Microscopic structure of the plasma resonance in charged potassium microclusters.
Microscopic structure of the plasma resonance in charged potassium microclusters.
复制标题
带电钾微团簇中等离子体共振的微观结构。
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
Broglia
中科院分区：
文献类型：
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作者：
Yannouleas;Pacheco;Broglia
在无规相位近似下计算了K{sub 9}{sup +}、K{sub 21}{sup +}和K{sub 22}{sup 2+}带电微团簇的偶极强度函数。相反的中性集群的情况下，基本上没有朗道阻尼被发现在这里研究的系统中，由一个单一的峰值进行大部分的振子强度的频谱占主导地位。等离子体激元与表面热涨落的耦合可以占所观察到的扩展宽度的约60%。
The dipole strength function of K{sub 9}{sup +}, K{sub 21}{sup +}, and K{sub 22}{sup 2+} charged microclusters is calculated within the framework of the random-phase approximation. Contrary to the case of neutral clusters, essentially no Landau damping is found in the systems under study here, the spectrum being dominated by a single peak carrying most of the oscillator strength. The coupling of the plasmon to thermal fluctuations of the surface can account for about 60% of the observed spreading width.