Rotation effects of elongated dust particles on dust ion-acoustic surface waves in a Lorentzian plasma
- Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of)
The dispersion relation for a dust ion-acoustic surface wave is obtained for the semi-bounded dusty plasma containing elongated and rotating charged dust particles. The equilibrium plasma velocity distribution function is taken to be Lorentzian. Dust particles are assumed to be cold. The result shows that the frequency of the dust ion-acoustic surface wave propagating at the plasma-vacuum interface can be lowered by the increase of the angular rotation frequency of the elongated dust particles in the range that k{sub x}{lambda}{sub e} > or approx. 1, where k{sub x} and {lambda}{sub e} are the wave number and electron Debye length, respectively. In addition, the increase of the spectral index {kappa} in the Lorentzian distribution function is found to increase the phase velocity of the wave, especially in the case that k{sub x}{lambda}{sub e} < or approx. 10. The influence of {kappa} and wave number on the group velocity of the surface wave is also analyzed.
- OSTI ID:
- 21120470
- Journal Information:
- Physics of Plasmas, Vol. 15, Issue 6; Other Information: DOI: 10.1063/1.2936271; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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