Title 



Structure and correlations in twodimensional classical artificial atoms confined by a Coulomb potential
 
Author 



 
Abstract 



The ordering of N equally charged particles (e) moving in two dimensions and confined by a Coulomb potential, resulting from a displaced positive charge Ze is discussed. This is a classical model system for atoms. We obtain the configurations of charged particles which, depending on the value of N and Z, may result in ring structures, hexagonaltype configurations, and for N/Z approximate to 1 in an inner structure of particles which is separated by an outer ring of particles. For N/Z << 1, the Hamiltonian of the parabolic confinement case is recovered. For N/Z approximate to 1, the configurations are very different from those found in the case of a parabolic confinement potential. A hydrodynamic analysis is presented in order to highlight the correlations effects.   
Language 



English
 
Source (journal) 



Physical review : E : statistical, nonlinear, and soft matter physics / American Physical Society.  Melville, N.Y., 2001  2015  
Publication 



Melville, N.Y. : American Physical Society, 2003
 
ISSN 



15393755 [print]
15502376 [online]
 
Volume/pages 



67:4Part 2(2003), p. 18
 
Article Reference 



046601
 
ISI 



000182825400087
 
Medium 



Eonly publicatie
 
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