ELM-induced melting: assessment of shallow melt layer damage and the power handling capability of tungsten in a linear plasma device

Morgan, T.W.; Eden, G.G. van; Kruif, T M de; Berg, M.A. van den; Matějíček, Jiří; Chráska, Tomáš; Temmerman, G. De

doi:10.1088/0031-8949/2014/t159/014022

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The material reaction to the loading is related to basic properties such as strength, hardness, the thermal conductivity, the thermal expansion and the melting point. The melting conditions for tungsten have been widely studied [3][4][5][6]. Thus, it is known that ELM-like cycling causes roughening and surface cracking even if the pulse energy is well below the melting threshold.…”

Section: Introductionmentioning

confidence: 99%

Heat load and deuterium plasma effects on SPS and WSP tungsten

et al. 2015

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Abstract. Tungsten is a prime choice for armor material in future nuclear fusion devices. For the realization of fusion, it is necessary to address issues related to the plasma-armor interactions. In this work, several types of tungsten material were studied, i.e. tungsten prepared by spark plasma sintering (SPS) and by water stabilized plasma spraying (WSP) technique. An intended surface porosity was created in the samples to model hydrogen/ helium bubbles. The samples were subjected to a laser heat loading and a radiation loading of deuterium plasma to simulate edge plasma conditions of a nuclear fusion device (power density of 10 8 W/cm 2 and 10 7 W/cm 2 , respectively, in the pulse intervals up to 200 ns). Thermally induced changes in the morphology and the damage to the studied surfaces are described. Possible consequences for the fusion device operation are pointed out.

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Section: Introductionmentioning

confidence: 99%

Heat load and deuterium plasma effects on SPS and WSP tungsten

et al. 2015

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Dust and powder in fusion plasmas: recent developments in theory, modeling, and experiments

Ratynskaia

Bortolon

Krasheninnikov

2022

Rev. Mod. Plasma Phys.

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In this paper, we present a brief historic overview of the research on dust in fusion devices with carbon plasma-facing components and then highlight the most recent developments in the post-carbon era of the field. In particular, we consider how the metallic dust form, mobilize, and interact with fusion plasmas and plasma facing components. Achievements in wall conditioning and associated anomalous plasma transport modification, including ELM suppression, with the powder injection technique is another focus of the paper. Capabilities of the state-of-art simulation tools to describe different aspects of dust in fusion devices are exemplified and new directions for future dust studies are brought forward.

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ELM-induced melting: assessment of shallow melt layer damage and the power handling capability of tungsten in a linear plasma device

Cited by 2 publications

References 7 publications

Heat load and deuterium plasma effects on SPS and WSP tungsten

Heat load and deuterium plasma effects on SPS and WSP tungsten

Dust and powder in fusion plasmas: recent developments in theory, modeling, and experiments

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