کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11029576 | 1646486 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of shallow core levels on the shape of REELS spectra
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
It is well established that the shape of spectra acquired using reflection electron energy loss spectroscopy (REELS) is determined by the dielectric function. Extracting the dielectric function from REELS spectra is a real challenge as it is governed by strong multiple scattering. It is generally assumed that the contribution of shallow core levels (with binding energies over 100â¯eV) to the REELS data can be neglected when one interprets valence band REELS data that usually extends to, at most, 100â¯eV energy loss. Here we show that, especially when incoming energies over 1â¯keV are used, this is not the case and that the intensity of the REELS spectrum can only be calculated correctly if the shallow core levels are taken into account. The implications for this for the extraction of the dielectric function from REELS data is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 229, December 2018, Pages 42-46
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 229, December 2018, Pages 42-46
نویسندگان
M. Vos, P.L. Grande, G. Marmitt,