Physics
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008phpl...15b3701g&link_type=abstract
Physics of Plasmas, Volume 15, Issue 2, pp. 023701-023701-7 (2008).
Physics
2
Dusty Or Complex Plasmas, Plasma Crystals, Shock Waves And Discontinuities, Plasma Interactions With Dust And Aerosols
Scientific paper
The effects of nonsteady dust charge variations and weak magnetic field on small but finite amplitude nonlinear dust acoustic wave in electronegative dusty plasma are investigated. The dynamics of the nonlinear wave are governed by a Korteweg-de Vries Burger equation that possesses dispersive shock wave. The weak magnetic field is responsible for the dispersive term, whereas nonsteady dust charge variation is responsible for dissipative term, i.e., the Burger term. The coefficient of dissipative term depends only on the obliqueness of the magnetic field. It is found that for parallel propagation the dynamics of the nonlinear wave are governed by the Burger equation that possesses monotonic shock wave. The relevances of the findings to cometary dusty plasma, e.g., Comet Halley are briefly discussed.
Ehsan Zahida
Ghosh Samiran
Murtaza G.
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