Publication

Femtosecond dynamics of electronic 'bubbles' in solid argon: viewing the inertial response and the bath coherences

Majed Chergui
2000
Journal Articles

Abstract

The dynamics of non-polar electronic solvation has been studied on a model system consisting of NO-doped solid Ar. Excitation of the lowest Rydberg state A(3ss) of NO leads to formation of an electronic 'bubble', which has been studied by femtosecond pump-probe spectroscopy and classical Mol. Dynamics simulations. The early time behavior of the transients is identified as the inertial component of the medium response. This first response is followed by a recurrent low-frequency oscillatory motion of the cage for up to .apprx.2 ps, indicative of coherence in the bath modes. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/fb425d94-2413-4803-bfd6-9e9b6b09eadc

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Majed Chergui
2000
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fb425d94-2413-4803-bfd6-9e9b6b09eadc

About this result

Related concepts (32)

Molecular dynamics

Molecular dynamics (MD) is a computer simulation method for analyzing the physical movements of atoms and molecules. The atoms and molecules are allowed to interact for a fixed period of time, giving a view of the dynamic "evolution" of the system. In the most common version, the trajectories of atoms and molecules are determined by numerically solving Newton's equations of motion for a system of interacting particles, where forces between the particles and their potential energies are often calculated using interatomic potentials or molecular mechanical force fields.

Femtochemistry

Femtochemistry is the area of physical chemistry that studies chemical reactions on extremely short timescales (approximately 10−15 seconds or one femtosecond, hence the name) in order to study the very act of atoms within molecules (reactants) rearranging themselves to form new molecules (products). In a 1988 issue of the journal Science, Ahmed Hassan Zewail published an article using this term for the first time, stating "Real-time femtochemistry, that is, chemistry on the femtosecond timescale...".

Rydberg constant

In spectroscopy, the Rydberg constant, symbol for heavy atoms or for hydrogen, named after the Swedish physicist Johannes Rydberg, is a physical constant relating to the electromagnetic spectra of an atom. The constant first arose as an empirical fitting parameter in the Rydberg formula for the hydrogen spectral series, but Niels Bohr later showed that its value could be calculated from more fundamental constants according to his model of the atom.

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Femtosecond dynamics of electronic 'bubbles' in solid argon: viewing the inertial response and the bath coherences

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