He-B.},
  author={Daragh Bradley and Shaun Neil Fisher and A M Gu{\'e}nault and Richard P Haley and Stephen O'Sullivan and George R Pickett and Viktor Tsepelin},
  journal={Physical review letters},
  year={2008},
  volume={101 6},
  pages={065302}
}
We describe the first measurements of line-density fluctuations and spatial correlations of quantum turbulence in superfluid 3He-B. All of the measurements are performed in the low-temperature regime, where the normal-fluid density is negligible. The quantum turbulence is generated by a vibrating grid. The vortex-line density is found to have large length-scale correlations, indicating large-scale collective motion of vortices. Furthermore, we find that the power spectrum of fluctuations versus… CONTINUE READING