Observation of dust acoustic multi-solitons in a strongly coupled dusty plasma

被引：19

作者：

Boruah, A. ^{[1
]}

Sharma, S. K. ^{[1
]}

Nakamura, Y. ^{[1
]}

Bailung, H. ^{[1
]}

机构：

[1] Inst Adv Study Sci & Technol, Div Phys Sci, Gauhati 781035, Assam, India

来源：

PHYSICS OF PLASMAS | 2016年 / 23卷 / 09期

关键词：

MULTICOMPONENT PLASMA; WAVES; SOLITARY; SHOCKS;

D O I：

10.1063/1.4962566

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The excitation and propagation of low frequency dust acoustic multi-solitons are investigated in an unmagnetized strongly coupled dusty plasma. A floating 2D dusty medium is produced in an RF discharge Ar plasma with silica micro-particles. Dust acoustic perturbations are excited by applying a negative sinusoidal pulse of frequency 1-2 Hz and amplitude 4-20V to an exciter grid. An initial large amplitude dust density compression breaks into a number of solitary pulses which are identified as dust acoustic solitons. The observed multi-soliton evolution is compared with numerical simulations of modified Korteweg de Vries (KdV)-Burger equation. The characteristics of the generated solitons are in good agreement with the theory. Published by AIP Publishing.

引用

页数：6

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