✍ Scribed by Vida Žigman
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The study presents a contribution to the modelling of processes with H 2 molecules in both ground and vibrationally excited state and with H atoms. Attention is focused on the surface processes, which besides volume collisions, can influence significantly the vibrational population of hydrogen molecules. It is important to know this population since it opens a variety of low-energy channels at the cold edge of fusion plasmas. We have developed a simple kinetic model to estimate the particle fluxes formed by vibrational excitation and dissociation of hydrogen on metal surfaces, at low pressures and low temperatures. Comparison with the experiment shows that it grasps the main of the underlying physics: further improvements accompanied by more complete vibrational state-selective data are foreseen.
📜 SIMILAR VOLUMES
The influence of surface reconstruction on the kinetics of adsorption-desorption processes is studied through a simple two-position model by means of Monte Carlo simulation. Effects due to constraints on the translational motion of activated complexes and to heterogeneity are particularly investigat