Abstract
A new and convenient method to experimentally determine nonlinear dynamical models of plasma turbulence is described. It is based on a novel use of feedback control which generates information about the model without introducing additional unknowns. The method is applied to an ExB turbulence in the Columbia Linear Machine to determine the linear eigenfrequencies and nonlinear coupling coefficients of a three wave coupling model directly from experimental data. (c) 1999 The American Physical Society.
Published Version
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