Arbitrary amplitude dust ion-acoustic shock waves in a dusty plasma with positive and negative ions

A.A. Mamun, Padma Shukla, Bengt Eliasson

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Arbitrary amplitude dust ion-acoustic shock waves in a multi-ion dusty plasma (composed of electrons, light positive ions, heavy negative ions, and stationary massive dust grains) has been studied. For this purpose, the coupled Poisson and dust-charging equations, which accounts for the fluctuation of charges on static dust, have been numerically solved. The large amplitude shocks are associated with a sudden decrease in the electrostatic potential and of the dust grain charge. It is found that in the lower speed limit small amplitude shocks are formed, while in the larger speed limit large amplitude shocks are formed. It is anticipated that the profiles and amplitudes of the DIA shocks predicted here will be observed in forthcoming laboratory and space experiments.
Original languageEnglish
Article number114503
Number of pages4
JournalPhysics of Plasmas
Volume16
Issue number11
DOIs
Publication statusPublished - 13 Nov 2009

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dusty plasmas
positive ions
negative ions
shock waves
dust
shock
acoustics
ions
light ions
low speed
charging
heavy ions
electrostatics
profiles
electrons

Keywords

  • dusty plasmas
  • ion-acoustic shocks

Cite this

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Arbitrary amplitude dust ion-acoustic shock waves in a dusty plasma with positive and negative ions. / Mamun, A.A.; Shukla, Padma; Eliasson, Bengt.

In: Physics of Plasmas, Vol. 16, No. 11, 114503, 13.11.2009.

Research output: Contribution to journalArticle

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T1 - Arbitrary amplitude dust ion-acoustic shock waves in a dusty plasma with positive and negative ions

AU - Mamun, A.A.

AU - Shukla, Padma

AU - Eliasson, Bengt

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AB - Arbitrary amplitude dust ion-acoustic shock waves in a multi-ion dusty plasma (composed of electrons, light positive ions, heavy negative ions, and stationary massive dust grains) has been studied. For this purpose, the coupled Poisson and dust-charging equations, which accounts for the fluctuation of charges on static dust, have been numerically solved. The large amplitude shocks are associated with a sudden decrease in the electrostatic potential and of the dust grain charge. It is found that in the lower speed limit small amplitude shocks are formed, while in the larger speed limit large amplitude shocks are formed. It is anticipated that the profiles and amplitudes of the DIA shocks predicted here will be observed in forthcoming laboratory and space experiments.

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KW - ion-acoustic shocks

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