Energy loss due to plasmon excitation by the impact of charged particles on solid surfaces: Beyond a standard approximation

30th International Conference on Photonic, Electronic, and Atomic Collisions

Gervasoni, J.L.^1,2,3 ; Barrachina, R.O.^1,2,3 ; Segui, S.^1,3 ; Navarrete, F.^1,2,3 ; Arista, N.^1,2

Centro Atómico Bariloche (CNEA), Av. Bustillo 9500, S. C. de Bariloche

8400, Argentina^1

Instituto Balseiro (CNEA - UNCuyo), Av. Bustillo 9500, S. C. de Bariloche

8400, Argentina^2

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina^3

关键词: A-particles;    Bulk plasmons;    Charged projectiles;    Condensed matter;    Infinite material;    Plasmon excitations;    Solid surface;    Transferred momentum;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/12/112003/pdf
DOI  :  10.1088/1742-6596/875/12/112003

来源: IOP

【 摘 要 】

We demonstrate that a standard approximation in the integration conditions of the transferred momentum, which is frequently employed for the study of the interaction of charged projectiles with condensed matter, might lead to inconsistent results. We propose a method for avoiding these shortcomings. Finally we exemplify this issue by studying the excitation of bulk plasmons by a particle penetrating a semi-infinite material at an oblique trajectory.