Vol. 29, issue 01, article # 1

Abstract:

Modeling of the rotation-vibration energy levels of the first and second triads as well as the first and second hexads of the D₂¹⁸O, HD¹⁸O, D₂¹⁷O, and HD¹⁷O molecules is performed based of the Watson-type Hamiltonian and the rotation operator written through the Padé–Borel approximants. Rotational, centrifugal distortion and resonance constants as well as mixing coefficients of the resulting wave functions are determined. The scheme of resonance interactions is established. The predictive ability of the effective Hamiltonian parameters obtained is examined in the far extrapolation on rotational quantum numbers.

Keywords:

deuterium substituted isotopologues of water vapor, vibration-rotation spectra, modeling of the energy levels, the effective rotational Hamiltonian

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