# Browse Abstracts & Presentations - 2021 International Symposium on Molecular Spectroscopy by Title

• (International Symposium on Molecular Spectroscopy, 2021-06-22)
\begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.28]{Ethylene_nu_7_band_995K_2.3atm.eps} \end{wrapfigure} To address the notable lack of knowledge on high-temperature absorption cross sections of important molecular ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
The mid-infrared (MIR) contains the strong absorption signatures of many molecules, such as Methane and Carbon Dioxide, that are of extreme interest in real-world sensing applications. The miniaturization of spectroscopic ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
\begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.3]{K_Ar_ISMS.eps} \end{wrapfigure} There is considerable ambiguity in the collisional broadening mechanism for the resonance doublets of alkali metals, e.g., potassium ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Recently published work\footnote {DM Hewett, PF Bernath, BE Billinghurst. 2019 “Infrared absorption cross sections of isobutane with hydrogen and nitrogen as broadening gases.” \emph{Journal of Quantitative Spectroscopy ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
Benzonitrile (\chem{C_6H_5CN}), a polar proxy for benzene (\chem{C_6H_6}), has the potential to serve as a highly convenient radio probe for aromatic chemistry, provided this ring can be found in other astronomical sources ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The phenomena of valence tautomerism consists in a particular intramolecular process involving just one reactive species where an intramolecular bond migrates raising to a sometimes different, but not always, molecular ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The study of not only amino acids but its most essential isomers should be of crucial importance for revealing the chemical processes that may have led to life's origin. We here report the first structural characterization ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Hydrides are important molecular constituents of the interstellar and circumstellar media, but there are still many questions regarding their variety and formation. In the envelopes of asymptotic giant branch and red ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We present a line survey of the cold dark core TMC-1 carried out with the YEBES 40m radio telescope in the Q-band. A new set of receivers have been installed in the telescope within the frame of the ERC synergy Nanocosmos ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We used our hybrid program\footnote{I. Kleiner and J. T. Hougen, J. Mol. Spectrosc., 368, 111255 (2020)} to fit an extended dataset consisting of almost 30000 rotational-torsionial-wagging transitions in the MW and FIR ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Vibrational perturbation theory is a commonly-used method for obtaining anharmonic corrections to harmonic zero-order wave functions and energies. The method comes in two main variants, canonical Van Vleck perturbation ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-25)
New particle formation (NPF) plays a crucial role in the formation of secondary aerosol particles, which in turn actively influence the climate radiative forcing balance. The magnitude of this impact is currently unclear, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
The CDMS\footnote{Shortcut: cdms.de; web address: https://cdms.astro.uni-koeln.de/. The CDMS is supported by the Verbundforschung Physik of the BMBF (German Ministry of Science and Education), project ID 05A17PK1.} was ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
A procedure to generate the exact kinetic energy operator in valence coordinates, based on S{\o}rensen's method for constructing non-rigid Hamiltonians, is presented. This method is currently being applied to the ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
As a large amplitude motion, the internal rotation of a methyl group, methyl torsion, is traditionally treated as being separate from the remaining small amplitude vibrations.[1] However, recent studies have shown that ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
This work was motivated by difficulties encountered while trying to calibrate laser excitation spectra, taken in short (1 {cm$^{-1}$}) scans around 438 nm, by matching optogalvanic transitions from a Uranium-Argon hollow ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Continuous-wave optical parametric oscillators (CW-OPOs) can offer broad tuning with high resolution and high power in the mid-infrared (MIR) and have many important potential applications in precision spectroscopy. The ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We report an \textit{ab initio} study on the rovibronic spectroscopy of the open-shell diatomic molecule phosphorous mononitride, PN. The study considers nine lowest electronic states, X$^{1}\Sigma^{+}$, A$^{1}\Pi$, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Methods applicable to the spectroscopic study of non-rigid organic molecular species with various large amplitude motions (torsions and inversions), are shown. Recent studies of ethylene glycol, \chem{C_3O_6H_6} isomers, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Nitrogen-substituted polycyclic aromatic hydrocarbons (PANHs) are fundamental species important in biological molecules, astrochemistry, and combustion. They have been detected on meteorites with non-terrestrial isotopic ...

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