TITLE

Self-focusing of intense high frequency electromagnetic waves in a collisional magnetoactive plasma

AUTHOR(S)
Niknam, A. R.; Aliakbari, A.; Majedi, S.; Haji Mirzaei, F.; Hashemzadeh, M.
PUB. DATE
November 2011
SOURCE
Physics of Plasmas;Nov2011, Vol. 18 Issue 11, p112305
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The self-focusing of an intense electromagnetic beam in a collisional magnetoactive plasma has been investigated by the perturbation method. Considering the relativistic and ponderomotive nonlinearities and the first three terms of perturbation expansion for the electron density and velocity, the nonlinear wave equation is obtained. This wave equation is solved by applying the source dependent expansion method and the evolution of electromagnetic beam spot-size is discussed. It is shown that the laser spot-size decreases with increasing the collision frequency and external magnetic field strength.
ACCESSION #
67538212

 

Related Articles

  • Electron Bernstein wave excitation by counterpropagating electromagnetic waves in a plasma. Kumar, Asheel; Tripathi, V. K. // Physics of Plasmas;Oct2005, Vol. 12 Issue 10, p102308 

    Two high-power counterpropagating electromagnetic waves (ω1,k1x⁁) and (ω2,-k2x⁁) in a low-density plasma in the presence of a static magnetic field Bsz⁁, drive an electron Bernstein wave at the beat frequency ω=ω1-ω2 and k=(k1+k2)x⁁, when...

  • Generation of magnetic field, vortices and relativistic particles by the nonpotential ponderomotive force. Tsintsadze, Nodar L.; Mima, Kunioki; Tsintsadze, Levan N.; Nishikawa, Kyoji // Physics of Plasmas;Oct2002, Vol. 9 Issue 10, p4270 

    Effects of nonpotential ponderomotive force on kinetic phenomena in a plasma are presented. The particle distribution function is derived, which allows one to calculate the particle and heat fluxes. A novel relativistic hydrodynamic equation of motion, incorporating self-generated magnetic...

  • Non-neutral ion plasmas and crystals, laser cooling, and atomic clocks*. Bollinger, J.J.; Wineland, D.J.; Dubin, Daniel H.E. // Physics of Plasmas;May94, Vol. 1 Issue 5, p1403 

    Discusses experimental work which uses Penning and Paul traps to confine non-neutral ion plasmas. Use of a static uniform magnetic field and a static electric field to confine ions by Penning traps; Ponderomotive force used by the Paul trap; Use of ion trap plasmas in atomic clocks.

  • On the higher-order solution of the dust-acoustic solitary waves in a warm magnetized dusty plasma with dust charge variation. El-Labany, S. K.; Moslem, Waleed M.; El-Taibany, W. F.; Mahmoud, M. // Physics of Plasmas;Jun2004, Vol. 11 Issue 6, p3303 

    The higher-order contribution in reductive perturbation theory is studied for small-butfinite-amplitude dust-acoustic solitary waves in warm magnetized three-component dusty plasmas comprised of variational charged dust grains, isothermal ions, and electrons. The basic set of fluid equations is...

  • The electron density distribution and field profile in underdense magnetized plasma. Sadighi-Bonabi, R.; Etehadi-Abari, M. // Physics of Plasmas;Mar2010, Vol. 17 Issue 3, p032101 

    In this work propagation of a high frequency electromagnetic wave in underdense plasma in presence of an external magnetic field is investigated. When a constant magnetic field perpendicular to the motion of electrons is applied, then the electrons rotate around the magnetic field lines and...

  • Resonant detection of microwave radiation in a circular two-dimensional electron system with quantum point contacts. Dorozhkin, P. S.; Tovstonog, S. V.; Mikhailov, S. A.; Kukushkin, I. V.; Smet, J. H.; von Klitzing, K. // Applied Physics Letters;8/29/2005, Vol. 87 Issue 9, p092107 

    We demonstrate that a two-dimensional electron system with a circular mesa and with quantum point contacts along its periphery is an attractive device geometry for the resonant detection of electromagnetic radiation in the millimeter and microwave region. Its operation relies on the resonant...

  • Transition from reactive to kinetic electromagnetic instabilities generated by ring-beam ions. Ziebell, L. F.; Yoon, Peter H.; Wu, C. S. // Physics of Fluids B: Plasma Physics;Sep91, Vol. 3 Issue 9, p2455 

    The dispersion relation for the low-frequency electromagnetic waves propagating parallel to the ambient magnetic field is studied for a plasma comprised of energetic ring-beam distribution of ions and a background population. Detailed properties of the dispersion relation are studied for various...

  • Wave dispersion theory in a plasma column bounded by a cylindrical waveguide. Uhm, H. S.; Nguyen, K. T.; Schneider, R. F.; Smith, J. R. // Journal of Applied Physics;8/1/1988, Vol. 64 Issue 3, p1108 

    Presents a study that developed a unified theory of the electromagnetic wave propagation in a plasma column immersed in an axial magnetic field including the influence of finite geometrical effects on wave dispersion properties. Details of the theoretical model and equilibrium properties;...

  • Weibel instability associated with inverse bremsstrahlung absorption of intense electromagnetic radiation. Romanov, A. Yu.; Silin, V. P.; Uryupin, S. A. // Journal of Experimental & Theoretical Physics; 

    We investigate the Weibel instability in a plasma with a nonstationary three-temperature electron distribution generated by inverse bremsstrahlung of an intense elliptically polarized electromagnetic wave. We show that electron-ion collisions in this strong high frequency field are...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics