TITLE

Influence of superthermal and trapped electrons on oblique propagation of ion-acoustic waves in magnetized plasma

AUTHOR(S)
Ahmadihojatabad, N.; Abbasi, H.; Pajouh, H. Hakimi
PUB. DATE
November 2010
SOURCE
Physics of Plasmas;Nov2010, Vol. 17 Issue 11, p112305
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Effects of superthermal and trapped electrons on the oblique propagation of linear and nonlinear ion-acoustic waves in an electron-ion plasma in the presence of a uniform external magnetic field are investigated. In order to model the superthermal electrons, a Lorentzian (kappa) velocity distribution function has been employed. The ions are cold and their dynamics are studied by hydrodynamic equations. First, the linear dispersion relation of the fast and slow modes are obtained. It is shown that the superthermal electrons cause the both modes to propagate with smaller phase velocities. Then, modified Korteweg-de Vries equations describing the propagation of nonlinear slow and fast ion-acoustic waves are derived. It is shown that the presence of superthermal and trapped electrons has great influence on the nature of magnetized ion-acoustic solitons. The dependency of soliton attributes to the parameters associated with the superthermality and trapping mechanism will be shown.
ACCESSION #
55509514

 

Related Articles

  • Ion acoustic solitary and shock waves with nonextensive electrons and thermal positrons in nonplanar geometry. Sahu, Biswajit // Astrophysics & Space Science;Apr2012, Vol. 338 Issue 2, p251 

    The nonlinear wave structures of ion acoustic waves (IAWs) in an unmagnetized plasma consisting of nonextensive electrons and thermal positrons are studied in bounded nonplanar geometry. Using reductive perturbation technique we have derived cylindrical and spherical Korteweg-de Vries-Burgers'...

  • Small amplitude electron-acoustic solitary waves in a plasma with superthermal hot electrons. Bedi, Chanchal; Chahal, Balwinder // Astrophysics & Space Science;Mar2013, Vol. 344 Issue 1, p161 

    In the present investigation, Electron acoustic solitons in a plasma consisting of cold electrons, superthermal hot electrons and stationary ions are studied. The basic properties of small but finite amplitude solitary potential structures that may exist in a given plasma system have been...

  • Oblique collision of modified Korteweg-de Vries ion-acoustic solitons. Nakamura, Y.; Bailung, H.; Lonngren, K.E. // Physics of Plasmas;Sep99, Vol. 6 Issue 9, p3466 

    Investigates two-dimensional propagation and oblique collision of modified Korteweg-de Vries (mKdV) ion-acoustic solitons in a plasma with negative ions. Resonance interaction of compressive and refractive mKdV solutions at a particular amplitude; Positive phase shift during the interaction.

  • Weakly relativistic effect in the formation of ion-acoustic solitary waves in a positive ion-beam plasma. Kalita, B. C.; Das, R.; Sarmah, H. K. // Canadian Journal of Physics;Mar2010, Vol. 88 Issue 3, p157 

    Relativistic solitons are investigated in a plasma with positive-ion beams using the Korteweg–de Vries (KdV) equation considering relativistic effects smaller for γi ≍ O(v2/c2) and γe ≍ O(u2/c2), and larger for γi ≍ O(v4/c4) and γe ≍ O(u4/c4), where...

  • Reflection of ion acoustic solitons in a plasma having negative ions. Chauhan, Sarvesh S.; Malik, H.K.; Dahiya, R.P. // Physics of Plasmas;Nov96, Vol. 3 Issue 11, p3932 

    Investigates the reflection of compressive and rarefractive ion acoustic solitons propagating in an inhomogeneous plasma in the presence of negative ions. Derivation of modified Korteweg-de Vries equations for incident and reflected solitons; Relationship of the amplitude of incident and...

  • Nonthermal effects on the ion-acoustic solitons in Lorentzian electron-ion plasmas. Jung, Young-Dae; Hong, Woo-Pyo // Physics of Plasmas;Feb2011, Vol. 18 Issue 2, p024502 

    The nonthermal effects on the propagation of the ion-acoustic soliton are investigated in generalized Lorentzian electron-ion plasmas. The soliton solution of the Korteweg-de Vries equation is obtained as a function of the spectral index and modified stretched coordinate in the generalized...

  • Electrostatic Korteweg-deVries solitary waves in a plasma with Kappa-distributed electrons. Choi, C.-R.; Min, K.-W.; Rhee, T.-N. // Physics of Plasmas;Sep2011, Vol. 18 Issue 9, p092901 

    The Korteweg-deVries (KdV) equation that describes the evolution of nonlinear ion-acoustic solitary waves in plasmas with Kappa-distributed electrons is derived by using a reductive perturbation method in the small amplitude limit. We identified a dip-type (negative) electrostatic KdV solitary...

  • Nonplanar solitons in a warm electronegative plasma with electron nonextensivity effects. Shan, S.; Rehman, Aman-ur // Astrophysics & Space Science;Aug2014, Vol. 352 Issue 2, p593 

    The nonlinear propagation of ion-acoustic waves is studied in an unmagnetized collissionless electronegative plasma, whose constituents are the inertial warm positive/negative ions and q-distributed nonextensive electrons. The latter have strong impact on the linear dispersion relation. However,...

  • Ion acoustic solitons in unmagnetized inhomogeneous multi-ion component plasmas with vortex distributed electrons. Shah, Asif; Mahmood, S.; Haque, Q. // Physics of Plasmas;Nov2010, Vol. 17 Issue 11, p112320 

    The ion acoustic solitons are studied in an inhomogeneous multi-ion component plasma in the presence of heavy and light adiabatic ions and two temperature electrons with vortex distribution. The modified Korteweg-de Vries equation with an additional term due to density gradients is derived by...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics