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

• (International Symposium on Molecular Spectroscopy, 2021-06-22)
The density dependence of pressurized and supercritical carbon dioxide (CO$_{2}$) electronic absorption spectra was explored by vacuum ultraviolet (VUV) spectroscopy over the wavelength range 1455-2000 \AA. The peak energy ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
To improve sensitivity of absorption spectrometers a source modulation with lock-in detection is usually employed. In the Kharkiv millimeter wave spectrometer we employ DDS based square-wave frequency modulation which is ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We determined the electronic nature, the dipole moments and the torsional barriers in the ground and electronically lowest excited singlet state of substituted indoles using rotationally resolved laser induced fluorescence ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
The development of Cavity-Enhanced Techniques and Cavity Ring Down Spectroscopy has allowed many sensitive infrared measurements to be undertaken. We have constructed a THz resonator with a high finesse to form the basis ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
The McLafferty rearrangement is a well-known process in mass spectrometry. The Mclafferty rearrangement is dissociations of ionized ketones with accompanying hydrogen transfer on the gamma carbon atom to generate an enol ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Optical frequency comb spectroscopy has proven a very useful tool for high resolution molecular spectroscopy. Frequency combs based on quantum cascade lasers (QCL) offer the possibility to easily explore the mid-infrared ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
A discrepancy between theoretical and experimental values of the rotational barrier in benzaldehyde has been observed, which was attributed to inaccurate experimental results in part.$\footnote{I.A. Godunov, V.A. Bataev, ... application/pdf PDF (338kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) The Rydberg atom spectroscopy, exploited for SI-traceable electrometry, allowed to measure weak microwave electric fields at the$\mu$V/cm level. The Doppler-free spectroscopy methods allowed recently significant improvements ... application/pdf PDF (141kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) We report a proof-of-principle demonstration of intracavity pump-probe, cavity ringdown (CRD) detection in a three-mirror, traveling-wave cavity. With both cavity-enhanced pump$power$and probe absorption$pathlength$, ... application/pdf PDF (298kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) The transduction of protons between distinct donor and acceptor sites, as often directed by attendant hydrogen bonds, is a ubiquitous chemical transformation essential for all of acid/base chemistry, yet the role of selective ... application/pdf PDF (8MB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) Galactic Habitability is a concept of growing popularity. So far, research has been done in understanding the temporal and spatial evolution of a Galactic Habitable Zone (GHZ) based on parameters such as local SN rate, ... application/pdf PDF (407kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) Large difference of chemical compositions between molecular clouds and comets is a big question for astrochemistry. The case of a pre-biotic molecule \chem{CH_3NCO} is one of them. The abundance ratio of [\chem{CH_3NCO}] ... application/pdf PDF (857kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) Molecular outflows are crucial for us to understand not only the internal structure and conditions close to protostars, but also probe the morphology and the dynamics of the chemistry in the surrounding cloud. But, the ... application/pdf PDF (317kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) When molecules are captured in a helium nanodroplet, the rate of cooling to an equilibrium temperature of ca. 0.4 K is faster than the rate of isomerization, resulting in “shock-freezing” that kinetically traps molecules ... application/pdf PDF (195kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) Polycyclic Aromatic Hydrocarbons (PAHs) have long been invoked in the study of interstellar and protostellar sources, but the unambiguous identification of any single PAH has proven elusive until very recently. As a result, ... application/pdf PDF (5MB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) Silicon chemistry is an extensive research topic due to its importance for industry and technology, and because of its natural abundance on earth. Silicon is a versatile element, its applications range from pure silicon ... application/pdf PDF (731kB) • (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 ... application/pdf PDF (859kB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) Plasmonic metal nanoparticles exhibit strong and tunable light-matter interactions which have enabled a variety of applications. Alongside their strong linear extinction, plasmonic nanoparticles have also been noted for ... application/pdf PDF (3MB) • (International Symposium on Molecular Spectroscopy, 2021-06-22) In high angular momentum ($\ell \geq 3\$) Rydberg states, the centrifugal barrier hinders close approach of the Rydberg electron to the ion-core. As a result, these core-nonpenetrating Rydberg states can be well described ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Using the NICE-OHMS (noise-immune-cavity-enhanced optical-heterodyne-molecular spectroscopy) technique, a large number of rovibrational transitions have been observed in the 7000-7350 \wn\ window for \chem{H_2^{16}O} [Nat. ...

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