Solitons in dusty plasmas with positive dust grains

Although “typical” micrometer-sized dust grains in a space or laboratory plasma are often negatively charged because of collisions with the mobile electrons, there are environments in which grains may take on a positive charge. We consider a dusty plasma composed of electrons, positive ions and positive dust grains, and use the fluid dynamic paradigm to identify existence domains in parameter space for both dust-acoustic (DA) and dust-modified ion-acoustic (DIA) solitons. Only positive potential DA solitons are found. This represents an expected antisymmetry with the case of negative dust, where previously only negative solitons were reported. However, whereas for negative dust DIA solitons of either sign of potential may exist, we find that for the case of positive dust, DIA solitons are restricted to positive potentials only. The results for both positive and negative dust are consistent with an hypothesis that, in the absence of flows, the sign(s) of the soliton potential coincide(s) with the sign(s) o...

[1]  J. F. Mckenzie,et al.  Conservation laws for steady flow and solitons in a multifluid plasma revisited , 2007 .

[2]  Simon F. Green,et al.  Composition of jovian dust stream particles , 2006 .

[3]  T. Cattaert,et al.  Existence domains for nonlinear structures in complex two-ion-temperature plasmas , 2006 .

[4]  M. Djebli,et al.  Electrostatic nonlinear waves in a dusty plasma with positive dust grains and two electron species , 2005, Journal of Plasma Physics.

[5]  M. Hellberg,et al.  Note on rarefactive and compressive ion-acoustic solitons in a plasma containing two ion species , 2005 .

[6]  T. Cattaert,et al.  Ion- and dust-acoustic solitons in dusty plasmas: Existence conditions for positive and negative potential solutions , 2005 .

[7]  T. Cattaert,et al.  Potential hill electron-acoustic solitons and double layers in plasmas with two electron species , 2005 .

[8]  M. Hellberg,et al.  Compressive and rarefactive ion-acoustic solitons in a two component electron plasma , 2005, Journal of Plasma Physics.

[9]  J. F. Mckenzie,et al.  Compressive and rarefactive ion-acoustic solitons in bi-ion plasmas , 2004 .

[10]  G. Lakhina,et al.  Gas-dynamic description of electrostatic solitons , 2004 .

[11]  N. Dangelo.  Low-frequency waves in collisional positive dust plasmas , 2004 .

[12]  Abdullah Al Mamun,et al.  Solitons, shocks and vortices in dusty plasmas , 2003 .

[13]  P. H. Sakanaka,et al.  Localized non-linear solutions in multiply-charged dusty plasmas , 2003 .

[14]  M. Horányi.  Dusty Plasmas in the Solar System , 2002 .

[15]  O. Havnes.  Dusty Plasmas in the Ionosphere and its Environment , 2002 .

[16]  Abdullah Al Mamun,et al.  Nonlinear waves and structures in dusty plasmas , 2002 .

[17]  J. F. Mckenzie.  The ion-acoustic soliton: A gas-dynamic viewpoint , 2002 .

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

[19]  B. James,et al.  Positively charged particles in dusty plasmas. , 2001, Physical review. E, Statistical, nonlinear, and soft matter physics.

[20]  P. Shukla,et al.  Near-wall layer of a positive dust-electron plasma in the presence of a nonequilibrium charging process , 2001 .

[21]  P. Shukla,et al.  Bohm criterion for a plasma composed of electrons and positive dust grains. , 2000, Physical review. E, Statistical, nonlinear, and soft matter physics.

[22]  P. Shukla.  New collective processes in dusty plasmas: applications to space and laboratories , 2000 .

[23]  P. Shukla,et al.  Dust acoustic wave in a thermal dusty plasma. , 2000, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[24]  Abdullah Al Mamun,et al.  Large amplitude electrostatic solitary structures in a hot non- thermal dusty plasma , 2000 .

[25]  P. H. Sakanaka,et al.  Large Amplitude Solitons and Double Layers in Multicomponent Dusty Plasmas , 2000 .

[26]  Mihaly Horanyi,et al.  Global Dynamics of Charged Dust Particles in Planetary Magnetospheres , 1999 .

[27]  F. Verheest.  Dusty plasmas in application to astrophysics , 1999 .

[28]  L. Gelinas,et al.  First observation of meteoritic charged dust in the tropical mesosphere , 1998 .

[29]  R. Merlino,et al.  Dust acoustic waves in a direct current glow discharge , 1997 .

[30]  R. Merlino,et al.  Experiments on waves and instabilities in dusty plasmas , 1997 .

[31]  P. Shukla,et al.  The Physics of Dusty Plasmas: Proceedings of the Sixth Workshop , 1996 .

[32]  L. I. Næsheim,et al.  First detection of charged dust particles in the Earth's mesosphere , 1996 .

[33]  R. Merlino,et al.  Laboratory observation of the dust-acoustic wave mode , 1995 .

[34]  U. D. Angelis,et al.  The physics of dusty plasmas , 1992 .

[35]  N. Thomas,et al.  Comet P/Halley's dust production rate at Giotto encounter derived from Halley Multicolour Camera observations , 1991 .

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

[37]  J. Zarnecki,et al.  Giotto observations of Comet Halley dust , 1987, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[38]  N. A. Krall,et al.  Principles of Plasma Physics , 1973 .