Blister formation on tungsten surface under low energy and high flux hydrogen plasma irradiation in NAGDIS-I

2003 ◽  
Vol 313-316 ◽  
pp. 72-76 ◽  
Author(s):  
M.Y. Ye ◽  
H. Kanehara ◽  
S. Fukuta ◽  
N. Ohno ◽  
S. Takamura
Keyword(s):  
Hydrogen Plasma ◽  
Low Energy ◽  
High Flux ◽  
Blister Formation ◽  
Plasma Irradiation ◽  
Tungsten Surface

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 Irradiation hardening induced by blistering in tungsten due to low-energy high flux hydrogen plasma exposure

2019 ◽  
Vol 522 ◽  
pp. 11-18 ◽  
Author(s):  
W.Q. Chen ◽  
X.Z. Xiao ◽  
B. Pang ◽  
S.S. Si ◽  
Y.Z. Jia ◽  
...  
Keyword(s):  
Hydrogen Plasma ◽  
Low Energy ◽  
High Flux ◽  
Plasma Exposure ◽  
Irradiation Hardening

The influence of impurities on the erosion of tungsten by low energy high flux deuterium plasma irradiation

2021 ◽  
pp. 153168
Author(s):  
Hanjun Tu ◽  
Shiwei Wang ◽  
Liangcheng Cui ◽  
Long Cheng ◽  
Guang-Hong Lu ◽  
...  
Keyword(s):  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma ◽  
Plasma Irradiation ◽  
Influence Of Impurities

Blister formation and deuterium retention on tungsten exposed to low energy and high flux deuterium plasma

2005 ◽  
Vol 337-339 ◽  
pp. 887-891 ◽  
Author(s):  
K. Tokunaga ◽  
M.J. Baldwin ◽  
R.P. Doerner ◽  
N. Noda ◽  
Y. Kubota ◽  
...  
Keyword(s):  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma ◽  
Blister Formation ◽  
Deuterium Retention
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