Experimental Studies of Relaxation of Two-dimensional Turbulence in Magnetized Electron Plasma Columns |
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2D Ex 2D turbulence angular averages axial length axisymmetric azimuthal B₂ background rotation C. F. Driscoll CALIFORN CALIFORNIA CCD camera images coarse-graining effect confinement convective correlation function cylinder Debye length decay rate density diagnostic density holes diocotron instability diocotron mode dissipation drift dynamics drift motions electron columns endplate ensemble Ensemble-average measurements Equation equilibrium ERSITY evolution Ex B drift exponential decay filament fixed collector fluctuation level gyroradius ideal 2D ideal invariants initial conditions initial hollow column interactions inviscid J. H. Malmberg LIBRARY magnetic field Malmberg-Penning trap mean density meta-equilibrium multi-collector array non-neutral plasmas passive tracer Penning traps Phase Phys Plasma Physics predictions pure electron plasmas R. A. Smith radial position radial profile radius restricted minimum enstrophy Reynolds decomposition SAN DIEGO scales Section shot-to-shot variations shown in Figure spatial spectral space stream function symmetric configurations theoretical turbulent flow two-dimensional UNIVE UNIVERSITY unstable mode velocity versus viscosity vorticity