带电粒子沿镁表面平行运动的能量损失
Energy loss of charged particles moving parallel to a magnesium surface
摘要：
我们提出了从头计算的电子能量损失的带电粒子移动到镁表面外，从一个现实的描述的单电子能带结构和一个完整的治疗价电子的动态电子响应。我们的研究结果表明，等离子体共振，这主要是由于存在的带结构效应的有限宽度，强烈修改的渐近行为的能量损失在大的距离从表面。这种效应对于理解带电粒子与微毛细管内表面之间的相互作用是相关的。
英文摘要：
We present it ab initio calculations of the electronic energy loss of charged particles moving outside a magnesium surface, from a realistic description of the one-electron band structure and a full treatment of the dynamical electronic response of valence electrons. Our results indicate that the finite width of the plasmon resonance, which is mainly due to the presence of band-structure effects, strongly modifies the asymptotic behaviour of the energy loss at large distances from the surface. This effect is relevant for the understanding of the interaction between charged particles and the internal surface of microcapillaries.
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