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Paper Information

Journal:   JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)   SPRING 2006 , Volume 16 , Number 59 (PHYSICS ISSUE); Page(s) 41 To 47.
 
Paper: 

POTENTIAL OF GRAINS IN TWO DIMENSIONAL HEXAGONAL DUSTY PLASMA CRYSTALS

 
 
Author(s):  SHAHMANSOURI M.*, FAROKHI B.
 
* PHYSICS DEPARTMENT, ISLAMIC AZAD UNIVERSITY, ARAK BRANCH, ARAK, IRAN
 
Abstract: 

The massive, negatively charged dust grains are considered as discrete particles, while the electrons and ions assume to be distributed by Boltzmannean with the same temperatures. Assuming the grains to be conductors and charge of grain depend on the surface potential of the grain. The Poisson equation for small potentials takes then the form of the Helmholtz equation. The spatial distribution of the potential in the lattice includes the effect of whole system of dust particles. Such a self consistent description gives the dispersion relation for the dust lattice waves. It is shown that for the existence of ideal lattice the dusty plasma parameters must satisfy the definite relation. The calculations are carried out for two dimensional hexagonal lattice putting the cyclic boundary condition on dust grains. New relation for potential is found and there is a comparison with Yukawa system.

 
Keyword(s): DUSTY PLASMA, HEXAGONAL LATTICE, YUKAWA POTENTIAL
 
References: 
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