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Dielectric Characteristics of the Water Solutions of Ethanol in the Terahertz Region
Hideaki Kitahara,Keisuke Mano,Mitsuo Wada Takeda,Seiji Kojima,Seizi Nishizawa,Takuma Yagi 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
To investigate the dielectric properties of water solutions, we fabricated a liquid-sample holder for THz-TDS and developed a software program to analyze the complex dielectric constant of a liquid. Transmission spectra were measured for a water solution of ethanol, and the complex dielectric constant was analyzed by using a Debye model of three terms. Turning points in the relaxation times at concentrations of 8, 20, and 40 mol% were observed.