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Suppression of deuterium-induced blistering in pre-damaged tungsten exposed to short-duration deuterium plasma
- Source :
- Journal of Nuclear Materials. 500:295-300
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Effects of pre-damage by 500 keV argon ion implantation on deuterium-induced blistering in tungsten has been investigated. After low-energy (40 eV) and high-flux (∼1024 D/m2s) deuterium plasma exposure with short exposure duration (100 s), a large increase of deuterium retention is found in the pre-damaged tungsten, while surface blistering is significantly suppressed as compared to the un-damaged one. According to elastic recoil detection analysis, a local deuterium concentration peak is observed at a depth of ∼100 nm for the un-damaged tungsten, which is supposed to be related to the surface blistering with nanometer size. Comparison of deuterium retention in the near surface (within 300 nm) and in the bulk suggests that deuterium inward diffusion is more significant in the pre-damaged tungsten. It is speculated that the creation of deuterium trap-sites and enhancement of deuterium inward diffusion give rise to an increase of critical deuterium concentration for blistering and contribute to the suppressed deuterium-induced blistering on pre-damaged tungsten under the present exposure conditions.
- Subjects :
- inorganic chemicals
Nuclear and High Energy Physics
Argon
Materials science
Diffusion
technology, industry, and agriculture
Analytical chemistry
chemistry.chemical_element
Tungsten
equipment and supplies
01 natural sciences
Deuterium plasma
010305 fluids & plasmas
Elastic recoil detection
Ion implantation
Nuclear Energy and Engineering
Deuterium
chemistry
0103 physical sciences
lipids (amino acids, peptides, and proteins)
General Materials Science
010306 general physics
Short duration
Subjects
Details
- ISSN :
- 00223115
- Volume :
- 500
- Database :
- OpenAIRE
- Journal :
- Journal of Nuclear Materials
- Accession number :
- edsair.doi...........ef7430b8a36312b42cb29eed9339ba1f