The effect of high-flux H plasma exposure with simultaneous transient heat loads on tungsten surface damage and power handling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F14%3A00439649" target="_blank" >RIV/61389021:_____/14:00439649 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0029-5515/54/12/123010" target="_blank" >http://dx.doi.org/10.1088/0029-5515/54/12/123010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0029-5515/54/12/123010" target="_blank" >10.1088/0029-5515/54/12/123010</a>

Result language

angličtina

Original language name

The effect of high-flux H plasma exposure with simultaneous transient heat loads on tungsten surface damage and power handling

Original language description

The performance of the full-W ITER divertor may be significantly affected by the interplay between steady-state plasma exposure and transient events. To address this issue, the effect of a high-flux H plasma on the thermal shock response of W to ELM-liketransients has been investigated. Transient heating of W targets is performed by means of a high-power Nd:YAG laser with simultaneous exposure to H plasma in the linear device Magnum-PSI. The effects of simultaneous exposure to laser and plasma have been compared to those sequentially and to laser only. Transient melting is found to be aggravated during plasma exposure and to occur at lower heat flux parameters. Roughness and grain growth are observed to be driven by peak temperature, rather than by the loading conditions. The temperature evolution of the W surface under a series of transients is recorded by fast infrared thermography. By accounting for changes in the reflectivity at the damaged surface as measured by ellipsometry

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

<a href="/en/project/GA14-12837S" target="_blank" >GA14-12837S: Interaction of hydrogen isotopes with candidate fusion materials</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Fusion

ISSN

0029-5515

e-ISSN

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Volume of the periodical

54

Issue of the periodical within the volume

12

Country of publishing house

AT - AUSTRIA

Number of pages

11

Pages from-to

123010-123010

UT code for WoS article

000345579800016

EID of the result in the Scopus database

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