|Title||Surface damage of W exposed to combined stationary D plasma and ELMs-like pulsed plasma|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Y.Z Jia, W. Liu, B. Xu, S.L Qu, T.W Morgan|
|Journal||Journal of Nuclear Materials|
The surface damage of W under D plasma and ELMs-like transient heat loads was studied by combined stationary and pulsed D plasma. Low-flux transient heat loads will promote blister formation due to the gas expansion inside the blisters. On the contrary, high-flux transient heat loads will mitigate blistering due to the high surface temperature. Therefore, blistering on W surface first increased and then decreased with the increasing transient heat loads. The promotion effect of pulsed plasma on blistering is more obvious on  and  surfaces than on  surface, and the orientation dependence of blisters was mitigated by the transient heat loads. Surface modification induced by transient heat loads only formed on  and  surfaces, but did not form on  surface. The orientation dependence of surface modification was mainly due to the slipping system of dislocations.
|Alternate Title||J. Nucl. Mater.|
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