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Time-resolved measurements of the density fluctuations in ion phase space
Journal article   Open access   Peer reviewed

Time-resolved measurements of the density fluctuations in ion phase space

Ahmed Diallo and Frederick Skiff
Physics of plasmas, Vol.13(5), pp.055705-055705-7
05/01/2006
DOI: 10.1063/1.2179056
url
http://infoscience.epfl.ch/record/120351View
Open Access

Abstract

A two-point correlation function measurement of the ion density fluctuations is presented. Using two laser-induced fluorescence (LIF) detection systems, the density fluctuation is resolved in time, ion parallel velocity, and space (along the magnetic field). The measurements reveal two components of the density fluctuations, one of which is explained by fluid theory. The other component is ion-velocity-dependent and is newly identified. In addition to the density fluctuation measurements, a velocity-resolved estimate of the fluctuation-induced transport flux using correlations between a Langmuir probe and LIF is reported.

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