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Melting of strongly coupled, negatively charged, two‐dimensional dust cluster: The role of charge fluctuation amplitude
Author(s) -
Issaad M.,
Djebli M.,
Derouiche Y.,
Helifa B.
Publication year - 2020
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201900064
Subject(s) - coulomb , amplitude , charge (physics) , physics , ion , cluster (spacecraft) , electron , ground state , condensed matter physics , atomic physics , electric charge , materials science , quantum mechanics , computer science , programming language
Structural and melting characteristics are investigated for negatively charged dust particles in the presence of a two‐dimensional electrostatic parabolic confinement potential. For a restricted number of dust particles that are subject to the permanent flow of electrons and ions, numerical simulation is conducted taking into account the random charge fluctuation. The amplitude of the charge fluctuation affects the ground‐state configuration and melting characteristics of a finite number of particles interacting through Coulomb potential. The melting temperature decreases when the amplitude of the charge fluctuation increases as a result of particles' strong repulsive interaction.