The impact of surface morphology on the erosion of metallic surfaces – Modelling with the 3D Monte-Carlo code ERO2.0

A. Eksaeva, D. Borodin, J. Romazanov, A. Kirschner, A. Kreter, B.Göths, M. Rasinski, B. Unterberg, S. Brezinsek, Ch Linsmeier, E.Vassallo, M. Passoni, D. Dellasega, M. Sala, F. Romeo, I. Borodkina

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10 Scopus citations

Abstract

The roughness of metallic surfaces has a vital impact on the erosion of plasma-facing materials. Roughness determines the effective sputtering yield Yeff of the facing material. The angular/energy distribution of sputtered particles, and the spatial erosion and deposition distribution. The model for simulation the effect of the surface roughness was earlier implemented into the 3D Monte-Carlo code ERO2.0 and validated using results of ion beam experiments and experiments in the linear plasma device PSI-2. In the present study the developed ERO2.0 surface morphology model was applied to the JET-ILW tungsten (W) divertor consisting of smooth bulk W and W-coated CFC components. Influence of the surface roughness on the W erosion as well as on the transport of sputtered material in conditions of inclined magnetic field was investigated. Simulation results are in a good agreement with existing experimental findings.

Original languageEnglish
Article number100987
JournalNuclear Materials and Energy
Volume27
DOIs
StatePublished - Jun 2021
Externally publishedYes

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