Attractive wake field formation due to an array of dipolar projectiles in a multi-component dusty plasma

摘要

The dielectric response function for modified dust acoustic waves is studied, incorporating the dipole moment and moment of inertia of finite sized elongated dust grains. Using this dielectric constant, generalized expressions for the Debye potential and for the wake potential are obtained due to a cluster of N-2 dust grain projectiles moving with a constant velocity along the z-axis through a multi-component dusty plasma. For illustration, numerical results due to single, three, and six projectiles are presented with and without a dipole effect. A negative wake potential is observed behind each projectile in different geometeries. (C) 2003 American Institute of Physics. [References: 28]