Cavity-ring-down spectroscopy of the heavy ozone isotopologue 18O3: Analysis of a high energy band near 95% of the dissociation threshold

Vasilchenko, S.; Barbe, A.; Starikova, E.; Kassi, S.; Mondelain, D.; Campargue, A.; Tyuterev, V. G.

doi:10.1016/j.jqsrt.2021.108017

Cited by 7 publications

(9 citation statements)

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“…Finally, in the most recent analysis of the 7ν 1 + ν 3 band of 18 O 3 , the highest so far assigned vibration–rotation level (701) 27 720 was reached by an observed transition in the CRDS spectra [ 150 ]. The energy of this “highest” level is 8355.3 cm −1 , corresponding to 96.9% of the dissociation energy for 18 O 3 , which is theoretically estimated at about 8620 cm −1 .…”

Section: Recent Resultsmentioning

confidence: 99%

“…On the other hand, recent observations [ 33 , 150 ] near the dissociation threshold can provide information on the density of the bound ro-vibrational state, whereas their analyses can give hints on a possible delocalization of wave-functions among potential wells [ 32 ].…”

Section: Discussionmentioning

confidence: 99%

“…For this reason, the CRDS technique mentioned in Section 4.2.2 . was used to register the corresponding spectra [ 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 ], unlike FTS used in the lower frequency region.…”

Section: Spectroscopy In the Infraredmentioning

confidence: 99%

“…This has permitted the observation of very weak lines with intensities down to 3 × 10 −29 cm/molecule at 296 K. This is three orders of magnitude lower than the weakest lines recorded with the FTS experimental set up and nine orders of magnitude lower than the strongest lines of the ν 3 band [64]. The CRDS set up was described in detail in [136] (and references therein) and was used for the analyses of many ozone spectra given in [137][138][139][140][141][142][143][144] for 16 O 3 , [145][146][147][148][149][150] for 18 O 3 and [151][152][153][154] for 18 O- 16 O mixtures of ozone.…”

Section: Ab Initio Calculations For Ozone Line Positionsmentioning

confidence: 99%

“…The reader can find all the relevant details in [136] and references therein. Other details concerning the specific case of ozone are given in [137][138][139][140][141][142][143][144][145][146][147][148][149][150][151][152][153][154]. Let us just recall a few important points in this review.…”

Section: Data Reductionmentioning

confidence: 99%

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High Resolution Infrared Spectroscopy in Support of Ozone Atmospheric Monitoring and Validation of the Potential Energy Function

et al. 2022

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The first part of this review is a brief reminder of general information concerning atmospheric ozone, particularly related to its formation, destruction, observations of its decrease in the stratosphere, and its increase in the troposphere as a result of anthropogenic actions and solutions. A few words are said about the abandonment of the Airbus project Alliance, which was expected to be the substitute of the supersonic Concorde. This project is over due to the theoretical evaluation of the impact of a fleet in the stratosphere and has been replaced by the A380, which is now operating. The largest part is devoted to calculations and observations of the transitions in the infrared range and their applications for the atmosphere based both on effective models (Hamiltonian, symmetry rules, and dipole moments) and ab initio calculations. The complementarities of the two approaches are clearly demonstrated, particularly for the creation of an exhaustive line list consisting of more than 300,000 lines reaching experimental accuracies (from 0.00004 to 0.001 cm−1) for positions and a sub percent for the intensities in the 10 microns region. This contributes to definitively resolving the issue of the observed discrepancies between line intensity data in different spectral regions: between the infrared and ultraviolet ranges, on the one hand, and between 10 and 5 microns on the other hand. The following section is devoted to the application of recent work to improve the knowledge about the behavior of potential function at high energies. A controversial issue related to the shape of the potential function in the transition state range near the dissociation is discussed.

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Section: Recent Resultsmentioning

confidence: 99%