Physics – Chemical Physics
Scientific paper
2009-11-10
Phys. Rev. Lett. 103, 238301 (2009)
Physics
Chemical Physics
Scientific paper
10.1103/PhysRevLett.103.238301
A wide range of experiments have established that certain chemical reactions at metal surfaces can be driven by multiple hot electron mediated excitations of adsorbates. A high transient density of hot electrons is obtained by means of femtosecond laser pulses and a characteristic feature of such experiments is the emergence of a power law dependence of the reaction yield on the laser fluence $Y\sim F^n$. We propose a model of multiple inelastic scattering by hot electrons, which reproduces this power law and the experimentally found exponents of several experiments. All parameters are calculated within Density Functional Theory and the Delta Self-Consistent Field method. With a simplified assumption, the power law becomes exact and we obtain a simple and very useful physical interpretation of the exponent $n$, which represents the number of adsorbate vibrational states participating in the reaction.
Olsen Thomas
Schiøtz Jakob
No associations
LandOfFree
Origin of power laws for reactions at metal surfaces mediated by hot electrons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Origin of power laws for reactions at metal surfaces mediated by hot electrons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origin of power laws for reactions at metal surfaces mediated by hot electrons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-51167