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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Inelastic mean free path ： ウィキペディア英語版 Inelastic mean free path The inelastic mean free path (IMFP) is an index of how far an electron on average travels through a solid before losing energy. If a monochromatic primary beam of electrons is incident on a solid surface, the majority of incident electrons lose their energy because they interact strongly with matter, leading to plasmon excitation, electron-hole pair formation, and vibrational excitation.〔R. F. Egerton (1996) ''Electron energy-loss spectroscopy in the electron microscope'' (Second Edition, Plenum Press, NY) ISBN 0-306-45223-5〕 The intensity of the primary electrons, $\backslash textstyle\; I\_0$, is damped as a function of the distance, $\backslash textstyle\; d$, into the solid. The intensity decay can be expressed as follows: : $I(d)\; =\; I\_0\; \backslash \; e^$ where $\backslash textstyle\; I(d)$ is the intensity after the primary electron beam has traveled through the solid. The parameter $\backslash textstyle\; \backslash lambda(E)$, termed the inelastic mean free path (IMFP), is defined as the distance an electron beam can travel before its intensity decays to $\backslash textstyle\; 1/e$ of its initial value. The inelastic mean free path of electrons can roughly be described by a universal curve, which is the same for all materials. ==See also== * Scattering theory 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Inelastic mean free path」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.