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LIBS analysis of tungsten coatings exposed to Magnum PSI ELM-like plasma
- Source :
- Journal of Nuclear Materials, Piip, K, De Temmerman, G, van der Meiden, H J, Lissovski, A, Karhunen, J, Aints, M, Hakola, A, Paris, P, Laan, M, Likonen, J, Jogi, I, Kozlova, J & Mändar, H 2015, ' LIBS analysis of tungsten coatings exposed to Magnum PSI ELM-like plasma ', Journal of Nuclear Materials, vol. 463, pp. 919-922 . https://doi.org/10.1016/j.jnucmat.2014.11.017
- Publication Year :
- 2015
- Publisher :
- Elsevier, 2015.
-
Abstract
- The aim of this work was to study the applicability of laser induced breakdown spectroscopy (LIBS) as an in situ method for monitoring plasma facing materials in fusion reactors. Tungsten coated samples were exposed to Magnum PSI plasma using two different regimes: the steady-state (the sequence of approximately 11 s pulses) and the ELM-like. Right after the plasma exposure samples were tested with LIBS in the Magnum PSI analyses and target exchange chamber. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the surface morphology and crystallinity. These methods showed that changes at the sample surface caused by used ELM-like mode did not differ remarkably from those caused by steady-state mode. Surface temperature had significant effect on the surface structure. In addition post mortem LIBS measurements were performed that gave result similar to that of in situ LIBS.
- Subjects :
- In situ
Nuclear and High Energy Physics
fusion
retention
Materials science
ta214
LIBS
ta114
Scanning electron microscope
ta221
Analytical chemistry
chemistry.chemical_element
Plasma
Tungsten
Fusion power
deposition
Crystallinity
Nuclear Energy and Engineering
chemistry
General Materials Science
Laser-induced breakdown spectroscopy
Deposition (law)
ta218
Subjects
Details
- Language :
- English
- ISSN :
- 18734820 and 00223115
- Volume :
- 463
- Database :
- OpenAIRE
- Journal :
- Journal of Nuclear Materials
- Accession number :
- edsair.doi.dedup.....48c3231acac2dcf237d13bba470be68a