Nonextensive dust-acoustic solitary waves

Tribeche, M.; Merriche, A.
March 2011
Physics of Plasmas;Mar2011, Vol. 18 Issue 3, p034502
Academic Journal
The seminal paper of Mamun et al. [Phys. Plasmas 3, 702 (1996)] is revisited within the theoretical framework of the Tsallis statistical mechanics. The nonextensivity may originate from the correlation or long-range interactions in the dusty plasma. It is found that depending on whether the nonextensive parameter q is positive or negative, the dust-acoustic (DA) soliton exhibits compression for q<0 and rarefaction for q>0. The lower limit of the Mach number for the existence of DA solitary waves is greater (smaller) than its Maxwellian counterpart in the case of superextensivity (subextensivity).


Related Articles

  • Nonlinear adiabatic models of ion-acoustic waves in dust plasma. Dubinov, A. E.; Sazonkin, M. A. // Technical Physics;Sep2008, Vol. 53 Issue 9, p1129 

    Nonlinear adiabatic models of ion-acoustic waves in a dust plasma are developed. The problem of the structure of subsonic periodic and supersonic solitary ion-acoustic waves is exactly solved analytically under the assumption of a constant charge of dust particles; the critical Mach numbers for...

  • Effect Of Grain Size-Distribution And Nonthermal Ion Distribution On Dust Acoustic Solitons. Annou, K.; Annou, R. // AIP Conference Proceedings;2005, Vol. 799 Issue 1, p303 

    The investigation of the formation of non-linear coherent structures in dusty plasmas taking into account the dust size and non-thermal ion distributions is conducted. Conditions of the existence of solitons in terms of the Mach number, concentration of non-thermal ions, dust charge and the...

  • Ion acoustic solitons in a plasma with two-temperature kappa-distributed electrons. Baluku, T. K.; Hellberg, M. A. // Physics of Plasmas;Jan2012, Vol. 19 Issue 1, p012106 

    Existence domains and characteristics of ion acoustic solitons are studied in a two-temperature electron plasma with both electron components being kappa-distributed, as found in Saturn's magnetosphere. As is the case for double-Boltzmann electrons, solitons of both polarities can exist over...

  • Effect of excess superthermal hot electrons on finite amplitude ion-acoustic solitons and supersolitons in a magnetized auroral plasma. Rufai, O. R.; Bharuthram, R.; Singh, S. V.; Lakhina, G. S. // Physics of Plasmas;2015, Vol. 22 Issue 10, p1 

    The effect of excess superthermal electrons is investigated on finite amplitude nonlinear ionacoustic waves in a magnetized auroral plasma. The plasma model consists of a cold ion fluid, Boltzmann distribution of cool electrons, and kappa distributed hot electron species. The model predicts the...

  • Higher-order contribution to dust-ion acoustic dressed solitons in a warm dusty plasma. El-Bedwehy, N. A. // Physics of Plasmas;Jul2008, Vol. 15 Issue 7, p073709 

    Propagations of ion-acoustic dressed solitons in an unmagnetized dusty plasma consisting of a mixture of hot nonisothermal electrons, warm ions, and high negatively charged warm dust particles have been investigated. The reductive perturbation theory has been employed. At the lowest order of the...

  • Spectral analysis of ion-acoustic soliton excitation. Chang, Hong-Young; Lien, Chuong; Sukarto, Sudewo; Hill, Jacqueline; Raychaudhuri, Santwana; Lonngren, Karl E. // Applied Physics Letters;12/15/1985, Vol. 47 Issue 12, p1274 

    The evolution of the frequency spectrum of a velocity modulated burst of ions from a fine mesh grid in a plasma is measured and interpreted. Initial frequency modulation close to the grid indicates a "ktystron bunching" of the ions. The measured, spectrum far from the grid indicates the...

  • Effect of ion temperature on large-amplitude ion-acoustic solitary waves in relativistic plasma. Chatterjee, Prasanta; Roychoudhury, Rajkumar // Physics of Plasmas;Jul94, Vol. 1 Issue 7, p2148 

    Focuses on the effects of ion temperature on the conditions for existence of solitary waves in a relativistic plasma using Sagdeev's pseudopotential approach. Restriction on the values of the soliton velocity placed by the ion temperature; Effect of ion temperature on the width and amplitude of...

  • Evolution and breaking of ion-acoustic waves. Rosenau, Philip // Physics of Fluids (00319171);Jun88, Vol. 31 Issue 6, p1317 

    A new amplitude equation governing the velocity evolution of ion-acoustic waves in a collisionless plasma is derived: Vtt+(V2)xt=[(1-V2)Vx] x+βVxxtt. From this equation the existence of a critical amplitude threshold is immediately deduced, which leads to a double layer and above which...

  • Negative ion-acoustic solitons in a two-component magnetized plasma. Song, L. T.; Lee, L. C.; Huang, L. // Physics of Fluids (00319171);Jun88, Vol. 31 Issue 6, p1549 

    Ion-acoustic solitons in a two-component low-beta plasma are studied. It is found that under the quasineutrality condition only positive ion-acoustic solitons can exist in such a plasma. When the effect of charge separation is included, both positive and negative solitons can be found for Cs cos...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics