标题： 石墨烯层中的等离子体激发 显示英文标题

标题： Plasmonic excitations in graphene layers

摘要： 快速带电粒子与石墨烯层的相互作用可以产生电磁模式。 这种尾迹效应最近被提出用于短波长、高梯度的粒子加速以及获得明亮的辐射源。 在本研究中，使用线性化水动力理论研究了一个点状带电粒子平行于多层石墨烯阵列（可能由绝缘衬底支撑）运动时产生的尾迹场的激发。 已经推导出激发的纵向和横向尾迹场的一般表达式。 对尾迹场随层的位置和衬底、速度和表面密度的变化关系进行了广泛分析。 本研究为深入理解石墨烯层中等离子体激元激发的物理现象提供了基础，为这些结构在粒子加速、纳米技术和材料科学中的潜在应用铺平了道路。 显示英文摘要

摘要： The interaction of fast charged particles with graphene layers can generate electromagnetic modes. This wake effect has been recently proposed for short-wavelength, high-gradient particle acceleration and for obtaining brilliant radiation sources. In this study, the excitation of wakefields produced by a point-like charged particle moving parallel to a multilayer graphene array (which may be supported by an insulated substrate) is studied using the linearized hydrodynamic theory. General expressions for the excited longitudinal and transverse wakefields have been derived. The dependencies of the wakefields on the positions of the layers and the substrate, the velocity and the surface density have been extensively analyzed. This study provides a deeper understanding of the physical phenomena underlying plasmonic excitations in graphene layers, paving the way for potential applications of these structures in particle acceleration, nanotechnology and materials science.