Collective Modes in Strongly Correlated Yukawa Liquids: Waves in Dusty Plasmas
- 26 June 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (26) , 6030-6033
- https://doi.org/10.1103/physrevlett.84.6030
Abstract
We determine the collective mode structure of a strongly correlated Yukawa fluid, with the purpose of analyzing wave propagation in a strongly coupled dusty plasma. We identify a longitudinal plasmon and a transverse shear mode. The dispersion is characterized by a low- acoustic behavior, a frequency maximum well below the plasma frequency, and a high- merging of the two modes around the Einstein frequency of localized oscillations. The damping effect of collisions between neutrals and dust grains is estimated.
Keywords
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