Self-consistent electric field inside ordered dust structures.
We report finding a self-consistent electric field of electrons, ions, and dust grains inside an ordered dust cloud in glow discharge, and show that this field differs radically from that of an isolated grain. Besides, the screening radius coincides with the size of Wigner-Seitz cell. The value of potential necessary for containing dust particles in the direction perpendicular to the discharge axis is estimated. We show that the interaction potential energy of a system of ordered dust grains has a form characteristic of ionic crystals. Critical parameters for a liquidlike dust structure are estimated. The correlation function of dust grains obtained via this approach is compared with the measured function.
Vorob'ev
V S
VS
Institute of High Energy Densities, Joint Institute of High Temperatures, Russian Academy of Sciences (IVTAN), Moscow, Russia.
Petrov
O F
OF
Fortov
V E
VE