1997 Volume 66 Issue 11 Pages 3453-3460
Measurements of poloidal and radial magnetic field, density, potential, and temperature fluctuations were simultaneously performed at the plasma edge of the TBR tokamak using a especially constructed probe system. Direct cross spectral and bispectral analyses of these fluctuations showed evidences of both linear and nonlinear coupling between electrostatic and magnetic oscillations. Resonances created by external perturbing magnetic fields slightly reduced the linear coupling and almost entirely suppressed the quadratic coupling.
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