### Аннотация

The high resolution infrared spectra of hydrogen sulfide, H_{2} ^{M}S (M=32,33,34,36) in the natural abundance (95.041% of H_{2} ^{32}S, 0.748% of H_{2} ^{33}S, 4.196% of H_{2} ^{34}S and 0.015% of H_{2} ^{36}S), were recorded with a Bruker IFS 125HR Fourier transform infrared spectrometer (Zürich prototype ZP2001) and analyzed in the ν_{2} fundamental band region (700 – 1800 cm−1). In the experimental spectra 1564, 1019, and 685 transitions were assigned to the ν_{2} bands of H_{2} ^{32}S, H_{2} ^{34}S and H_{2} ^{33}S (the maximum values of the quantum numbers are J^{max.}/K_{a} ^{max.} = 24/17, 20/14, 17/14). The subsequent weighted fits of experimentally assigned transitions were made with the Watson Hamiltonian and a set of parameters which reproduces the initial 333/249/216 infrared ro-vibrational energy values has been obtained from the assigned experimental line positions with the root mean square deviations of drms=2.2×10^{−4} cm−1, 1.7×10^{−4} cm−1 and 1.5×10^{−4} cm−1 for the H_{2} ^{32}S, H_{2} ^{34}S and H_{2} ^{33}S isotopologues. Additionally, 703, 182 and 23 transitions with the values of quantum numbers J^{max.}/K_{a} ^{max.} = 18/14, 14/8 and 9/6 belonging to the 2ν_{2}−ν_{2} hot bands of H_{2} ^{32}S, H_{2} ^{34}S and H_{2} ^{33}S (for the first time for the hot bands of the H_{2} ^{34}S and H_{2} ^{33}S species) were assigned in the experimental spectra. Rotational parameters of the ground vibrational state of H_{2} ^{36}S were re-determined, and, for the first time, 103 transitions (J^{max.}=11, K_{a} ^{max.}=8) of the ν_{2} band of H_{2} ^{36}S were assigned in the experimental spectra. An analysis of ro-vibrational line strengths of 61 experimental isolated unsaturated and not too weak lines of the ν_{2} band of H_{2} ^{32}S was made (J^{max.}=9, K_{a} ^{max.}=8), and five effective dipole moment parameters were obtained from the fit which reproduce the initial experimental line intensities with the d_{rms} = 1.4 %. An analogous analysis was performed for the H_{2} ^{34}S and H_{2} ^{33}S isotopologues. The half-widths analysis was made on the basis of the multi-spectrum fit with the Hartmann-Tran line profile, and self-pressure broadening coefficients were estimated for a few tens of lines for the three most abundant isotopologues.

Язык оригинала | Английский |
---|---|

Страницы (с-по) | 76-98 |

Число страниц | 23 |

Журнал | Journal of Quantitative Spectroscopy and Radiative Transfer |

Том | 216 |

DOI | |

Состояние | Опубликовано - 1 сен 2018 |

### ASJC Scopus subject areas

- Radiation
- Atomic and Molecular Physics, and Optics
- Spectroscopy

## Fingerprint Подробные сведения о темах исследования «Extended analysis of the high resolution FTIR spectra of H<sub>2</sub> <sup>M</sup>S (M=32,33,34,36) in the region of the bending fundamental band: The ν<sub>2</sub> and 2ν<sub>2</sub>−ν<sub>2</sub> bands: Line positions, strengths, and pressure broadening widths». Вместе они формируют уникальный семантический отпечаток (fingerprint).

## Цитировать

_{2}

^{M}S (M=32,33,34,36) in the region of the bending fundamental band: The ν

_{2}and 2ν

_{2}−ν

_{2}bands: Line positions, strengths, and pressure broadening widths.

*Journal of Quantitative Spectroscopy and Radiative Transfer*,

*216*, 76-98. https://doi.org/10.1016/j.jqsrt.2018.05.009