Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy

作     者：Vieira, Luis G. 

作者机构：Univ Minho Ctr Fis Univ Minho & Porto CF UM UP Lab Fis Mat & Tecnol Emergentes LaPMET Braga Portugal Univ Minho Dept Fis Campus Gualtar P-4710057 Braga Portugal 

出 版 物：《APPLIED SPECTROSCOPY》 (应用光谱学)

年 卷 期：2023年第77卷第2期

页      面：178-186页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0804[工学-仪器科学与技术] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Portuguese Foundation for Science and Technology (FCT) [UIDB/04650/2020] 

主　　题：Infrared spectroscopy attenuated total reflection ATR spectrum modelling optical functions water 

摘      要：Comprehensive modeling of non-polarized infrared attenuated total reflection spectrum based on Fresnel equations and wavenumber-dependent dielectric function models of isotropic materials is shown to be a suitable and easy methodology to retrieve optical functions. The scheme is completely general and can be used even for strong dispersion and absorption resonances. Attenuated total reflection spectra in liquid water, measured in the spectral region 100-4400 cm(-1) with diamond and germanium as internal reflection elements, were used to illustrate and evaluate the method. The refractive index of water computed from the dispersion analysis is critically compared with literature data.