Spectral Transfer in Plasma Turbulence
- The inverse energy cascade in the turbulent spectra [1-2] leads to the generation of the broadband turbulence.
- There are indications that a local (cascade-type) transfer may co-exist and even be replaced by a non-local spectral transfer. In this case strong coherent structures, such as zonal flows may be spectrally coupled to unstable drift waves [3].
[1] Inverse energy cascade correlated with turbulent-structure generation in toroidal plasma,
Xia H. and Shats M.G. Physical Review Letters 91 (2003) 155001. [PDF]
[2] Spectral energy transfer and generation of turbulent structures in toroidal plasma,
Xia H. and Shats M.G., Physics of Plasmas 11 (2004) 561-571. [PDF]
[3] Spectral condensation of turbulence in plasmas and fluids and its role in low-to-high phase transitions in toroidal plasma,Shats M.G., Xia H., Punzmann H.,Physical Review E, 71, 046409 (2005) [PDF]
