Abstract
The nonlinear amplitude modulation of longitudinal dust lattice waves (LDLWs) propagating in a dusty plasma crystal is investigated in a continuum approximation. It is shown that long wavelength LDLWs are modulationally stable, while shorter wavelengths may be unstable. The possibility for the formation and propagation of different envelope localized excitations is discussed. It is shown that the total grain displacement bears a (weak) constant displacement (zeroth harmonic mode), due to the asymmetric form of the nonlinear interaction potential. The existence of asymmetric envelope localized modes is predicted. The types and characteristics of these coherent nonlinear structures are discussed. (C) 2004 American Institute of Physics.
Original language | English |
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Pages (from-to) | 1384-1393 |
Number of pages | 10 |
Journal | Physics of Plasmas |
Volume | 11 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2004 |
ASJC Scopus subject areas
- General Physics and Astronomy
- Condensed Matter Physics