کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1691692 | 1011328 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Energy transfer phenomena of keV fullerenes during grazing scattering from an Al(0Â 0Â 1) surface
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کلمات کلیدی
C6079.20.Rf79.60.Bm78.30.Na61.85.+p - + 61.85. + p79.20.Ap - 79.20.apAluminum - آلومینیوم Angular distributions - توزیع زاویه ایMolecular dynamics - دینامیک ملکولی یا پویایی مولکولیMetal surface - سطح فلزSimulation - شبیه سازیFullerene - فولرنExcitation - هیجانIon-surface scattering - پراکندگی سطح یونChanneling - کانال کردن
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
Angular distributions for grazing scattering of C60+ fullerenes with energies of up to some 10Â keV from an atomically clean and flat Al(0Â 0Â 1) surface are studied. Scattering proceeds in the regime of surface channeling where the motions of projectiles parallel and normal to the surface are widely decoupled. At low energies for the motion with respect to the surface normal, the clusters are scattered nearly elastically, whereas for larger energies a substantial amount of normal energy is lost. The results are compared to trajectory simulations using the Tersoff potential for the cluster and 3D- as well as 1D-rigid-wall representations for the surface. We find that, despite the large mass of C60, the surface can be considered as a 1D- rigid wall and that the exact form of the interaction potential with the surface does not influence the normal energy loss. Therefore, properties of the fullerene and its interaction with the surface can be studied under well-defined conditions. The energy loss is transferred to internal excitations of the fullerenes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 82, Issue 9, 2 May 2008, Pages 895-899
Journal: Vacuum - Volume 82, Issue 9, 2 May 2008, Pages 895-899
نویسندگان
S. Wethekam, H. Winter,