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Updated: Jul 13, 2026

AC Electrokinetic Phenomena Generated by Microelectrode Structures
Published on: July 29, 2008
First laboratory observation of freely propagating electrostatic waves produced by intense, localized field
1Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
Abstract:
Freely propagating electrostatic waves (free modes) are observed to be produced by intense, localized field structures in laboratory measurements performed in an unmagnetized plasma in a state of strong Langmuir turbulence. The freely traveling waves conform to the Langmuir dispersion relation and have an average frequency which is approximately 11% higher than the average frequency of the localized field structures. The observations are consistent with the predictions of strong Langmuir turbulence theory.
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