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Electron-hole excitations reduce hot hydrogen atom lifetime on tungsten

Paper Authors:

Oihana Galparsoro,

Rémi Pétuya,

Fabio Busnengo,

Joseba Iñaki Juaristi,

Cédric Crespos,

Maite Alducin,

Pascal Larregaray

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Key Details

Non-adiabatic e-h excitations reduce hot H atom lifetime on W(110)

Greatly affects hot atom H2 recombination at low coverage

Less influence at high coverage due to H atom screening

Predicts H supersaturation of W(110) surface at 1 ML coverage

Conceptual cover art depicts e-h excitation reducing H atom lifetime

AI generated summary

Electron-hole excitations reduce hot hydrogen atom lifetime on tungsten

This study uses simulations to show that including non-adiabatic electronic excitations significantly reduces the lifetime of energetic (hot) hydrogen atoms scattering on a tungsten surface at low coverage. This affects the hot atom recombination mechanism thought to drive hydrogen molecule formation on metals.

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