Role of nonlinear coupling and density fluctuations in magnetic-fluctuation-induced particle transport |
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| Authors: | Lin L Ding W X Brower D L Bergerson W F Carter T A Yates T F Almagri A F Chapman B E Sarff J S |
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| Institution: | Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA. |
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| Abstract: | Three-wave nonlinear coupling among spatial Fourier modes of density and magnetic fluctuations is directly measured in a magnetically confined toroidal plasma. Density fluctuations are observed to gain (lose) energy from (to) either equilibrium or fluctuating fields depending on the mode number. Experiments indicate that nonlinear interactions alter the phase relation between density and magnetic fluctuations, leading to strong particle transport. |
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