Interactions Of Fast Ions With Supported Graphene: Quantum Hydrodynamic Model

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We use a quantum hydrodynamic (QHD) model to describe the high-frequency plasmon excitations of the carbon valence electrons responding to fast ions which move parallel to a single sheet of graphene supported by an insulating substrate. We calculate the stopping and the image forces on ions. Numerical results are obtained showing the effects of variation in size of the gap between graphene and the SiO2 substrate, as well as the effects of a finite frictional coefficient, on these quantities.

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