翻訳と辞書 Words near each other ・ Brilliantine ・ Brilliantine (fabric) ・ Brillianty ・ Brillion ・ Brillion (town), Wisconsin ・ Brillion High School ・ Brillion Iron Works ・ Brillion, Wisconsin ・ Brillo Pad ・ Brillon ・ Brillon-en-Barrois ・ Brillosa ・ Brillouin ・ Brillouin and Langevin functions ・ Brillouin scattering ・ Brillouin Spectroscopy ・ Brillouin zone ・ Brillouin's theorem ・ Brillstein Entertainment Partners ・ Brill–Noether theory ・ Brill–Zinsser disease ・ Brilon ・ Brilon Massenkalk Formation ・ Brilon Shale ・ Brilon Stadt station ・ Brilon-Wald station ・ Brilyov Sergey Vladimirovich ・ Brim ・ Brim Fell ・ Brim Fuentes Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Brillouin Spectroscopy ： ウィキペディア英語版 Brillouin Spectroscopy Brillouin spectroscopy is an empirical technique which allows for the determination of elastic moduli for a given material. The technique uses inelastic scattering of light when it encounters acoustic phonons in a crystal, a process known as Brillouin scattering, to determine phonon energies and therefore interatomic potentials of a material (Polian, 2003). The scattering occurs when an electromagnetic wave interacts with a density wave, photon-phonon scattering. This technique is commonly used in fields interested in the elastic properties of materials such as mineral physics and material science. Brillouin spectroscopy can be used to determine the complete elastic tensor of a given material which is required in order to understand the bulk elastic properties. ==Brillouin spectroscopy vs. Raman spectroscopy== Brillouin spectroscopy is similar to Raman spectroscopy in many ways; in fact the physical scattering processes involved are identical. However, the type of information gained is significantly different. The process observed in Raman spectroscopy, Raman scattering, involves high frequency molecular rotational and vibrational modes. Information relating to modes of vibration, such as the six normal modes of vibration of the carbonate ion, (CO¬3)2-, can be obtained through a Raman spectroscopy study shedding light on structure and chemical composition (Buzgar, 2009), whereas Brillouin scattering involves the scattering of photons by low frequency phonons providing information regarding elastic properties (Bass, 1995). Optical phonons measured in Raman spectroscopy have wavenumbers on the order of 10–10000 cm¬-1, while phonons involved in Brillouin scattering are on the order of 0.1–6 cm-1. This order of magnitude difference becomes obvious when attempting to run Raman spectroscopy vs. Brillouin spectroscopy experiments. In Brillouin scattering, and similarly Raman scattering, both energy and momentum are conserved in the relations (Polian, 2003): 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「Brillouin Spectroscopy」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.