Wave spectra in solid and liquid complex (dusty) plasmas.
Wave spectra in solid and liquid complex (dusty) plasmas.
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DOI：
10.1103/physrevlett.94.045001
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发表时间：
2005-02
影响因子：
8.6
通讯作者：
S. Nunomura;S. Zhdanov;D. Samsonov;G. Morfill
中科院分区：
文献类型：
--
作者：
S. Nunomura;S. Zhdanov;D. Samsonov;G. Morfill
实验获得了不同动力学温度下液体和固体二维复杂（尘埃）等离子体中的纵波和横波谱。随着温度的升高和等离子体的相态从固态变为液态，纵模和横模的声子谱都变宽（特别是在高波数时），表明阻尼增加。横向模式消失，出现热（压缩）模式。
Spectra of longitudinal and transverse waves were obtained experimentally in liquid and solid two-dimensional complex (dusty) plasmas at different kinetic temperatures. As the temperature increased and the phase state of the plasma changed from solid to liquid, the phonon spectra of both longitudinal and transverse modes broadened (especially at high wave numbers), indicating increased damping. The transverse mode disappeared and a thermal (compressional) mode appeared.