TITLE

Kinetic theory on the current-filamentation instability in collisional plasmas

AUTHOR(S)
Biao Hao; Sheng, Z.-M.; Zhang, J.
PUB. DATE
August 2008
SOURCE
Physics of Plasmas;Aug2008, Vol. 15 Issue 8, p082112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The current filamentation instability (CFI) or Weibel-type instability is studied for a nonrelativistic electron beam penetrating an infinite uniform plasma, taking into account both the collisional effects and the space-charge effect (SCE). We consider three configurations for the beam and plasma: the kinetic domain, the hydrodynamic domain, and the hybrid domain with one in kinetic and the other in hydrodynamic domain. It is shown that the CFI is determined by the current-driven drift-anisotropy rather than the classical anisotropy of the beam and the background plasma. Therefore, collisional effects can either attenuate or enhance the CFI depending on the drift-anisotropy of the beam and the background plasma. It is found that the collisional effects usually attenuate the CFI for nearly symmetric counterstreaming in the whole unstable range but enhance it for asymmetric counterstreaming in the long wavelength region both in the kinetic and the hydrodynamic domains, although the mechanisms are different. As for the case of the hybrid domain the collisional effects enhance the CFI growth rate in the long wavelength region but reduce it in the short wavelength region. The SCE can be ignored for the hydrodynamic domain while for the kinetic and the hybrid domains it is still significant though damped by the collisional effects. The combination of the SCE and the collisional effects usually reduce the CFI growth rate and suppress the unstable range further, especially in the short wavelength region.
ACCESSION #
34169239

 

Related Articles

  • A Planar Relativistic Electron Beam in a Plasma Channel Bounded by Conducting Walls. Kuryshev, A. P.; Andreev, V. D. // Technical Physics;Sep2001, Vol. 46 Issue 9, p1151 

    The force interaction of a relativistic electron beam with a plasma in a channel bounded by planegeometry highly conducting walls is studied. The steady-state interaction regime, ω = ku, is analyzed using the model of a cold collisional electron plasma. The formulas for the transverse...

  • Charging properties of a dust grain in collisional plasmas. Khrapak, S. A.; Morfill, G. E.; Khrapak, A. G.; D'yachkov, L. G. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p052512 

    Charging related properties of a small spherical grain immersed in a collisional plasma are investigated. Asymptotic expressions for charging fluxes, grain surface potential, long range electrostatic potential, and the properties of grain charge fluctuations due to the discrete nature of the...

  • Spin interference and nonideal effects on electron-electron collisions in nonideal plasmas. Jung, Young-Dae // Physics of Plasmas;Aug2004, Vol. 11 Issue 8, p4134 

    The spin interference and nonideal effects on electron-electron collisions are investigated in nonideal plasmas. An effective pseudopotential model taking into account the screening and nonideal effects is applied to describe the electron-electron interaction potential in nonideal plasmas. The...

  • Nanoparticle coagulation in fractionally charged and charge fluctuating dusty plasmas. Nunomura, Shota; Shiratani, Masaharu; Koga, Kazunori; Kondo, Michio; Watanabe, Yukio // Physics of Plasmas;Aug2008, Vol. 15 Issue 8, p080703 

    The kinetics of nanoparticle coagulation has been studied in fractionally charged and charge fluctuating dusty plasmas. The coagulation occurs when the mutual collision frequency among nanoparticles exceeds their charging and decharging/neutralization frequency. Interestingly, the coagulation is...

  • Permittivity of Plasma and Nonstationary Theory of Nonlocal Transport. Brantov, A. V.; Bychenkov, V. Yu.; Rozmus, W.; Capjack, C. E. // Journal of Experimental & Theoretical Physics;Jun2005, Vol. 100 Issue 6, p1159 

    A regular procedure is proposed for finding the solution to a linearized kinetic equation for charged particles with the Landau collision integral in a plasma with large Z. The expression for longitudinal permittivity of a collisional plasma, which is obtained using this procedure for the entire...

  • Kinetic theory of a nonequilibrium plasma: Evaluation of the vectorized collisional Boltzmann equation. Morgenthaler, Ann W.; Hagelstein, Peter L. // Physics of Fluids B: Plasma Physics;May93, Vol. 5 Issue 5, p1453 

    Cartesian velocity moments of the Boltzmann equation are evaluated using modal solutions to the spherical harmonic oscillator as a basis set. The nonlinear collision matrix describing the interaction between any two modes is evaluated analytically for the Landau collision operator, and matrix...

  • Three-dimensional reduced drift kinetic equation for neoclassical transport of helical plasmas in the ultralow collisionality regime. Wang, Shaojie; Sanuki, Heiji; Sugama, Hideo // Physics of Plasmas;Mar2000, Vol. 7 Issue 3 

    Based on the original five-dimensional drift kinetic equation, a three-dimensional reduced drift kinetic equation has been obtained to describe the neoclassical transport of helical plasmas in the ultralow collisionality regime, where the collision frequency is much lower than the poloidal...

  • The mechanism of striation formation in plasma display panels. Iza, F.; Yang, S. S.; Kim, H. C.; Lee, J. K. // Journal of Applied Physics;8/15/2005, Vol. 98 Issue 4, p043302 

    Despite the high pressure employed in plasma display panels, the energy balance of low-energy electrons is found to be dominated by inelastic collisions, and the resulting nonlocal electron kinetics plays a key role in the striation formation. Surface charge accumulation on the anode dielectric,...

  • Depth-averaged relations for granular-liquid uniform flows over mobile bed in a wide range of slope values. Fraccarollo, Luigi; Larcher, Michele; Armanini, Aronne // Granular Matter;Jun2007, Vol. 9 Issue 3/4, p145 

    The behavior of liquid-granular flows, driven by gravity, is experimentally analyzed. Two types of free-surface uniform flow can take place, having different boundary conditions at the bottom. The first one runs over a fixed surface behaving as a solid (non-deformable) impermeable wall; the...

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