A resistive instability of lower hybrid-like waves in regions with parallel currents

Verdon, A. L.; Cairns, Iver H.; Melrose, D. B.; Robinson, P. A.
August 2011
Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p082103
Academic Journal
The resistive instabilities and dispersion of obliquely propagating waves near the lower hybrid (LH) frequency are studied in plasma carrying a current parallel to the magnetic field. Possible applications of these instabilities include magnetic reconnection regions where LH-like waves may accelerate and heat both ions and electrons. A resistive instability is found in one of the four LH-like wave modes for electron drift speeds several times greater than the electron thermal speed for representative parameters. Numerical fully electromagnetic kinetic calculations of the solutions to the linear dispersion equation are compared with more approximate analytic calculations and show good agreement. The analytic results indicate that ion magnetization effects play a critical role in the resistive instability.


Related Articles

  • Lower-hybrid drift and Buneman instabilities in current sheets with guide field. Yoon, P. H.; Lui, A. T. Y. // Physics of Plasmas;11/1/2008, Vol. 15 Issue 11, p112105 

    Lower-hybrid drift and Buneman instabilities operate in current sheets with or without the guide field. The lower-hybrid drift instability is a universal instability in that it operates for all parameters. In contrast, the excitation of Buneman instability requires sufficiently thin current...

  • Instabilities of collisionless current sheets: Theory and simulations. Silin, I.; Bu¨chner, J.; Zelenyi, L. // Physics of Plasmas;Apr2002, Vol. 9 Issue 4, p1104 

    The problem of Harris current sheet stability is investigated. A linear dispersion relation in the long-wavelength limit is derived for instabilities, propagating in the neutral plane at an arbitrary angle to the magnetic field but symmetric across the sheet. The role of electrostatic...

  • Unstable longitudinal plasma oscillations in a magnetic field: Nonrelativistic and relativistic considerations. Tautz, R. C.; Lerche, I.; Schlickeiser, R. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p053109 

    The nonrelativistic and relativistic stability properties are investigated of longitudinal waves propagating in a plasma embedded in an ambient magnetic field, when the wave propagation direction is not necessarily either parallel or perpendicular to the ambient magnetic field. The analysis is...

  • Behavior of evanescent fields in the periodic scattering system. Okita, T.; Tanaka, H. // European Physical Journal - Applied Physics;Mar2012, Vol. 57 Issue 3, pN.PAG 

    We study the problem of scattering by a thin and conducting screen perforated periodically with square apertures, when the screen is illuminated by an electromagnetic wave in subwavelength regime. Our formulation extends the monomodal approximation technique up to the second-order Floquet modes,...

  • Bump-on-tail instability in space plasmas. Sarkar, Susmita; Paul, Samit; Denra, Raicharan // Physics of Plasmas;2015, Vol. 22 Issue 10, p1 

    Bump-on-tail instability of Langmuir waves propagating in unmagnetized Lorentzian plasma modeled by a Kappa velocity distribution with spectral index κ has been investigated in this paper. Growth rate of this microinstability has been determined analytically from the Langmuir wave dispersion...

  • Instabilities and generation of a quasistationary magnetic field by the interaction of relativistically intense electromagnetic wave with a plasma. Gillani, S. S. A.; Tsintsadze, N. L.; Shah, H. A.; Razzaq, M. // Physics of Plasmas;Aug2010, Vol. 17 Issue 8, p082104 

    It is shown that the interaction of the superstrong laser radiation with an isotropic plasma leads to the generation of low frequency electromagnetic (EM) waves and in particular a quasistationary magnetic field. When the relativistic circularly polarized transverse EM wave propagates along...

  • Mitigation of the Rayleigh-Taylor instability by sheared axial flows. Shumlak, U.; Roderick, N.F. // Physics of Plasmas;Jun98, Vol. 5 Issue 6, p2384 

    Examines the effect of sheared axial flows on the Rayleigh-Taylor instability in Z pinch implosions. Factors stabilizing the Rayleigh-Taylor instability; Analysis of the dispersion relations in uniform and annular plasma implosions; Possibility of the mitigation of the Rayleigh-Taylor...

  • The cusp map in the complex-frequency plane for absolute instabilities. Kupfer, K.; Bers, A.; Ram, A. K. // Physics of Fluids (00319171);Oct87, Vol. 30 Issue 10, p3075 

    It is well known that absolute instabilities can be located by prescribed mappings from the complex-frequency plane to the wavenumber plane through the dispersion relation D (ω,k) = 0. However, in many systems of physical interest the dispersion relation is polynomial in co while...

  • Two-fluid simulations of shock wave propagation and shock-bubble interaction in collisionless plasma. Mori, Koichi // Physics of Plasmas;Mar2012, Vol. 19 Issue 3, p032311 

    The propagation of collisionless shock waves and the influence of the space-charge field on the development of fluid instabilities induced by a collisionless shock wave are investigated by solving the two-fluid plasma equations numerically in two space-dimensions. A second-order accurate Riemann...


Read the Article


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

Try another library?
Sign out of this library

Other Topics