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000279574 1001_ $$0P:(DE-Juel1)145757$$aLemahieu, Nathan$$b0$$eCorresponding author
000279574 245__ $$aSynergistic Effects of ELMs and Steady State H and H/He Irradiation on Tungsten
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000279574 520__ $$aTo investigate synergistic effects of high heat flux loading on H and H/He loaded tungsten surfaces, specimens were exposed to a 30 keV steady-state H or H/He beam and subsequently loaded with an electron beam to simulate ELMs. The heat flux during the H and H/He loading was 10.5 MW m−2, while a 2 × 1025 m−2 fluence was reached. After exposure, all specimens exhibited an altered surface morphology. The H/He samples with a surface temperature of 1000 °C and 1500 °C had a multitude of surface extrusions. Afterwards the particle loaded samples were exposed to 100 ELM-like pulses around the material's damage threshold. Transient heat fluxes of 190 MW m−2 and 380 MW m−2 were applied at room temperature and 400 °C for a duration of 1 ms. Post-mortem analysis showed no deterioration of thermal shock resistance in comparison with polished material. For some tests the reference specimens roughened or cracked while the H or H/He exposed material had no damage. The H-content and the H/He-induced cavities and/or extrusions are suggested as two potential causes for this change in material behaviour.
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000279574 7001_ $$0P:(DE-HGF)0$$aGreuner, Henri$$b1
000279574 7001_ $$0P:(DE-Juel1)129747$$aLinke, Jochen$$b2
000279574 7001_ $$0P:(DE-HGF)0$$aMaier, Hans$$b3
000279574 7001_ $$0P:(DE-Juel1)129778$$aPintsuk, Gerald$$b4
000279574 7001_ $$0P:(DE-Juel1)130180$$aVan Oost, Guido$$b5
000279574 7001_ $$0P:(DE-Juel1)129811$$aWirtz, Marius$$b6
000279574 773__ $$0PERI:(DE-600)1492280-0$$a10.1016/j.fusengdes.2015.06.051$$gVol. 98-99, p. 2020 - 2024$$p2020 - 2024$$tFusion engineering and design$$v98-99$$x0920-3796$$y2015
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