Melting of strongly coupled, negatively charged, two‐dimensional dust cluster: The role of charge fluctuation amplitude

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 simulati...

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Bibliographic Details
Published in:Contributions to plasma physics (1988) 2020-01, Vol.60 (1), p.n/a
Main Authors: Issaad, M., Djebli, M., Derouiche, Y., Helifa, B.
Format: Article
Language:English
Subjects:
2D clusters
Amplitudes
Charged particles
Computer simulation
Coulomb potential
Dust
dust particles
Electrostatic properties
Mathematical models
Melt temperature
Melting
phase transitions
random charge fluctuation
Variation
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Summary: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.
ISSN:0863-1042
1521-3986
DOI:10.1002/ctpp.201900064