Abstract
The chaotic regime encountered in electrohydrodynamic instability of an insulating liquid subjected to space-charge-limited unipolar injection has been investigated experimentally. Two types of behavior of the power spectra of the intensity fluctuations have been characterized: an exponential decay obtained when viscous terms are dominant and a power-law decay obtained when inertial terms are dominant. Emphasis is put on the quasiuniversality of these behaviors and this is discussed in relation to the phenomenon of smallscale intermittency.
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