Accurate broadband rotational BWO-based spectroscopy

Krupnov, A. F.; Tretyakov, M.Yu.; Belov, S. P.; Golubiatnikov, G. Yu.; Паршин, В.В.; Koshelev, М.А.; Makarov, D. S.; Serov, E. A.

doi:10.1016/j.jms.2012.06.010

Cited by 17 publications

(4 citation statements)

References 53 publications

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“…The radiation bandwidth is much less than 1 kHz, which allows neglecting the spectral resolution of the instrument in the absorption data analysis. More details on the radiation source and its precision digital frequency control can be found in [30] and references therein.…”

Section: Methodsmentioning

confidence: 99%

CO-Ar collisions: ab initio model matches experimental spectra at a sub percent level over a wide pressure range

Serov

Stolarczyk

Makarov

et al. 2021

Journal of Quantitative Spectroscopy and Radiative Transfer

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Section: Methodsmentioning

confidence: 99%

CO-Ar collisions: ab initio model matches experimental spectra at a sub percent level over a wide pressure range

Serov

Stolarczyk

Makarov

et al. 2021

Journal of Quantitative Spectroscopy and Radiative Transfer

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“…The continuity is crucial for unambiguous assignment of observed lines. At the time of the experiment, such broadband continuous recordings were not possible in this spectral range as the radiation frequency was controlled using a phase locking loop systems with poor scanning ability (see review [37] and references therein). Frequency measurements in the spectrometer were calibrated using the lines from a SO 2 reference spectrum [38].…”

Section: Experimental Details Of the Observation Of Sub-millimeter Sp...mentioning

confidence: 99%

Variational analysis of HF dimer tunneling rotational spectra using an ab initio potential energy surface

Polyansky,

Ovsyannikov,

Tennyson

et al. 2021

Preprint

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A very accurate, (HF) 2 potential energy surface (PES) due to Huang et al. (J. Chem. Phys., 150, 154302 (2019)) is used to calculate the energy levels of the HF dimer by solving the nuclear-motion Schrödinger equation using variational program WAVR4. Calculations on an extended range of rotational states show very good agreement with experimental data. In particular the known empirical rotational constants for the ground and some observed excited vibrational states are reproduced with an accuracy of about 50 MHz. This level of accuracy is shown to extend to higher excited inter-molecular vibrational states v and higher excited rotational quantum numbers (J, K a ). These calculations allow the assignment of 3 new J-branches in an HF dimer tunneling-rotation spectra recorded 30 years ago. These branches belong to excited K a = 4 state of the ground vibrational state, and K a = 0 states of excited inter-molecular vibrational states.

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“…In this report we present a complex of broadband THz/subTHz spectrometers (see [1] and references therein) with complementary abilities developed in IAP RAS. The complex consists of three spectrometers with different methods of spectra recording covering the widest pressure range from a part of mTorr to a few atmospheres.…”

mentioning

confidence: 99%