Arbitrary amplitude quantum dust ion-acoustic solitary waves

Details Arbitrary amplitude quantum dust ion-acoustic solitary waves Arbitrary amplitude quantum dust ion-acoustic solitary waves

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008phpl...15c3702t&link_type=abstract

Physics of Plasmas, Volume 15, Issue 3, pp. 033702-033702-7 (2008).

Physics

6

Dusty Or Complex Plasmas, Plasma Crystals, Solitons, Bgk Modes, Electrostatic Waves And Oscillations

Scientific paper

The one-dimensional quantum hydrodynamic model for a three-species quantum plasma is used to study the quantum counterpart of the well known dust ion-acoustic (DIA) wave. Two cases of physical interest are investigated, namely positive and negative dust charge. It is shown that only rarefactive solitary potentials associated with nonlinear quantum DIA (QDIA) waves involving electron density deeps can exist. The QDIA soliton experiences a spreading and the quantum effects tend to make it wider. Under certain conditions, the soliton enlarges and its pulse shape evolves into a broad central flat-bottomed (or table-bottomed) soliton as a limiting-amplitude member of the QDIA soliton family. Linear stability analysis as well as quasineutral solutions are succinctly outlined. The investigation could be of relevance to astrophysical quantum dusty plasmas.

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