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 Title: DUAL-COMB SPECTROSCOPY OF THE ν1+ ν3 BAND OF ACETYLENE: INTENSITY AND TRANSITION DIPOLE MOMENT Author(s): Iwakuni, Kana Contributor(s): Sasada, Hiroyuki; Hong, Feng-Lei; Onae, Atsushi; Inaba, Hajime; Yamada, Koichi MT; Okubo, Sho Subject(s): Instrument/Technique Demonstration Abstract: The $nu_1$+$nu_3$ vibration band of $^{12}$C$_2$H$_2$ is recorded with a homemade dual-comb spectrometer footnote{S. Okubo $et$ $al$., Applied Physics Express underline{8}, 082402 (2015).}. The spectral resolution and the accuracy of frequency determination are high, and the bandwidth is broad enough to take spectrum of the whole band in one shot. The last remarkable competence enables us to record all the spectral lines under constant experimental conditions. The linewidth and line strength of the P(26) to R(29) transitions are determined by fitting the line profile to Lambert-Beer’s law with a Voigt function. In the course of analysis, we found the ortho-para dependence of the pressure-broadening coefficient footnote{K.Iwakuni $et$ $al.$, 71th ISMS, WK15}footnote{K. Iwakuni $et$ $al.$, Physical Review Letters underline{117}, 143902 (2016).}. This time, we have determined the transition dipole moment of the $nu_1$+$nu_3$ band. It is noted that the transition dipole moment determined from the ortho lines agrees with that from the para lines._x000d_ _x000d_ Issue Date: 6/19/2017 Publisher: International Symposium on Molecular Spectroscopy Citation Info: APS Genre: CONFERENCE PAPER/PRESENTATION Type: Text Language: English URI: http://hdl.handle.net/2142/97160 DOI: 10.15278/isms.2017.MK01 Date Available in IDEALS: 2017-07-27
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