Terahertz Time Domain Spectroscopy for Structure-II Gas Hydrates

Kei Takeya; Caihong Zhang; Iwao Kawayama; Hironaru Murakami; Peter Uhd Jepsen; Jian Chen; Peiheng Wu; Kazunari Ohgaki; Masayoshi Tonouchi

doi:10.1143/APEX.2.122303

Terahertz Time Domain Spectroscopy for Structure-II Gas Hydrates

Kei Takeya, Caihong Zhang, Iwao Kawayama, Hironaru Murakami, Peter Uhd Jepsen, Jian Chen, Peiheng Wu, Kazunari Ohgaki, Masayoshi Tonouchi

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

For the nondestructive inspection of gas hydrates, terahertz (THz) time-domain spectroscopy (TDS) was applied to tetrahydrofuran (THF) hydrate and propane hydrate. The absorption of propane hydrate monotonically increases with frequency, similar to the case of ice, while THF hydrate has a characteristic broad absorption peak at 0.5 THz corresponding to the dipole moment of THF molecules. The refractive indices of THF and propane hydrates are 1.725 and 1.775 at 1 THz, respectively, and show a slight but clear difference from the refractive index of ice (1.79). THz-TDS is a potentially useful technique for the ondestructive inspection of gas hydrates. # 2009 The Japan Society of Applied Physics

Original language	English
Journal	Applied Physics Express
Volume	2
Pages (from-to)	122303
ISSN	1882-0778
DOIs	https://doi.org/10.1143/APEX.2.122303
Publication status	Published - 2009

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title = "Terahertz Time Domain Spectroscopy for Structure-II Gas Hydrates",

abstract = "For the nondestructive inspection of gas hydrates, terahertz (THz) time-domain spectroscopy (TDS) was applied to tetrahydrofuran (THF) hydrate and propane hydrate. The absorption of propane hydrate monotonically increases with frequency, similar to the case of ice, while THF hydrate has a characteristic broad absorption peak at 0.5 THz corresponding to the dipole moment of THF molecules. The refractive indices of THF and propane hydrates are 1.725 and 1.775 at 1 THz, respectively, and show a slight but clear difference from the refractive index of ice (1.79). THz-TDS is a potentially useful technique for the ondestructive inspection of gas hydrates. # 2009 The Japan Society of Applied Physics",

author = "Kei Takeya and Caihong Zhang and Iwao Kawayama and Hironaru Murakami and Jepsen, {Peter Uhd} and Jian Chen and Peiheng Wu and Kazunari Ohgaki and Masayoshi Tonouchi",

year = "2009",

doi = "10.1143/APEX.2.122303",

language = "English",

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T1 - Terahertz Time Domain Spectroscopy for Structure-II Gas Hydrates

AU - Takeya, Kei

AU - Zhang, Caihong

AU - Kawayama, Iwao

AU - Murakami, Hironaru

AU - Jepsen, Peter Uhd

AU - Chen, Jian

AU - Wu, Peiheng

AU - Ohgaki, Kazunari

AU - Tonouchi, Masayoshi

PY - 2009

Y1 - 2009

N2 - For the nondestructive inspection of gas hydrates, terahertz (THz) time-domain spectroscopy (TDS) was applied to tetrahydrofuran (THF) hydrate and propane hydrate. The absorption of propane hydrate monotonically increases with frequency, similar to the case of ice, while THF hydrate has a characteristic broad absorption peak at 0.5 THz corresponding to the dipole moment of THF molecules. The refractive indices of THF and propane hydrates are 1.725 and 1.775 at 1 THz, respectively, and show a slight but clear difference from the refractive index of ice (1.79). THz-TDS is a potentially useful technique for the ondestructive inspection of gas hydrates. # 2009 The Japan Society of Applied Physics

AB - For the nondestructive inspection of gas hydrates, terahertz (THz) time-domain spectroscopy (TDS) was applied to tetrahydrofuran (THF) hydrate and propane hydrate. The absorption of propane hydrate monotonically increases with frequency, similar to the case of ice, while THF hydrate has a characteristic broad absorption peak at 0.5 THz corresponding to the dipole moment of THF molecules. The refractive indices of THF and propane hydrates are 1.725 and 1.775 at 1 THz, respectively, and show a slight but clear difference from the refractive index of ice (1.79). THz-TDS is a potentially useful technique for the ondestructive inspection of gas hydrates. # 2009 The Japan Society of Applied Physics

U2 - 10.1143/APEX.2.122303

DO - 10.1143/APEX.2.122303

M3 - Journal article

SN - 1882-0778

VL - 2

SP - 122303

JO - Applied Physics Express

JF - Applied Physics Express

ER -

Terahertz Time Domain Spectroscopy for Structure-II Gas Hydrates

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