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首页> 外文期刊>Physical review letters >Multiscale Coherent Excitations in Microscopic Acoustic Wave Turbulence of Cold Dusty Plasma Liquids
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Multiscale Coherent Excitations in Microscopic Acoustic Wave Turbulence of Cold Dusty Plasma Liquids

机译：冷尘尘等离子体液体的微观声波湍流中的多尺度相干激发

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摘要

We experimentally demonstrate the observation of thermally excited microscopic acoustic wave turbulence at the discrete level in quasi-two-dimensional cold dusty plasma liquids. Through multidimensional empirical mode decomposition of individual dust particle motions over a large area, the turbulence is decomposed into multiscale traveling wave modes, sharing self-similar dynamics. All modes exhibit intermittent excitation, propagation, scattering, and annihilation of coherent waves, in the form of clusters in the xyt space, with cluster sizes exhibiting self-similar power law distribution. The poor particle interlocking in the region with poor structural order is the key origin of the easier excitations of the large amplitude slow modes. The sudden phase synchronization of slow wave modes switches particle motion from cage rattling to cooperative hopping.
机译：我们通过实验证明了准二维冷尘尘等离子体液体中离散水平的热激发微观声波湍流的观察。通过大面积上单个尘埃粒子运动的多维经验模式分解，湍流被分解为多尺度行波模式，共享自相似的动力学。所有模式都以xyt空间中的簇的形式表现出相干波的间歇激发，传播，散射和an灭，簇的大小表现出自相似的幂律分布。在具有较差的结构顺序的区域中，较差的粒子互锁是大振幅慢模的较容易激发的关键根源。慢波模式的突然相位同步将粒子运动从笼式嘎嘎声切换为协同跳跃。

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  • 来源
    《Physical review letters》 |2019年第6期|065002.1-065002.6|共6页
  • 作者

    Hu Hao-Wei; Wang Wen; I Lin;

  • 作者单位

    Natl Cent Univ, Dept Phys, Jhongli 32001, Taiwan|Natl Cent Univ, Ctr Complex Syst, Jhongli 32001, Taiwan;

    Natl Cent Univ, Dept Phys, Jhongli 32001, Taiwan|Natl Cent Univ, Ctr Complex Syst, Jhongli 32001, Taiwan|Acad Sinica, Taiwan Int Grad Program, Mol Sci & Technol, Taipei 10617, Taiwan|Natl Cent Univ, Taipei 10617, Taiwan;

    Natl Cent Univ, Dept Phys, Jhongli 32001, Taiwan|Natl Cent Univ, Ctr Complex Syst, Jhongli 32001, Taiwan;

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