Modulational instability of dust-acoustic and dust-ion-acoustic waves
Modulational instability of dust-acoustic and dust-ion-acoustic waves
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DOI：
10.1103/physreve.58.6517
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发表时间：
1998-11
影响因子：
2.4
通讯作者：
M. Amin;G. Morfill;P. Shukla
中科院分区：
文献类型：
--
作者：
M. Amin;G. Morfill;P. Shukla
使用标准的还原扰动技术，导出了非线性薛定谔方程，以研究未磁化尘埃等离子体中有限振幅尘埃声学（DA）和尘埃离子声学（DIA）波对抗斜扰动（相对于载波的传播方向）的调制不稳定性。结果表明，DA 波和 DIA 波都是调制不稳定的。波包的可能静止状态可以表现为包络孤子。
Using the standard reductive perturbation technique, a nonlinear Schrödinger equation is derived to study the modulational instability of finite amplitude dust-acoustic (DA) and dust-ion-acoustic (DIA) waves against oblique perturbations (with respect to the propagation direction of the carrier waves) in an unmagnetized dusty plasma. It is shown that both the DA and DIA waves are modulationally unstable. Possible stationary states of the wave packets can appear as envelope solitons.