کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1680116 | 1010374 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Energy and impact angle dependence of sub-threshold external electron emission
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
The kinetic electron emission induced by Ar+ ions impinging onto a polycrystalline Ag surface is studied as a function of the projectile impact angle in the energy range 5-10Â keV well below the classical threshold. The resulting emission yield is compared to published model descriptions of sub-threshold electron emission. We find reasonable agreement with the prediction of the hot spot model proposed by Sroubek, which is shown to become equivalent with a Richardson-Dushman-type description of thermionic emission when converted to three dimensions. The model is further extended to describe the impact angle dependence and shown to fit the corresponding experimental data reasonably well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 317, Part A, 15 December 2013, Pages 37-43
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 317, Part A, 15 December 2013, Pages 37-43
نویسندگان
C. Heuser, A. Wucher,