Charge fluctuation instability of the dust lattice wave

G. Morfill, A. V. Ivlev, J. R. Jokipii

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Taking into account the statistical charge fluctuations on microspheres embedded in a low-pressure gas discharge, a stochastic differential equation for the one-dimensional dust lattice wave is derived. Using this equation, the nonstochastic differential equations for the mean particle displacement and for the second moments of the displacement and velocity are obtained. The analysis of the equation for the second moments shows that for sufficiently small gas pressure the charge fluctuations can result in exponential growth of the average energy of lattice oscillations.

Original languageEnglish (US)
Pages (from-to)971-974
Number of pages4
JournalPhysical review letters
Issue number5
StatePublished - Jan 1 1999

ASJC Scopus subject areas

  • General Physics and Astronomy


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