Nonlinear positron acoustic solitary waves

Tribeche, Mouloud; Aoutou, Kamel; Younsi, Smain; Amour, Rabia
July 2009
Physics of Plasmas;Jul2009, Vol. 16 Issue 7, p072103
Academic Journal
The problem of nonlinear positron acoustic solitary waves involving the dynamics of mobile cold positrons is addressed. A theoretical work is presented to show their existence and possible realization in a simple four-component plasma model. The results should be useful for the understanding of the localized structures that may occur in space and laboratory plasmas as new sources of cold positrons are now well developed.


Related Articles

  • Dynamical behavior of the soliton formation and propagation in magnetized plasma. Das, G. C.; Sarma, J.; Gao, Yi-Tian; Uberoi, C. // Physics of Plasmas;Jun2000, Vol. 7 Issue 6 

    Despite many theoretical studies on soliton formation and its propagation in plasmas, no study with multicomponent magnetized plasma has derived the special nonlinear wave equation, called the Zakharov-Kuznetsov equation [V. E. Zakharov and E. A. Kuznetsov, Sov. Phys. JETP 39, 285 (1974)]. Thus,...

  • Spin solitons in magnetized pair plasmas. Brodin, G.; Marklund, M. // Physics of Plasmas;Nov2007, Vol. 14 Issue 11, p112107 

    A set of fluid equations, taking into account the spin properties of the electrons and positrons in a magnetoplasma, are derived. The magnetohydrodynamic limit of the pair plasma is investigated. It is shown that the microscopic spin properties of the electrons and positrons can lead to...

  • Propagation of solitary waves in relativistic electron-positron-ion plasmas with kappa distributed electrons and positrons. Shah, Asif; Mahmood, S.; Haque, Q. // Physics of Plasmas;Nov2011, Vol. 18 Issue 11, p114501 

    Electrostatic ion acoustic solitary waves are studied in a plasma system comprising of relativistic ions, kappa distributed electrons, and positrons. The increase in the relativistic streaming factor and positron and electron kappa parameters cause the soliton amplitude to thrive. However, the...

  • Use of the positron as a plasma particle. Surko, C. M.; Murphy, T. J. // Physics of Fluids B: Plasma Physics;Jun90, Vol. 2 Issue 6, p1372 

    The use of positrons in laboratory plasma physics experiments is considered. Recent progress in this area is discussed, including the creation of a single-component positron plasma in the laboratory. Specific applications of such antimatter plasmas are also discussed, with emphasis on areas...

  • Recent progress on the ATHENA positron accumulator. Jørgensen, L. V.; van der Werf, D. P.; Watson, T. L.; Charlton, M.; Collier, M. J. T. // AIP Conference Proceedings;2002, Vol. 606 Issue 1, p35 

    The Positron Accumulator for the ATHENA anti-hydrogen experiment at CERN, Geneva has recently been upgraded with a new 50 mCi [sup 22]Na β[sup +]-radioactive source. Following this, rapid progress has been made in optimizing and characterizing the properties of the positron plasma. The...

  • Low-energy positron-matter interactions using trap-based beams. Gilbert, S. J.; Sullivan, J. P.; Marler, J. P.; Barnes, L. D.; Schmidt, P.; Buckman, S. J.; Surko, C. M. // AIP Conference Proceedings;2002, Vol. 606 Issue 1, p24 

    We present an overview of nonneutral plasma techniques developed to study the interaction of low-energy positrons with atoms and molecules. Both scattering and positron annihilation experiments are described. The scattering experiments provide the first state-resolved cross sections for both...

  • Practical limits on positron accumulation and the creation of electron-positron plasmas. Greaves, R. G.; Surko, C. M. // AIP Conference Proceedings;2002, Vol. 606 Issue 1, p10 

    The tasks of accumulating large numbers of positrons, creating high-density positron plasmas, and confining electron-positron plasmas present a number of technical challenges. Some practical considerations and limitations of common confinement schemes are discussed. A novel design for a...

  • Relativistic magnetosonic solitons with reflected particles in electron–positron plasmas. Alsop, David; Arons, Jonathan // Physics of Fluids (00319171);Apr88, Vol. 31 Issue 4, p839 

    The presence of magnetically reflected particles is shown to allow the existence of large amplitude magnetosonic solitary waves in relativistic electron–positron plasmas. If the flow is assumed to contain a single loop of gyrating particles, self-consistent structures are found with peak...

  • Decay of Solitons in an Isotropic Collisionless Quasineutral Plasma with Isothermal Pressure. Bakholdin, I. B.; Zharkov, A. A.; Il�ichev, A. T. // Journal of Experimental & Theoretical Physics;Jul2000, Vol. 91 Issue 1, p111 

    Soliton-type solutions of the complete unreduced system of transport equations describing the plane-parallel motions of an isotropic collisionless quasineutral plasma in a magnetic field with constant ion and electron temperatures are studied. The regions of the physical parameters for fast and...


Read the Article


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

Try another library?
Sign out of this library

Other Topics