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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39094


    Title: Observation of dust Coulomb clusters in a plasma trap
    Authors: Juan,WT;Huang,ZH;Hsu,JW;Lai,YJ;I,L
    Contributors: 物理研究所
    Keywords: PARTICLES;VORTEX
    Date: 1998
    Issue Date: 2010-07-08 14:04:42 (UTC+8)
    Publisher: 中央大學
    Abstract: The formation of ordered quasi-two-dimensional Coulomb clusters of negatively charged dust particles with particle number N, from a few to 791 in a cylindrical plasma trap, are demonstrated. For small N, particles are alternately packed in concentric shells with periodically oscillating occupation numbers as N increases. The thermal induced collective excitations are dominated by the intershell angular motions. For large N, the large triangular core surrounded by a few outer circular shells appears and supports vortexlike excitations, which induce uniform and isotropic motions. The observed behaviors are generic and similar to the predictions by other more ideal models with the same symmetry. [S1063-651X(98)51412-2].
    Relation: PHYSICAL REVIEW E
    Appears in Collections:[物理研究所] 期刊論文

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