Dust ion-acoustic surface waves and Landau damping in a semi-bounded Lorentzian plasma

Journal Article · Mon Dec 15 04:00:00 EST 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3039912· OSTI ID:21259752

Kim, Taejoon; Lee, Myoung-Jae ^[1]

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1. Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of)

Dust ion-acoustic surface waves propagating on the interface between a vacuum and a semi-bounded Lorentzian (kappa) plasma are kinetically investigated. For a collisionless and unmagnetized Lorentzian plasma, the dispersion relation shows that dust ion-acoustic surface modes are stable against small linear perturbation. The damping rates of the Lorentzian waves are generally increased as the superthermal particles are increased. The ion-to-electron density ratio also greatly enhances the damping rate. As the wave number becomes large, the damping of the wave is quickly decreased. The effects of superthermal particles and dust particles on the phase and the group velocities are discussed in this work as well.

• OSTI ID: 21259752
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONLESS PLASMA
DISPERSION RELATIONS
DISTURBANCES
DUSTS
ELECTRON DENSITY
ION ACOUSTIC WAVES
LANDAU DAMPING
PLASMA DENSITY
WAVE PROPAGATION