Erlangen 2026 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 6: Plasma Wall Interaction I
P 6.2: Vortrag
Dienstag, 17. März 2026, 11:30–11:45, KH 01.020
Experimental Investigations Of Hydrogen Isotope Interaction In Laboratory Boron Coatings — •Eduard Warkentin1,2, Anne Houben1, Marcin Rasinski1, Sören Möller3, Hans Rudolf Koslowski1, Timo Dittmar1, Marc Sackers1, Arkadi Kreter1, Tom Wauters4, Bernhard Unterberg1,2, and Christian Linsmeier1,2 — 1Forschungszentrum Jülich GmbH, Institut of Fusion Energy and Nuclear Waste Managment - Plasmaphysics (IFN-1), Jülich 52425, Germany — 2Ruhr-Universität Bochum, Faculty of Physics and Astronomy, Bochum 44801, Germany — 3Forschungszentrum Jülich GmbH, Institute of Energy Materials and Devices, Materials Synthesis and Processing (IMD-2), 52425 Jülich, Germany — 4ITER Organization, Route de Vinon-sur-Verdon, CS 90 046 13067, St. Paul Lez Durance Cedex, France
Due to the change of the ITER first wall material from Be to W, oxygen and other impurities in the vessel are not sufficiently gettered by a W wall. A thin amorphous boron layer, which is applied via glow discharge boronization during the regular wall conditioning phase, can reintroduce impurity gettering and a more efficient plasma operation can be obtained. In order to investigate hydrogen retention and permeation of mixed boron coatings, B:D layers were fabricated by magnetron sputter deposition on W and steel substrates. After characterization, the gas driven deuterium permeation flux was measuered and the layer permeability was obtained. B:D coated samples were exposed to different deuterium plasma in order to investigate retention via nuclear reaction analysis and thermal desorption spectroscopy.
Keywords: Permeation; Hydrogen retention; Boron; Isotope exchange