Abstract
Calculations of the contribution from excited electronic states to parameters of the fine structure of the ground electronic state of an OH radical are made in the framework of perturbation theory (Van Vleck contact transformations). The potential energy functions of the electronic states and required matrix elements of spin-orbit and electron-rotation coupling are found from first principles. It is shown that repulsive (unbound) excited electronic states play a crucial role in the dependence of parameters of the fine structure of the ground state on the magnitude of the vibrational excitation.
Similar content being viewed by others
REFERENCES
J. Meléndez and B. Barbuy, Astrophys. J. 575, 474 (2002).
M. Asplund, N. Grevesse, A. J. Sauval, et al., Astron. Astrophys. 417, 751 (2004).
J. R. Goicoechea and J. Cernicharo, Astrophys. J. 576, L77 (2002).
A. B. Meinel, Astrophys. J. 111, 555 (1950).
A. B. Meinel, Astrophys. J. 112, 120 (1950).
N. Grevesse and A. J. Sauval, and E. F. van Dishoeck, Astron. Astrophys. 141, 10 (1984).
Y. Smith and D. L. Lambert, Astrophys. J. 311, 843 (1986).
G. Piccioni, P. Drossart, L. Zasova, et al., Astron. Astrophys. 483, L29 (2008).
T. Clancy, B. J. Sor, A. Garcia-Munoz, et al., Icarus 226, 272 (2013).
N. Schoerghofer, M. Benna, A. A. Berezhnoy, et al., Space Sci. Rev. 217 (6), 74 (2021).
I. E. Gordon, L. S. Rothman, R. J. Hargreaves, et al., J. Quant. Spectrosc. Radiat. Transfer 277, 107949 (2022).
T. Delahaye, R. Armante, N. A. Scott, et al., J. Mol. Spectrosc. 380, 111510 (2021).
J. M. Brown, E. A. Colbourne, J. K. G. Watson, and F. D. Wayne, J. Mol. Spectrosc. 74, 294 (1979).
P. F. Bernath and R. Colin, J. Mol. Spectrosc. 257, 20 (2009).
E. A. Pazyuk, A. V. Zaitsevskii, A. V. Stolyarov, et al., Russ. Chem. Rev. 84, 1001 (2015).
S. V. Kozlov, E. A. Pazyuk, and A. V. Stolyarov, Opt. Spectrosc. 125, 464 (2018).
S. V. Kozlov, A. V. Stolyarov, and E. A. Pazyuk, Opt. Spectrosc. 131 (8) (2023, in press).
D. R. Yarkony, J. Chem. Phys. 97, 1838 (1992).
G. Parlant and D. R. Yarkony, J. Chem. Phys. 110, 363 (1999).
J. S. A. Brooke, P. F. Bernath, C. M. Western, et al., J. Quant. Spectrosc. Radiat. Transfer 168, 142 (2016).
H. Werner, P. Knowles, G. Knizia, et al., MOLPRO, Version 2010.1, a package of ab initio programs, 2010. http://www.molpro.net.
S. R. Langhoff, M. L. Sink, R. H. Pritchard, and C. W. Kern, J. Mol. Spectrosc. 96, 200 (1982).
Funding
This work was supported by the Russian Science Foundation, project no. 22-23-00272 (https://rscf.ru/project/22-23-00272/).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors of this work declare that they have no conflicts of interest.
Additional information
Translated by G. Levina
Publisher’s Note.
Pleiades Publishing remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Kozlov, S.V., Pazyuk, E.A. & Stolyarov, A.V. Effect of Repulsive Electronic States on the Parameters of the Fine Structure of the Ground Electronic State of an OH Radical. Russ. J. Phys. Chem. (2024). https://doi.org/10.1134/S0036024424050169
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1134/S0036024424050169