Erosion yields of carbon under various plasma conditions in Pilot-PSI
Erosion yields of carbon under various plasma conditions in Pilot-PSI
Fine-grain graphite targets have been exposed to ITER divertor relevant plasmas in Pilot-PSI to address material migration issues in fusion devices. Optical emission spectroscopy and mass loss measurements have been employed to quantify gross chemical erosion and net erosion yields, respectively. Ef...
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Personal Name(s): | Bystrov, K. (Corresponding Author) |
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Westerhout, J. / Matveeva, Maria / Litnovsky, A. / Marot, L. / Zoethout, E. / Temmerman, G. De | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Journal of nuclear materials, 415 (2011) 1, S. S149 - S152 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2011
|
Physical Description: |
S149-S152 |
DOI: |
10.1016/j.jnucmat.2010.11.067 |
Conference: | 19th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), San Diego (USA), 2010-05-24 - 2010-05-28 |
Document Type: |
Contribution to a conference proceedings Journal Article |
Research Program: |
ohne Topic |
Publikationsportal JuSER |
Fine-grain graphite targets have been exposed to ITER divertor relevant plasmas in Pilot-PSI to address material migration issues in fusion devices. Optical emission spectroscopy and mass loss measurements have been employed to quantify gross chemical erosion and net erosion yields, respectively. Effects of the ion impact energy and target geometry on carbon erosion yields have been studied. It is concluded that temporal evolution of gross chemical erosion is strongly connected with changes in morphology of plasma-exposed surfaces. The net carbon erosion yield is increased when the targets are partly covered by insulating boron-nitride rings. |