Abstract
The amplitude modulation of dust lattice waves (DLWs) propagating in a two-dimensional hexagonal dust crystal is investigated in a continuum approximation, accounting for the effect of dust charge polarization (dressed interactions). A dusty plasma crystalline configuration with constant dust grain charge and mass is considered. The dispersion relation and the group velocity for DLWs are determined for wave propagation in both longitudinal and transverse directions. The reductive perturbation method is used to derive a (2+1)-dimensional nonlinear Schrodinger equation (NLSE). New expressions for the coefficients of the NLSE are derived and compared, for a Yukawa-type potential energy and for a
Original language | English |
---|---|
Article number | 122304 |
Journal | Physics of Plasmas |
Volume | 13 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2006 |
ASJC Scopus subject areas
- General Physics and Astronomy
- Condensed Matter Physics