Title :
Measurement of water absorption coefficient using terahertz time-domain spectroscopy
Author :
Suzuki, Takehito ; Takayama, Koyuru ; Yamauchi, Satoshi ; Imai, Yoh ; Tonouchi, Masayoshi
Author_Institution :
Ibaraki Univ., Hitachi, Japan
Abstract :
Terahertz time-domain spectroscopy (TDS) is advantageous to analyze the absorption spectrum of water since the terahertz electromagnetic waves are absorbed very well. The measurement confirms the absorption coefficient of the pure water increases with the frequency from 0.04 THz to 0.8 THz. Moreover, the absorption increases with an increment of the concentration of Na+ ion in the pure water especially in the low frequency region.
Keywords :
absorption coefficients; positive ions; sodium; terahertz spectroscopy; terahertz wave spectra; water; H2O; Na+; frequency 0.04 THz to 0.8 THz; pure water; sodium ion concentration; terahertz electromagnetic waves; terahertz time-domain spectroscopy; water absorption coefficient; Dielectrics; Electromagnetic wave absorption; Frequency; Hydrogen; Mirrors; Spectroscopy; Stimulated emission; Submillimeter wave measurements; Time domain analysis; Water;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325641
