Results 21 to 30 of about 3,012,302 (181)
Chiral rotational spectroscopy [PDF]
Physical Review A, 2016 We introduce chiral rotational spectroscopy: a new technique that enables the determination of the orientated optical activity pseudotensor components $B_{XX}$, $B_{YY}$ and $B_{ZZ}$ of chiral molecules, in a manner that reveals the enantiomeric constitution of a sample and provides an incisive signal even for a racemate. Chiral rotational spectroscopy
Cameron, Robert B. +2 more
openaire +6 more sources
Rotational Rest Frequencies and First Astronomical Search of Protonated Methylamine
Frontiers in Astronomy and Space Sciences, 2022 We report first laboratory rest frequencies for rotational transitions of protonated methylamine, CH3NH3+, measured in a cryogenic 22-pole ion trap machine and employing an action spectroscopy scheme.
Philipp C. Schmid +8 more
doaj +1 more source
Uniform supersonic flow sampling for detection by chirped-pulse rotational spectroscopy.
Journal of Chemical Physics, 2021 Chirped-pulse Fourier transform microwave (CP-FTMW) spectroscopy is a powerful near-universal detection method finding application in many areas. We have previously coupled it with supersonic flows (CPUF) to obtain product branching in reaction and ...
R. Gurusinghe +3 more
semanticscholar +1 more source
Molecules, 2022 Large amplitude motions (LAMs) form a fundamental phenomenon that demands the development of specific theoretical and Hamiltonian models. In recent years, along with the strong progress in instrumental techniques on high-resolution microwave spectroscopy
Ha Vinh Lam Nguyen +2 more
doaj +1 more source
A 220–300 GHz Twin-FET Detector for Rotational Spectroscopy of Gas Mixtures
IEEE Sensors Journal, 2021 In this paper, a twin-FET (field effect transistor) THz detector monolithically integrated with a dual-feed antenna is presented. The antenna-detector configuration can be extended for ’N’ FET elements to relax the input impedance requirement for the ...
M. Mansha +4 more
semanticscholar +1 more source
Molecular Identification with Rotational Spectroscopy and Probabilistic Deep Learning. [PDF]
Journal of Physical Chemistry A, 2020 A proof-of-concept framework for identifying molecules of unknown elemental composition and structure using experimental rotational data and probabilistic deep learning is presented.
M. McCarthy, K. L. Lee
semanticscholar +1 more source
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 +9 more
doaj +1 more source
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
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 +5 more
doaj +1 more source
Rotational spectroscopy of cold and trapped molecular ions in the Lamb–Dicke regime [PDF]
Nature Physics, 2018 Sympathetic cooling of trapped ions has been established as a powerful technique for the manipulation of non-laser-coolable ions1–4. For molecular ions, it promises vastly enhanced spectroscopic resolution and accuracy.
S. Alighanbari +3 more
semanticscholar +1 more source