Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 106: Electronic Structure of Surfaces: Spectroscopy, Surface States III
O 106.7: Vortrag
Freitag, 24. März 2017, 12:00–12:15, WIL C107
ERO modelling of surface morphology effect on metals erosion at PSI-2 facility — •Alina Eksaeva1,2, Evgeny Marenkov2, Dmitry Borodin1, Arkadi Kreter1, Daisuke Nishijima3, Andreas Kirschner1, Tobias Schlummer1, Juri Romazanov1, Albrecht Pospieszczyk1, and Stephan Ertmer1 — 1Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, 52425 Jülich, Germany — 2National Research Nuclear University MEPhI, 31, Kashirskoe sh., 115409, Moscow, Russia — 3Center for Energy Research, University of California at San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0417, USA
Linear plasma device PSI-2 with its continuous plasma operation is an excellent test bed for the investigation of plasma-facing material erosion including delicate effects like e.g. nano- and micro-scale surface structures and roughness. However, numerical modelling is indispensable for the correct interpretation of experiments. The 3D Monte-Carlo code ERO is a powerful and versatile tool for describing the erosion and local transport of impurities taking into account the particular geometry. The aim of this work is to incorporate the effect of surface morphology into the ERO modelling first based on free parameters matched with the experiments. Several experiments have already been carried out in PSI-2 facility to investigate the evolving surface morphology of tungsten (W) and chromium (Cr) and provide a consistent set of data for the interpretation with the ERO code. Generally, ERO simulation results are in a good agreement with the experiments.