  Charged dust particles form structures which are extended in the vertical
direction in the electrode sheath of a rf discharge when confined within a
glass box. The charge on each particle as a function of height varies due to
the changing plasma conditions and the wakefield of upstream particles. Here an
analysis of the equilibrium state of chains of varying number of particles is
analyzed to determine the charge on each particle within a vertically extended
chain as well as the magnitude of the positive wakefield charge.
