Effect of nonuniform dust charge on dust-acoustic soliton in an inhomogeneous plasma

The propagation of dust-acoustic solitons in an inhomogeneous plasma is studied for the case in which the equilibrium dust density is a constant but the equilibrium dust charge is spatially nonuniform and determined by the self-consistent charging equation. It is shown that the amplitude of the solitons is inversely proportional to the one-fourth power of the equilibrium dust charge number and only compressive solitons exist in this case. When the soliton propagates from high to low density regions, its amplitude and width increases with distance while its velocity shows complex variations. The spatial distribution of the relative amplitude of the dust density perturbation exhibits a transition from decrease to increase, which differs significantly from that of the potential perturbation.

[1]  J. Ma,et al.  Dust–ion–acoustic soliton in an inhomogeneous collisional plasma , 2004 .

[2]  Abdullah Al Mamun,et al.  Dust acoustic solitary waves and double layers in a dusty plasma with two-temperature trapped ions , 2004 .

[3]  P. Shukla.  Low-frequency electromagnetic solitary and shock waves in an inhomogeneous dusty magnetoplasma , 2003 .

[4]  S. El-Labany,et al.  Dust acoustic solitary waves and double layers in a dusty plasma with trapped electrons , 2003 .

[5]  V. Yaroshenko,et al.  Dust-acoustic instability in inhomogeneous complex plasmas , 2003 .

[6]  M. Ishak-Boushaki,et al.  Effect of grain size-distribution on dust acoustic solitons , 2003 .

[7]  G. Morfill,et al.  Weakly dissipative dust-ion-acoustic solitons. , 2003, Physical review. E, Statistical, nonlinear, and soft matter physics.

[8]  S. El-Labany,et al.  Dust acoustic solitary waves and double layers in a dusty plasma with an arbitrary streaming ion beam , 2003 .

[9]  S. Mahmood,et al.  Dust acoustic solitary wave in the presence of dust streaming , 2003 .

[10]  Abdullah Al Mamun,et al.  Introduction to Dusty Plasma Physics , 2001 .

[11]  Xiaoping Liang,et al.  Experimental observation of ion-acoustic waves in an inhomogeneous dusty plasma , 2001 .

[12]  Abdullah Al Mamun,et al.  Low-frequency electrostatic dust-modes in a strongly coupled dusty plasma with dust charge fluctuations , 2000 .

[13]  K. He,et al.  Dust-acoustic solitary waves and double layers in dusty plasma with variable dust charge and two-temperature ions , 1999 .

[14]  K. He,et al.  Effect of adiabatic variation of dust charges on dust-acoustic solitary waves , 1998 .

[15]  N. N. Rao,et al.  Linear and nonlinear dust-acoustic waves in inhomogeneous dusty plasmas , 1998 .

[16]  S. G. Tagare.  Dust-acoustic solitary waves and double layers in dusty plasma consisting of cold dust particles and two-temperature isothermal ions , 1997 .

[17]  Ma Jinxiu,et al.  Dust-Acoustic Soliton in a Streaming Plasma , 1997 .

[18]  J. Ma,et al.  Dust-acoustic soliton in a dusty plasma , 1997 .

[19]  Abdullah Al Mamun,et al.  Solitary potentials in dusty plasmas , 1996 .

[20]  P. Shukla,et al.  Large amplitude ion-acoustic solitons in a dusty plasma , 1992 .

[21]  N. N. Rao,et al.  DUST -ACOUSTIC WAVES IN DUSTY PLASMAS , 1990 .

[22]  Ronald C. Davidson,et al.  Methods in Nonlinear Plasma Theory , 1973 .