Spectroscopy and physics of atoms and molecules

Improved model of the effective dipole moments and absolute ro-vibrational line strengths of the $\mathrm{XY}_2$ asymmetric top molecules in the $X^2B_1$ doublet electronic states

O. V. Gromova, E. S. Bekhtereva, A. N. Kakaulin, O. N. Ulenikov

Research School of High-Energy Physics, Tomsk Polytechnic University, Tomsk, Russia

Abstract: A new effective dipole moment model for the ($\mathrm{XY}_2$ symmetry) molecule in a doublet electronic state is derived that includes (as special cases) all currently known models of effective dipole moment for such type molecules, and allows, at the same time, to take into account an influence of spin-rotation interactions on the effective dipole moment operator which were not taken into account in the preceding studies.

Keywords: asymmetric top molecules in non-singlet electronic states, spin-rotation interactions, absolute line strengths, effective dipole moment operator.

Received: 10.07.2023
Revised: 28.09.2023
Accepted: 28.09.2023

DOI: 10.61011/OS.2023.09.56604.5408-23

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