Wake potentials in plasmas containing elongated dust rods

We study interaction potentials in unmagnetized as well as magnetized dusty plasmas composed of electrons, ions, and elongated charged dust rods. By using appropriate dielectric constants for coupled dipole oscillons and dust acoustic waves and the test particle approach, we determine the Debye Hückel and dynamical oscillatory wake potentials. The relevance of our investigation to the alignment of dust rods in laboratory dusty plasmas is pointed out.