کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424419 | 1395823 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
About energy balance during ESD processes in the very low range of electron energies: Measurements and discussion on the desorption of Hâ ions from a hydrogenated diamond film
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper deals mainly with a comparison of ESD experimental data recorded on similar samples of hydrogenated microcrystalline diamond substrates exposed to electron beams of energies below 10Â eV and of comparable densities. Two substantially setups provide data showing large variations for the resonant process leading to desorption of Hâ ions. While published data claim that hydrogen ions leave the surface with mean kinetic energies proportional to the incident electron energies, the new experimental results reported here show invariant most probable initial energies for Hâ ions. Other samples involving chemisorbed radicals show very comparable behaviour. Therefore, it is assumed that the influence of the setup configuration influences the desorption characterizations. It is likely that a real quantum mechanic approach may take into account the simultaneous interaction of the electron with several surface atoms including numerous dissipation channels. Besides this, following the bond breaking process, the ion has to overcome the charge image influence which will significantly reduce the ion kinetic energies. The discussion fully justifies our experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 602, Issue 20, 15 October 2008, Pages 3177-3183
Journal: Surface Science - Volume 602, Issue 20, 15 October 2008, Pages 3177-3183
نویسندگان
Marc Bernheim,