Multiplexed direct-frequency-comb Vernier spectroscopy of carbon dioxide 2ν1 + ν3 ro-vibrational combination band.
M Siciliani de CumisR EramoN ColuccelliG GalzeranoPaolo LaportaP Cancio PastorPublished in: The Journal of chemical physics (2018)
We investigated a set of nineteen 12C16O2 transitions of the 2ν1 + ν3 ro-vibrational band in the spectral region from 5064 to 5126 cm-1 at different pressures, using frequency-comb Vernier spectroscopy. Our spectrometer enabled the systematic acquisition of molecular absorption profiles with high precision. Spectroscopic parameters, namely, transition frequency, linestrength, and self-pressure broadening coefficient, have been accurately determined by using a global fit procedure. These data are in agreement with theoretical values contained in HITRAN2016 database [I. E. Gordon et al., J. Quant. Spectrosc. Radiat. Transfer 203, 3-69 (2017)] at the same precision level. A moderate improvement of the line intensity determinations, by a factor 1.5 in the best case [P(10) transition at 5091.6 cm-1], should be noticed, projecting direct-comb-Vernier-spectroscopy as an adequate tool for spectral intensity calibration.
Keyphrases
- deep learning
- high resolution
- carbon dioxide
- single molecule
- high intensity
- optical coherence tomography
- density functional theory
- solid state
- molecular dynamics simulations
- atomic force microscopy
- molecular docking
- big data
- energy transfer
- single cell
- minimally invasive
- mass spectrometry
- dual energy
- computed tomography
- emergency department
- molecular dynamics
- high speed