Results 21 to 30 of about 1,079,430 (204)

A Review on BGK Models for Gas Mixtures of Mono and Polyatomic Molecules

open access: yesFluids, 2021
We consider the Bathnagar–Gross–Krook (BGK) model, an approximation of the Boltzmann equation, describing the time evolution of a single momoatomic rarefied gas and satisfying the same two main properties (conservation properties and entropy inequality).
Marlies Pirner
doaj   +1 more source

Ultracold collisions of polyatomic molecules: CaOH

open access: yesNew Journal of Physics, 2019
Ultracold collisions of the polyatomic species CaOH are considered, in internal states where the collisions should be dominated by long-range dipole–dipole interactions.
Lucie D Augustovičová, John L Bohn
doaj   +1 more source

Boosting Charge Storage in Ferri/Ferrocyanide‐Based Alkaline Redox Flow Batteries

open access: yesAngewandte Chemie, EarlyView.
By modifying the solvation environment, cation engineering through Li+ substitution of traditional K+ or Na+ boosts the alkaline solubility of the ferri/ferrocyanide catholyte redox couple, providing a viable pathway to overcome the long‐standing challenge of energy density limitations for aqueous redox flow batteries (RBFs).
Mahla Sarfaraz Khabbaz   +6 more
wiley   +2 more sources

Measuring Fundamental Symmetry Violation in Polyatomic Molecules [PDF]

open access: yes, 2023
Open questions in fundamental physics, such as the cosmological origins of the observed imbalance of matter and antimatter, motivate the search for fundamental symmetry violating physics beyond the Standard Model (BSM).
Jadbabaie, Arian
core   +1 more source

Borosulfates Hosting Se42+ Ions—Crystal Structures, Chemical Bonding, Optical Spectroscopy, and Magnetism

open access: yesAngewandte Chemie, EarlyView.
Apart from (transition) metal (oxo)halides only few hosts stabilize chalcogenide cations in purely oxoanionic coordination environment. Herein, we report on five borosulfates containing the Se42+ ion and characterize the compounds using X‐ray diffraction, diffuse reflectance spectroscopy, density functional theory (DFT) calculations along with magnetic
Erich Turgunbajew   +11 more
wiley   +2 more sources

Rotational Cooling of Trapped Polyatomic Molecules [PDF]

open access: yesPhysical Review Letters, 2015
Controlling the internal degrees of freedom is a key challenge for applications of cold and ultracold molecules. Here, we demonstrate rotational-state cooling of trapped methyl fluoride molecules (CH3F) by optically pumping the population of 16 M-sublevels in the rotational states J=3,4,5, and 6 into a single level.
Glöckner, R.   +4 more
openaire   +4 more sources

High-order harmonic generation by polyatomic molecules [PDF]

open access: yes, 2017
We present a theory of high-order harmonic generation by arbitrary polyatomic molecules based on the molecular strong-field approximation (MSFA) in the framework of the S-matrix theory.
Milošević, D.B.   +2 more
core   +1 more source

Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function

open access: yes, 1986
This paper is aimed at establishing a statistical theory of rotational and vibrational excitation of polyatomic molecules by an intense IR laser. Starting from the Wigner function of quantum statistical mechanics, we treat the rotational motion in the ...
XIE, BM (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING,PEOPLES R CHINA.   +2 more
core   +2 more sources

Large molasses-like cooling forces for molecules using polychromatic optical fields: A theoretical description

open access: yesPhysical Review Research, 2020
Recent theoretical investigations have indicated that rapid optical cycling should be feasible in complex polyatomic molecules with diverse constituents, geometries, and symmetries.
Konrad Wenz   +4 more
doaj   +1 more source

Rotational state detection of electrically trapped polyatomic molecules

open access: yesNew Journal of Physics, 2015
Detecting the internal state of polar molecules is a substantial challenge when standard techniques such as resonance-enhanced multiphoton ionization or laser-induced fluorescense do not work.
Rosa Glöckner   +3 more
doaj   +1 more source

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