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Structure of Multi-Species Charged-Particles with Competing Interactions in a Quadratic Trap |
| LIU Yan-Hong1,2;CHEN Bao-Xin3;WANG Long2 |
| 1Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
2Institute of Physics, Chinese Academy of Sciences, 100080 Beijing
3School of Science, Zhejiang University of Science and Technology, Hangzhou 310023 |
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| Cite this article: |
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LIU Yan-Hong, CHEN Bao-Xin, WANG Long 2006 Chin. Phys. Lett. 23 1540-1543 |
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Abstract Multi-species charged-particles interacting with each other by a competing short-range attraction and long-range repulsion potential confined in a quadratic trap are studied with molecular dynamics simulations. It is found that particles with similar mass-to-charge ratio tend to populate a common shell, whose location depends on the particle mass-to-charge ratio, and that the greater the latter is, the closer the particles to the centre of the trap are. This rule for the ground-state configuration is independent of the total particle and species numbers in the system.
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| Keywords:
61.50.Ah
36.40.Wa
61.43.Bn
52.27.Lw
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Published: 01 June 2006
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| PACS: |
61.50.Ah
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(Theory of crystal structure, crystal symmetry; calculations and modeling)
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36.40.Wa
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(Charged clusters)
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61.43.Bn
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(Structural modeling: serial-addition models, computer simulation)
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52.27.Lw
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(Dusty or complex plasmas; plasma crystals)
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