Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load

Hamaji, Y.; Sagara, A.; Möller, Sören; Tokitani, M.; Ueda, Y.; Masuzaki, S.; Ibano, K.; Kreter, A.; Oya, M.; Sakamoto, R.; Lee, H. T.; Rasinski, M.

doi:10.1016/j.nme.2016.11.003

Journal Article

FZJ-2017-07927

Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load

Hamaji, Y. (Corresponding author) ; Lee, H. T. ; Kreter, A.FZJ* ; Rasinski, M.FZJ* ; Tokitani, M. ; Masuzaki, S. ; Sagara, A. ; Oya, M. ; Ibano, K. ; Sakamoto, R. ; Ueda, Y. ; Möller, S.FZJ*

2017
Elsevier Amsterdam [u.a.]

Nuclear materials and energy 12, 1303 - 1307 (2017) [10.1016/j.nme.2016.11.003]

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Please use a persistent id in citations: http://hdl.handle.net/2128/16054 doi:10.1016/j.nme.2016.11.003

Abstract: Surface morphology and hydrogen isotope retention of W specimen melted with vertical displacement event-like heat load and subsequent deuterium (D) plasma exposure were studied. Applied heat loads using electron beam without raster scanning were about 190 and 230 MW/m2 in heat flux and 0.08, 0.12 and 0.16 s in duration. After the heat load application, specimens showed apparent melting spots with grain growth or dense micrometer scale convex structure. Cracks were observed only in the part with the convex structure. D retention in the melted part of specimens was not significantly larger than in the reference specimen despite large changes of surface characteristics.

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