Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Avenida Bustillo 9500, 8400 San Carlos de Bariloche, Argentina.
J Phys Condens Matter. 2013 May 1;25(17):175001. doi: 10.1088/0953-8984/25/17/175001. Epub 2013 Mar 18.
We study ' the excitation of plasmons due to the incidence of a fast charged particle that passes through a single-wall carbon nanotube. We use a quantized hydrodynamic model, in which the σ and π electron systems are depicted as two interacting fluids moving on a cylindrical surface. Calculations of the average number of the excited plasmons and the corresponding energy loss probability for the swift electrons are compared with several experimental results for electron energy loss spectra recorded using transmission electron microscopes. We are able to identify the π and σ + π plasmon peaks and elucidate the origin of various spectral features observed in different experiments.
我们研究了“由于快速带电粒子穿过单壁碳纳米管而引起的等离子体激发。我们使用了一种量子化的流体动力学模型，其中σ和π电子系统被描绘为在圆柱面上移动的两个相互作用的流体。我们计算了激发等离子体的平均数量和快速电子对应的能量损失概率，并将其与使用透射电子显微镜记录的电子能量损失谱的几个实验结果进行了比较。我们能够识别出π和σ+π等离子体峰，并阐明了在不同实验中观察到的各种光谱特征的起源。”
