کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9818273 | 1518778 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Theoretical study of swift molecular ions specularly reflected from solid surfaces under glancing angle of incidence
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
We develop a theoretical model to study grazing scattering of fast diatomic molecular ions from a solid surface, based on the dielectric response formalism within the specular reflection model, where the plasmon pole approximation for dielectric function is employed to describe the single-particle and the collective excitations of the electron gas at the surface. Evolution of the bound-electron densities at the constituent ions of a molecule in the course of scattering is described by an approach similar to recent implementation of the Brandt-Kitagawa model for single-ion surface grazing scattering. We solve numerically the equations of motion for the constituent ions and obtain the ion scattering trajectories in the presence of Coulomb explosion modified by the surface wake potential, for the initial molecular-axis orientations in either random directions or along the beam. Vicinage effect on the total energy loss is discussed on the basis of analyzing the position-dependent stopping powers of individual ions and the interferences in the electron excitations of the substrate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 230, Issues 1â4, April 2005, Pages 158-164
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 230, Issues 1â4, April 2005, Pages 158-164
نویسندگان
Yuan-Hong Song, You-Nian Wang, Z.L. MiÅ¡koviÄ,