Dusty plasma experiment to confirm an expression for the decay of autocorrelation functions.
basic_science · Level V
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- Record sourced from PubMed, PMID 30253506.
- Also identified by DOI 10.1103/PhysRevE.98.023201.
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Abstract
Statistical physicists recently proposed an expression for an autocorrelation function (ACF) [Belousov and Cohen, Phys. Rev. E 94, 062124 (2016)2470-004510.1103/PhysRevE.94.062124] that has, until now, not been tested experimentally. The expression captures the early behavior of the ACF decay, when the ACF is flattened. Using experimental data from a nonequilibrium steady-state dusty plasma, we confirm that the expression's use extends to liquidlike strongly coupled plasmas. A transition in the shape of the ACF is identified, and we suggest that it corresponds to the onset of collisional scattering.