Volume 84, Number 5, December 2008
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||13 November 2008|
Mode-spectral analysis of 2D Coulomb clusters with fluctuating charges
School of Physics, The University of Sydney - New South Wales 2006, Australia
Corresponding author: S.Vladimirov@physics.usyd.edu.au
Accepted: 31 October 2008
The mode spectra of small clusters of dust particles with fluctuating charges are analyzed. Particular attention is paid to the influence of correlated and uncorrelated charge fluctuations on the oscillation mode spectra of these clusters. It is found that the main signature of the correlated charge fluctuations is the shift of the lowest-frequency (shear) mode; other modes are split/shifted according to their mode number and the weight of the shear and compressional parts in their oscillation pattern. This is useful for diagnostics as the character of dust charge fluctuations extracted from the analysis of the cluster mode spectra provides important information on the plasma correlation length.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.27.Gr – Strongly-coupled plasmas / 52.35.-g – Waves, oscillations, and instabilities in plasmas and intense beams
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.