scholarly journals Mesoscale Erosion of Tungsten Surface due to Low-Energy High-Flux Helium/Deuterium Plasma Irradiation

2005 ◽  
Vol 81 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Shuichi TAKAMURA
Keyword(s):  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma ◽  
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.

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

Nanostructure evolution and surface modification of tungsten exposed to low energy, high flux deuterium plasma

2017 ◽  
Vol 125 ◽  
pp. 473-478 ◽  
Author(s):  
Wangguo Guo ◽  
Long Cheng ◽  
Jun Wang ◽  
Qingwei Fu ◽  
Shaoyang Qin ◽  
...  
Keyword(s):  
Surface Modification ◽  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma

Deuterium occupation of vacancy-type defects in argon-damaged tungsten exposed to high flux and low energy deuterium plasma

2016 ◽  
Vol 56 (3) ◽  
pp. 036010 ◽  
Author(s):  
Xiu-Li Zhu ◽  
Ying Zhang ◽  
Long Cheng ◽  
Yue Yuan ◽  
Gregory De Temmerman ◽  
...  
Keyword(s):  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma

Blistering on tungsten surface exposed to high flux deuterium plasma

2016 ◽  
Vol 471 ◽  
pp. 51-58 ◽  
Author(s):  
H.Y. Xu ◽  
W. Liu ◽  
G.N. Luo ◽  
Y. Yuan ◽  
Y.Z. Jia ◽  
...  
Keyword(s):  
High Flux ◽  
Deuterium Plasma ◽  
Tungsten Surface

Subsurface deuterium bubble formation in W due to low-energy high flux deuterium plasma exposure

2016 ◽  
Vol 57 (3) ◽  
pp. 034003 ◽  
Author(s):  
Y.Z. Jia ◽  
W. Liu ◽  
B. Xu ◽  
S.L. Qu ◽  
L.Q. Shi ◽  
...  
Keyword(s):  
Bubble Formation ◽  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma ◽  
Plasma Exposure
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