Results 21 to 30 of about 5,819 (230)

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

Scattering kernel for polyatomic molecules [PDF]

open access: yes, 2005
A polyatomic scattering kernel phenomenologically presented in a previous article is derived from an integral operator formulation. The five parameters involved in the scattering kernel expression are shown to be equal to the accommodation coefficients ...
Dadzie, Kokou Sename Enyonam; id_orcid   +6 more
core   +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

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

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

Vibrational Relaxation Dynamics of Polyatomic Molecules in Solution

open access: yesCHIMIA, 2003
Ultrafast time-resolved fluorescence measurements have been carried out to investigate vibrational relaxation dynamics of perylene derivatives in solution. The early results obtained with cyanoperylene in acetonitrile are presented and discussed.
Anatolio Pigliucci, Eric Vauthey
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

Probing multiphoton light-induced molecular potentials

open access: yesNature Communications, 2020
Conical intersections, a hallmark of polyatomic molecules, can be induced with light, leading to new reaction pathways. Here, the authors show that intense fields can create complex, beyond-conical intersections even in diatomics, resulting in an ...
M. Kübel   +9 more
doaj   +1 more source

A brief introduction to molecular orbital theory of simple polyatomic molecules for undergraduate chemistry students

open access: yesQuímica Nova, 2012
A simple, four-step method for better introducing undergraduate students to the fundamentals of molecular orbital (MO) theory of the polyatomic molecules H2O, NH3, BH3 and SiH4 using group theory is reported.
Ione M. Baibich, Ian S. Butler
doaj   +1 more source

A Fifth-order Multi-perturbation Derivation of the Energy Coefficients of Polyatomic Molecules [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1996
A multiperturbation theory has been developed for molecular systems. In the present paper we extend this theory to fifth order in the energy. The "bare-nucleus" hydrogenic function is chosen as the zero-order wave function rather than the more customary ...
Moh'd Abu-Jafar   +2 more
doaj   +1 more source

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