Deuterium retention and surface morphology modification in oxidized tungsten exposed to D plasma

2021 ◽  
Author(s):  
S.A. Puyang ◽  
Y.M. Lyu ◽  
F.F. Nian ◽  
Y.P. Xu ◽  
Z.S. Yang ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Morphology Modification ◽  
Deuterium Retention ◽  
Surface Morphology Modification

scholarly journals Fluence Dependence of Surface Morphology and Deuterium Retention in W Bulks and Nanocrystalline W Films Exposed to Deuterium Plasma

2021 ◽  
Vol 11 (4) ◽  
pp. 1619
Author(s):  
Jing Yan ◽  
Xia Li ◽  
Kaigui Zhu
Keyword(s):  
Surface Morphology ◽  
Thermal Desorption Spectroscopy ◽  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma ◽  
Vacancy Clusters ◽  
Plasma Irradiation ◽  
Deuterium Retention ◽  
Fluence Dependence ◽  
Scanning Electron

The surface morphology of pure W bulks and nanocrystalline tungsten films was investigated after exposure to a low-energy (100 eV/D), high-flux (1.8 × 1021 D·m−2s−1) deuterium plasma. Nanocrystalline tungsten films of 6 μm thickness were deposited on tungsten bulks and exposed to deuterium plasma at various fluences ranging from 1.30 × 1025 to 5.18 × 1025 D·m−2. Changes in surface morphology from before to after irradiation were studied with scanning electron microscopy (SEM). The W bulk exposed to low-fluence plasma (1.30 × 1025 D·m−2) shows blisters. The blisters on the W bulk irradiated to higher-fluence plasma are much larger (~2 µm). The blisters on the surface of W films are smaller in size and lower in density than those of the W bulks. In addition, the modifications exhibit the appearance of cracks below the surface after deuterium plasma irradiation. It is suggested that the blisters are caused by the diffusion and aggregation of the deuterium-vacancy clusters. The deuterium retention of the W bulks and nanocrystalline tungsten films was studied using thermal desorption spectroscopy (TDS). The retention of deuterium in W bulks and W films increases with increasing deuterium plasma fluence when irradiated at 500 K.

scholarly journals Surface morphology and deuterium retention in tungsten and tungsten–rhenium alloy exposed to low-energy, high flux D plasma

2014 ◽  
Vol 454 (1-3) ◽  
pp. 136-141 ◽  
Author(s):  
V.Kh. Alimov ◽  
Y. Hatano ◽  
K. Sugiyama ◽  
M. Balden ◽  
M. Oyaidzu ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Low Energy ◽  
High Flux ◽  
Deuterium Retention ◽  
Rhenium Alloy ◽  
And Tungsten

Behavior of deuterium retention and surface morphology for VPS–W/F82H

2013 ◽  
Vol 442 (1-3) ◽  
pp. S242-S245 ◽  
Author(s):  
Yasuhisa Oya ◽  
Masashi Shimada ◽  
Tomonori Tokunaga ◽  
Hideo Watanabe ◽  
Naoaki Yoshida ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Deuterium Retention

Effect of neon plasma pre-irradiation on surface morphology and deuterium retention of tungsten

2015 ◽  
Vol 463 ◽  
pp. 1025-1028 ◽  
Author(s):  
L. Cheng ◽  
G. De Temmerman ◽  
P.A. Zeijlmans van Emmichoven ◽  
G. Ji ◽  
H.B. Zhou ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Deuterium Retention

scholarly journals Surface morphology and deuterium retention of tungsten after low- and high-flux deuterium plasma exposure

2014 ◽  
Vol 54 (8) ◽  
pp. 083014 ◽  
Author(s):  
M.H.J. 't Hoen ◽  
M. Balden ◽  
A. Manhard ◽  
M. Mayer ◽  
S. Elgeti ◽  
...  
Keyword(s):  
Surface Morphology ◽  
High Flux ◽  
Deuterium Plasma ◽  
Plasma Exposure ◽  
Deuterium Retention

scholarly journals Temperature dependence of surface morphology and deuterium retention in polycrystalline ITER-grade tungsten exposed to low-energy, high-flux D plasma

2012 ◽  
Vol 420 (1-3) ◽  
pp. 519-524 ◽  
Author(s):  
V.Kh. Alimov ◽  
B. Tyburska-Püschel ◽  
S. Lindig ◽  
Y. Hatano ◽  
M. Balden ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Temperature Dependence ◽  
Low Energy ◽  
High Flux ◽  
Deuterium Retention
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