تقرير
Helium load on W-O coatings grown by pulsed laser deposition
| العنوان: | Helium load on W-O coatings grown by pulsed laser deposition |
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| المؤلفون: | Mateus, R., Dellasega, D., Passoni, M., Siketić, Z., Radović, I. Bogdanović, Hakola, A., Alves, E. |
| المصدر: | Surface and Coatings Technology,Volume 355,2018,Pages 215-221 |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Applied Physics, Condensed Matter - Materials Science |
| الوصف: | W-O deposits with complex morphologies and significant He contents will growth on the surface of plasma facing components exposed to He discharges. To mimic the re/co-deposition process, W-O-He coatings were produced by implanting He+ ions on W films grown by pulsed laser deposition (PLD). The use of appropriate PLD experimental parameters such as Ar or He background atmospheres induces the deposition of porous or amorphous-like W-O structures, respectively. After multiple ion implantation stages using 150 keV, 100 keV and 50 keV incident He+ ion beams with a total fluence of 5 x 1017 ion/cm^2, significant amounts of He were identified in porous coatings by Rutherford backscattering (RBS). Time-of-flight elastic recoil detection (TOF-ERDA) measurements showed that most of the implanted He was already released from the porous coatings five month after implantation while for the case of amorphous ones the He content remains significant at deeper layers and smoothly decrease towards the surface, as result of a different morphology and nanostructure. The proposed method involving PLD and ion implantation seems adequate to produce W-O-He reference samples for fusion investigations. Comment: This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement n. 633053 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.surfcoat.2018.02.089 |
| الوصول الحر: | http://arxiv.org/abs/1812.05714Test |
| رقم الانضمام: | edsarx.1812.05714 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.surfcoat.2018.02.089 |
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