Modulational instability of dust-lattice waves in a plasma crystal

被引：13

作者：

Amin, MR ^{[1
]}

Morfill, GE

Shukla, PK

机构：

[1] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany

[2] Jahangirnagar Univ, Dept Phys, Dhaka 1342, Bangladesh

[3] Ruhr Univ Bochum, Fak Phys & Astron, Inst Theoret Phys 4, D-44780 Bochum, Germany

来源：

PHYSICA SCRIPTA | 1998年 / 58卷 / 06期

关键词：

D O I：

10.1088/0031-8949/58/6/015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A nonlinear Schrodinger equation for the propagation of a dust-lattice wave in a one-dimensional chain of a plasma crystal is derived by using the Krylov-Bogoliubov-Mitropolsky (KBM) perturbation technique. The resulting equation is then analyzed to obtain a nonlinear dispersion relation for the wave envelope. It has been found that the dust-lattice wave is modulationally unstable for long wavelength perturbations and the modulationally unstable wave propagates as an envelope soliton. The importance of this investigation in present-day laboratory experiments for dust-plasma crystallization is pointed out.

引用

页码：628 / 631

页数：4

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