Experimental Study of Coulomb crystal formation in Hollow Cathode discharge

Agarwal, A. K.; Prasad, G.
December 2002
AIP Conference Proceedings;2002, Vol. 649 Issue 1, p261
Academic Journal
The formation of macroscopic ordered structures in hollow cathode discharge in Ar plasma has been observed. A Coulomb quasicrystal is formed by alumina grains with diameter of 70 to 140 µm. A simple phenomenological model where in the intergrain spacing results from an attractive electric-field-induced dipole-dipole force balanced by a repulsive monopole Coulomb force is used to explain the observed features of the Coulomb crystal.


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