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Experimental tasks
• Spectra
Extend to small scale; wavenumber dependence (Taylor hyp.); density, flow
• Verify existence of inertial range
• Determine if decorrelation rate has dependence on B0
Bispectrum in small scales, response to perturbation
• Measure anisotropy in small scales or B2(k, k| |, )
• Physics of two high frequency subranges
Dissipation? two-fluid effects? kinetic Alfvén wave?
• Driving sources besides tearing
High k in PPCD, electrostatic, edge localized
• MRX: b/B ~ 1 region - effect of guide field on Alfvén waves, anisotropy, etc.
• MRX, SSPX, SSX: decaying turbulence - validity of Kulsrud magnetogenesis
• Transport: /| |?. is there any resonant particle transport?
Theory
• Properties of turbulence under variation of mean field strength in spectra that peak at low k, and high k
• Measurement of spectral energy transferCorrelation to wave physics
• Effect of collisionless damping on spectrum; effect of anisotropy on dissipation• Analytic theory for anisotropic spectrum in RMHD (a la quasi geo turb)• Inverse cascade analysis closure theory - do Alfvénic interactions induce inverse
energy cascade?• Compressible turbulence - issues?
Magnetic fluctuations, density distribution• Thermal conductivity
Braginskii, stochastic field• Two fluid (Hall effects)
• Explanation of large for cosmic rays• Thermal conductivity vs. electron diffusivity in chaotic field?
Theory continued
• Mirror spectrum
• Diffusion in multi-scale tangled field - firmer footing?
• Use of MHD turbulence measurements in transport theories?
• Checking of diffusion and heat conduction theories with experiments?
MST, MRX
• Full 3D simulations of heat transport (collisions, e-e energy exchange, etc.)
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