Gas-phase CH-Overtone band spectra of methyl acetate and ethyl acetate via incoherent broad-band cavity-enhanced absorption spectroscopy

Mitsunori Araki, Takeru Sato, Takahiro Oyama, Shoma Hoshino, Koichi Tsukiyama

研究成果: Article査読

抄録

Gas-phase overtone bands of methyl acetate and ethyl acetate were detected for up to v = 6–0 by incoherent broad-band cavity-enhanced absorption spectroscopy. The signal-to-noise ratios of v = 4–0 were achieved to be 40–50 by the 100 s integration time, suggesting an application possibility of this spectroscopic technique for environmental monitoring. Profiles of the observed overtone bands were analyzed in detail with the aid of theoretical calculations and their remarkable peaks were assigned to the progressions starting from the symmetric CH-stretching bands. The harmonic frequencies, the anharmonicities, and the dissociation energies were derived.

本文言語English
論文番号139568
ジャーナルChemical Physics Letters
796
DOI
出版ステータスPublished - 6月 2022

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