Transition dipole-moment of the ν1+ν3 band of acetylene measured with dual-comb Fourier-transform spectroscopy
2017
Abstract The ν 1 + ν 3 vibration band of acetylene (C 2 H 2 ) in the near infrared region was recorded with a dual-comb Fourier-transform spectrometer. We observed 56 transitions from P ( 26 ) to R ( 29 ) at six different column densities. The integral line intensity was determined for each recorded absorption line by fitting the line profile to Lambert-Beer’s law with a Voigt function. Thanks to the outstanding capability of dual-comb spectroscopy to cover a broad spectrum in a relatively short time with high resolution and high frequency precision, we determined the reliable line strength for each ro-vibrational transition as well as the transition dipole moment for this band.
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