Precision spectroscopy and comprehensive analysis of perturbations in the A                        1                        ∏(v = 0) state of                         13                        C                        18                        O

R. Hakalla; T. M. Trivikram; A. N. Heays; E. J. Salumbides; N. de Oliveira; R. W. Field; W. Ubachs

doi:10.1080/00268976.2018.1495848

Precision spectroscopy and comprehensive analysis of perturbations in the A ¹ ∏(v = 0) state of ¹³ C ¹⁸ O

R. Hakalla^*, T. M. Trivikram, A. N. Heays, E. J. Salumbides, N. de Oliveira, R. W. Field, W. Ubachs

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

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Abstract

We have reinvestigated the A (Formula presented.) level of ¹³ C ¹⁸ O using new high-resolution spectra obtained via multi-photon laser excitation as well as with synchrotron-based Fourier-transform absorption spectroscopy of the A (Formula presented.), e (Formula presented.), d (Formula presented.), a (Formula presented.), and a (Formula presented.) bands. In addition, Fourier-transform emission spectroscopy in the visible range is performed on the (Formula presented.) band. Spectra of the B (Formula presented.) band are measured in order to tie information from the latter emission data to the level structure of A (Formula presented.). The high pressures in the absorption cell at the synchrotron and the high temperatures in the emission discharge permitted monitoring of high rotational quantum levels in A (Formula presented.) up to J=43. All information, in total over 900 spectral lines, was included in an effective Hamiltonian analysis of the A (Formula presented.) levels that are directly perturbed by the e (Formula presented.), d (Formula presented.), a (Formula presented.), D (Formula presented.), I (Formula presented.) close-lying levels and the e (Formula presented.), d (Formula presented.), a (Formula presented.) remote levels, as well being indirectly influenced by the a (Formula presented.) state. The influence of 9 further perturber levels and their interactions was investigated and are not significant for reproducing the present experimental data. This analysis leads to a much improved description in terms of molecular constants and interaction parameters, compared to previous studies of the same energy region for other CO isotopologues.

Original language	English
Pages (from-to)	79-96
Number of pages	18
Journal	Molecular Physics
Volume	117
Issue number	1
Early online date	25 Jul 2018
DOIs	https://doi.org/10.1080/00268976.2018.1495848
Publication status	Published - 2 Jan 2019

Funding

RH thanks LASERLAB-EUROPE for support of this research (Grants EUH2020-RIP-654148 and EC’s-SPF-284464) as well as European Regional Development Fund and the Polish state budget within the framework of the Carpathian Regional Operational Programme (RPPK.01.03.00-18-001/10) through the funding of the Center for Innovation and Transfer of Natural Science and Engineering Knowledge of the University of Rzeszów. AH acknowledges support from the Postdoctoral Fellowship program of PSL Research University Paris and NASA Postdoctoral Program. WU acknowledges financial support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 670168). RWF is grateful to the US National Science Foundation (Grant CHE-1361865).

Funders	Funder number
US National Science Foundation	CHE-1361865
National Aeronautics and Space Administration
Horizon 2020 Framework Programme
Seventh Framework Programme	1361865, 670168, 654148, 284464
European Research Council
European Regional Development Fund	RPPK.01.03.00-18-001/10

Keywords

carbon monoxide
deperturbation analysis
Fourier-transform spectroscopy
isotopologues
Laser spectroscopy

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10.1080/00268976.2018.1495848

Precision spectroscopy and comprehensive analysis of perturbations in the A1 v 0 state of 13C18OFinal published version, 2.82 MBLicence: Article 25fa Dutch Copyright Act

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Hakalla, R., Trivikram, T. M., Heays, A. N., Salumbides, E. J., de Oliveira, N., Field, R. W., & Ubachs, W. (2019). Precision spectroscopy and comprehensive analysis of perturbations in the A ¹ ∏(v = 0) state of ¹³ C ¹⁸ O. Molecular Physics, 117(1), 79-96. https://doi.org/10.1080/00268976.2018.1495848

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abstract = " We have reinvestigated the A (Formula presented.) level of 13 C 18 O using new high-resolution spectra obtained via multi-photon laser excitation as well as with synchrotron-based Fourier-transform absorption spectroscopy of the A (Formula presented.), e (Formula presented.), d (Formula presented.), a (Formula presented.), and a (Formula presented.) bands. In addition, Fourier-transform emission spectroscopy in the visible range is performed on the (Formula presented.) band. Spectra of the B (Formula presented.) band are measured in order to tie information from the latter emission data to the level structure of A (Formula presented.). The high pressures in the absorption cell at the synchrotron and the high temperatures in the emission discharge permitted monitoring of high rotational quantum levels in A (Formula presented.) up to J=43. All information, in total over 900 spectral lines, was included in an effective Hamiltonian analysis of the A (Formula presented.) levels that are directly perturbed by the e (Formula presented.), d (Formula presented.), a (Formula presented.), D (Formula presented.), I (Formula presented.) close-lying levels and the e (Formula presented.), d (Formula presented.), a (Formula presented.) remote levels, as well being indirectly influenced by the a (Formula presented.) state. The influence of 9 further perturber levels and their interactions was investigated and are not significant for reproducing the present experimental data. This analysis leads to a much improved description in terms of molecular constants and interaction parameters, compared to previous studies of the same energy region for other CO isotopologues. ",

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author = "R. Hakalla and Trivikram, {T. M.} and Heays, {A. N.} and Salumbides, {E. J.} and {de Oliveira}, N. and Field, {R. W.} and W. Ubachs",

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Hakalla, R, Trivikram, TM, Heays, AN, Salumbides, EJ, de Oliveira, N, Field, RW & Ubachs, W 2019, 'Precision spectroscopy and comprehensive analysis of perturbations in the A ¹ ∏(v = 0) state of ¹³ C ¹⁸ O', Molecular Physics, vol. 117, no. 1, pp. 79-96. https://doi.org/10.1080/00268976.2018.1495848

Precision spectroscopy and comprehensive analysis of perturbations in the A ¹ ∏(v = 0) state of ¹³ C ¹⁸ O. / Hakalla, R.; Trivikram, T. M.; Heays, A. N. et al.
In: Molecular Physics, Vol. 117, No. 1, 02.01.2019, p. 79-96.

Research output: Contribution to Journal › Article › Academic › peer-review

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AU - Ubachs, W.

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AB - We have reinvestigated the A (Formula presented.) level of 13 C 18 O using new high-resolution spectra obtained via multi-photon laser excitation as well as with synchrotron-based Fourier-transform absorption spectroscopy of the A (Formula presented.), e (Formula presented.), d (Formula presented.), a (Formula presented.), and a (Formula presented.) bands. In addition, Fourier-transform emission spectroscopy in the visible range is performed on the (Formula presented.) band. Spectra of the B (Formula presented.) band are measured in order to tie information from the latter emission data to the level structure of A (Formula presented.). The high pressures in the absorption cell at the synchrotron and the high temperatures in the emission discharge permitted monitoring of high rotational quantum levels in A (Formula presented.) up to J=43. All information, in total over 900 spectral lines, was included in an effective Hamiltonian analysis of the A (Formula presented.) levels that are directly perturbed by the e (Formula presented.), d (Formula presented.), a (Formula presented.), D (Formula presented.), I (Formula presented.) close-lying levels and the e (Formula presented.), d (Formula presented.), a (Formula presented.) remote levels, as well being indirectly influenced by the a (Formula presented.) state. The influence of 9 further perturber levels and their interactions was investigated and are not significant for reproducing the present experimental data. This analysis leads to a much improved description in terms of molecular constants and interaction parameters, compared to previous studies of the same energy region for other CO isotopologues.

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KW - Fourier-transform spectroscopy

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Hakalla R, Trivikram TM, Heays AN, Salumbides EJ, de Oliveira N, Field RW et al. Precision spectroscopy and comprehensive analysis of perturbations in the A ¹ ∏(v = 0) state of ¹³ C ¹⁸ O. Molecular Physics. 2019 Jan 2;117(1):79-96. Epub 2018 Jul 25. doi: 10.1080/00268976.2018.1495848