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000808662 1001_ $$0P:(DE-HGF)0$$aLemahieu, N.$$b0$$eCorresponding author
000808662 245__ $$aThermal Shock Behaviour of H and H/He-Exposed Tungsten at High Temperature
000808662 260__ $$aBristol$$bIoP Publ.$$c2016
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000808662 520__ $$aPolycrystalline tungsten samples were characterized and exposed to a pure H beam or mixed H/He beam containing 6% He in GLADIS at a surface temperature of 600 °C, 1000 °C, or 1500 °C. After 5400 s of exposure time with a heat flux of 10.5 MW m−2, the total accumulated fluence of 2 × 1025 m−2 was reached. Thereafter, edge localized mode (ELM)-like thermal shocks with a duration of 1 ms and an absorbed power density of 190 MW m−2 and 380 MW m−2 were applied on the samples in JUDITH 1. During the thermal shocks, the base temperature was kept at 1000 °C. The ELM-experiments with the lowest transient power density did not result in any detected damage. The other tests showed the beginning of crack formation for every sample, except the sample pre-exposed with the pure H-beam at 1500 °C in GLADIS. This sample was roughened, but did not show any crack initiation. With exception to the roughened sample, the category of ELM-induced damage for the pre-exposed samples is identical to the reference tests without pre-exposure to a particle flux.
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000808662 7001_ $$0P:(DE-HGF)0$$aGreuner, H.$$b1
000808662 7001_ $$0P:(DE-Juel1)129747$$aLinke, Jochen$$b2
000808662 7001_ $$0P:(DE-HGF)0$$aMaier, H.$$b3
000808662 7001_ $$0P:(DE-Juel1)129778$$aPintsuk, Gerald$$b4
000808662 7001_ $$0P:(DE-Juel1)129811$$aWirtz, Marius$$b5
000808662 7001_ $$0P:(DE-Juel1)130180$$aVan Oost, Guido$$b6
000808662 7001_ $$0P:(DE-HGF)0$$aNoterdaeme, J.-M.$$b7
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