This title appears in the Scientific Report :
2018
Please use the identifier:
http://dx.doi.org/10.1016/j.nme.2018.07.001 in citations.
Please use the identifier: http://hdl.handle.net/2128/19461 in citations.
Temperature-dependent in-situ LEIS measurement of W surface enrichment by 250 eV D sputtering of EUROFER
Temperature-dependent in-situ LEIS measurement of W surface enrichment by 250 eV D sputtering of EUROFER
Tungsten surface enrichment of EUROFER steel by 250 eV deuterium sputtering is in-situ measured using low energy He$^{+}$ ion scattering spectroscopy. The samples are irradiated at various temperatures between 300 K and 800 K with a deuterium atom flux of 2e18 m$^{-2}$s$^{-1}$ and maximum fluence up...
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Personal Name(s): | Koslowski, H. R. (Corresponding author) |
---|---|
Bhattacharyya, S. R. / Hansen, P. / Linsmeier, Ch. / Rasiński, M. / Ström, P. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Nuclear materials and energy, 16 (2018) S. 181 - 190 |
Imprint: |
Amsterdam [u.a.]
Elsevier
2018
|
DOI: |
10.1016/j.nme.2018.07.001 |
Document Type: |
Journal Article |
Research Program: |
Plasma-Wall-Interaction |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/19461 in citations.
Tungsten surface enrichment of EUROFER steel by 250 eV deuterium sputtering is in-situ measured using low energy He$^{+}$ ion scattering spectroscopy. The samples are irradiated at various temperatures between 300 K and 800 K with a deuterium atom flux of 2e18 m$^{-2}$s$^{-1}$ and maximum fluence up to 1.1e23 m$^{-2}$. The measurements at room temperature show a clear increase of tungsten surface density, but already at 520 K the observed enrichment is only half as large. At a temperature of 800 K no tungsten surface enrichment is detectable. The obtained data allows to determine an upper limit of 1.6 eV for the diffusion activation energy of tungsten in EUROFER. |