کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1686445 1518763 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic stopping of hydrogen ions deduced from TOF-LEIS spectra
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Electronic stopping of hydrogen ions deduced from TOF-LEIS spectra
چکیده انگلیسی
Protons and deuterons with energies 0.33-10 keV were used to obtain time-of-flight low energy ion scattering (TOF-LEIS) spectra for thin layers of Au evaporated onto a B/Si substrate. The thickness (2.4 nm) and the root-mean-square roughness (0.5 nm) of the Au layer were determined by Rutherford Backscattering Spectrometry (RBS) and Atomic Force Microscopy (AFM), respectively. To deduce the electronic stopping power, TRBS simulations were performed with dE/dx as an input parameter that was optimized to fit the experimental spectra. At energies above 3 keV, the low energy edge in the experimental spectra was widened due to the film roughness. Therefore, the simulations were carried out for the Au layer composed by two different thicknesses in order to yield optimum agreement. The resulting stopping values compare favourably to literature data. No proton/deuteron isotope effect in stopping of hydrogen ions was observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 249, Issues 1–2, August 2006, Pages 58-61
نویسندگان
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