Influence of Elongated Dust Particle Rotation on Dust Ion-acoustic Surface Waves in a Maxwellian Complex Plasma

The dispersion relation for a dust ion-acoustic surface wave propagating at the plasma-vacuum interface of semi-bounded Maxwellian complex plasma containing elongated and rotating dust particles is kinetically derived by employing Vlasov-Maxwell equations. The result shows that the frequency of the dust ion-acoustic surface wave is noticeably suppressed by the dust rotation in the range k_xλ_e > 0.5 where kx is the wave number parallel to the interface and e is the electron Debye length. For k_xλ_e < 0.5, the wave frequency is found to be almost linearly proportional to k_xλ_e regardless of the magnitude of the dust angular frequency. The properties of the group velocity of the wave are also investigated. KCI Citation Count: 1