Download file (1.9MB)
Download as zip (1.8MB)

コレクション

引用

説明:

We have determined electron inelastic mean free paths (IMFPs) in C (graphite), Si, Cr, Fe, Cu, Zn, Ga, Mo, Ag, Ta, W, Pt and Au by elastic-peak electron spectroscopy (EPES) using Ni as a reference material for electron energies between 50 eV and 5000 eV. These IMFPs could be fitted by the simple Bethe equation for inelastic electron scattering in matter for energies from 100 eV to 5000 eV. The average root-mean-square (RMS) deviation in these fits was 9 %. The IMFPs for Si, Cr, Fe, Cu, Ag, Ta, W, Pt and Au were in excellent agreement with the corresponding values calculated from optical data for energies between 100 eV and 5000 eV. While the RMS differences for graphite and Mo in these comparisons were large (27 % and 17 %, respectively), the average RMS difference for the eleven elements was 11 %. Similar comparisons were made between our IMFPs and values obtained from the TPP-2M predictive equation for energies between 100 eV and 5000 eV, and an average RMS difference for the thirteen solids was 10.7 %; in these comparisons, the RMS differences for Ta and W were relatively large (26 % for each). A correction for surface-electronic excitations was calculated from a formula of Werner et al.; except for Si and Ga, the average correction was 5 % for energies between 150 eV and 5000 eV. The satisfactory consistency between the IMFPs from our EPES experiments and the corresponding IMFPs computed from optical data indicates that the uncertainty of these IMFPs is about 11 % for electron energies between 100 eV and 5000 eV. Similar comparisons with IMFPs from the EPES experiments of Werner et al. showed a consistency of 8 % for energies between 200 eV and 5000 eV.

権利情報:

キーワード: Monte Carlo simulation, electron inelastic mean free paths, experimental determination, elastic- peak electron spectroscopy

刊行年月日: 2005-10-31

出版者: Wiley

掲載誌:

研究助成金:

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.3058

公開URL: https://doi.org/10.1002/sia.2102

関連資料:

その他の識別子:

連絡先:

更新時刻: 2024-01-05 22:13:04 +0900

MDRでの公開時刻: 2021-11-16 19:26:09 +0900