Results 21 to 30 of about 167,062 (317)

Feedback Optimization Strategy for Rotational Alignment Echo Spectroscopy

Advanced Photonics Research, 2023
The recent discovery of rotational echoes has contributed to extend the applications of field‐free molecular alignment to short time scales, namely to a temporal region preceding the first alignment revival of the molecule. Most echo measurements require
Manon Bournazel, Antoine Espaignol, Pierre Béjot, Edouard Hertz, Franck Billard, Olivier Faucher   +5 more
doaj   +1 more source

Electric Dipole Moments from Stark Effect in Supersonic Expansion: n-Propanol, n-Butanol, and n-Butyl Cyanide

Molecules, 2023
The orientation and magnitude of the molecular electric dipole moment are key properties relevant to topics ranging from the nature of intermolecular interactions to the quantitative analysis of complex gas-phase mixtures, such as chemistry in ...
Zbigniew Kisiel, Krzysztof Habdas
doaj   +1 more source

Accuracy Meets Interpretability for Computational Spectroscopy by Means of Hybrid and Double-Hybrid Functionals

Frontiers in Chemistry, 2020
Accuracy and interpretability are often seen as the devil and holy grail in computational spectroscopy and their reconciliation remains a primary research goal.
Vincenzo Barone, Giorgia Ceselin, Marco Fusè, Nicola Tasinato   +3 more
doaj   +1 more source

The missing conformer: A comprehensive rotational spectroscopy study and astronomical search of two conformers of methyl cyanoacetate

Frontiers in Astronomy and Space Sciences, 2022
We performed a comprehensive investigation of methyl cyanoacetate (MCA) using high-resolution Fourier transform rotational spectroscopy. Two low energy conformers of MCA were observed in the vibrational ground state, in selected frequency regions from 2 ...
Gayatri Batra, Gayatri Batra, Pablo Pinacho, Amanda L. Steber, Amanda L. Steber, Víctor M. Rivilla, Jesús Martín-Pintado, Izaskun Jiménez-Serra, Melanie Schnell, Melanie Schnell   +9 more
doaj   +1 more source

Skeletal Torsion Tunneling and Methyl Internal Rotation: The Coupled Large Amplitude Motions in Phenyl Acetate

Molecules, 2022
The rotational spectrum of phenyl acetate, CH3COOC6H5, is measured using a free jet absorption millimeter-wave spectrometer in the range from 60 to 78 GHz and two pulsed jet Fourier transform microwave spectrometers covering a total frequency range from ...
Lynn Ferres, Luca Evangelisti, Assimo Maris, Sonia Melandri, Walther Caminati, Wolfgang Stahl, Ha Vinh Lam Nguyen   +6 more
doaj   +1 more source

Spectroscopic Characterization of 3-Aminoisoxazole, a Prebiotic Precursor of Ribonucleotides

Molecules, 2022
The processes and reactions that led to the formation of the first biomolecules on Earth play a key role in the highly debated theme of the origin of life.
Alessio Melli, Mattia Melosso, Kevin G. Lengsfeld, Luca Bizzocchi, Víctor M. Rivilla, Luca Dore, Vincenzo Barone, Jens-Uwe Grabow, Cristina Puzzarini   +8 more
doaj   +1 more source

Accurate Molecular Structure Determination by Femtosecond Degenerate Four-Wave Mixing

CHIMIA, 2006
Femtosecond degenerate four-wave mixing (fs-DFWM) is a Raman scattering type of rotational coherence spectroscopy that can be utilized for the measurement of highly accurate rotational and centrifugal constants of nonpolar molecules.
Dominique S. Kummli, Hans M. Frey, Samuel Leutwyler   +2 more
doaj   +1 more source

Seven Conformations of the Macrocycle Cyclododecanone Unveiled by Microwave Spectroscopy

Molecules, 2021
The physicochemical properties and reactivity of macrocycles are critically shaped by their conformations. In this work, we have identified seven conformations of the macrocyclic ketone cyclododecanone using chirped-pulse Fourier transform microwave ...
Ecaterina Burevschi, M. Eugenia Sanz
doaj   +1 more source

Toward Gas-Phase Thermometry Using Pure-Rotational Impulsive Stimulated Raman Scattering Spectroscopy with a Low-Energy Femtosecond Oscillator

Applied Sciences, 2022
Femtosecond coherent Raman techniques have significant diagnostic value for the sensitive and non-intrusive measurement of temperature, pressure, and composition of gas mixtures.
Mauro Falconieri, Davide Tedeschi, Serena Gagliardi, Flaminia Rondino, Michele Marrocco, Waruna D. Kulatilaka   +5 more
doaj   +1 more source

Zero kinetic energy-pulsed field ionization and resonance enhanced multiphoton ionization photoelectron spectroscopy: Ionization dynamics of Rydberg states in HBr [PDF]

, 1996
The results of rotationally resolved resonance enhanced multiphoton ionization photoelectron spectroscopy and zero kinetic energy‐pulsed field ionization studies on HBr via various rotational levels of the F^ 1Δ_2 and f^ 3Δ_2 Rydberg states are reported.
Buma, W. J., de Lange, C. A., Lefebvre-Brion, H., McKoy, V., Wales, N. P. L., Wang, Kwanghsi   +5 more
core   +2 more sources