Publication

Dynamics of Electronic "Bubble" Formation in Solid Hydrogen: A Classical Model Calculation based on Fluid Dynamics

Majed Chergui
1999
Journal Articles

Abstract

A model based on fluid dynamics is proposed, which describes the dynamics of a photoinduced spherical deformation in solid hydrogen. The dynamics is driven by femtosecond excitation of the lowest A(3ss) Rydberg state of NO trapped in an H2 crystal, leading to electronic "bubble" formation. The model is based on a continuum approxn. and considers the medium as incompressible. Energy dissipation due to friction is also taken into account. The model provides quant. agreement with exptl. data, suggesting that solid H2 can be described as a liq. on ultrashort time scales. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/99dec720-8e5a-4314-972f-922bf3de6066

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Majed Chergui
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/99dec720-8e5a-4314-972f-922bf3de6066

About this result

Related concepts (32)

Hydrogen

Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula . It is colorless, odorless, tasteless, non-toxic, and highly combustible. Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all normal matter. Stars such as the Sun are mainly composed of hydrogen in the plasma state. Most of the hydrogen on Earth exists in molecular forms such as water and organic compounds.

Fluid dynamics

In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids—liquids and gases. It has several subdisciplines, including aerodynamics (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion). Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft, determining the mass flow rate of petroleum through pipelines, predicting weather patterns, understanding nebulae in interstellar space and modelling fission weapon detonation.

Hydrogen bond

In chemistry, a hydrogen bond (or H-bond) is a primarily electrostatic force of attraction between a hydrogen (H) atom which is covalently bound to a more electronegative "donor" atom or group (Dn), and another electronegative atom bearing a lone pair of electrons—the hydrogen bond acceptor (Ac). Such an interacting system is generally denoted , where the solid line denotes a polar covalent bond, and the dotted or dashed line indicates the hydrogen bond.

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Dynamics of Electronic "Bubble" Formation in Solid Hydrogen: A Classical Model Calculation based on Fluid Dynamics

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