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Publikováno v:
Journal of Nuclear Materials 541(2020), 152416
Journal of Nuclear Materials, 541(152416):152416. Elsevier
Journal of Nuclear Materials
Journal of Nuclear Materials, 541(152416):152416. Elsevier
Journal of Nuclear Materials
The lifetime of tungsten (W) monoblocks under fusion conditions is ambivalent. In this work, the microstructure dependent mechanical behaviour of pulsed high heat flux (HHF) exposed W monoblock is investigated. Two different microstructural states, i
Autor:
Hirohiko Tanaka, Thomas Morgan, J.W.M. Vernimmen, Shuangyuan Feng, Shin Kajita, D. Nagata, Rongshi Zhang, Yuki Hayashi, Noriyasu Ohno, Naoaki Yoshida
Publikováno v:
Journal of Nuclear Materials, 548, 152844
Journal of Nuclear Materials, 548:152844. Elsevier
Shin Kajita, Thomas Morgan, Hirohiko Tanaka, Yuki Hayashi, Naoaki Yoshida, Daisuke Nagata, Jordy Vernimmen, Shuangyuan Feng, Rongshi Zhang, Noriyasu Ohno, Accelerated/reduced growth of tungsten fuzz by deposition of metals, Journal of Nuclear Materials, Volume 548, 2021, 152844, ISSN 0022-3115, https://doi.org/10.1016/j.jnucmat.2021.152844.
Journal of Nuclear Materials, 548:152844. Elsevier
Shin Kajita, Thomas Morgan, Hirohiko Tanaka, Yuki Hayashi, Naoaki Yoshida, Daisuke Nagata, Jordy Vernimmen, Shuangyuan Feng, Rongshi Zhang, Noriyasu Ohno, Accelerated/reduced growth of tungsten fuzz by deposition of metals, Journal of Nuclear Materials, Volume 548, 2021, 152844, ISSN 0022-3115, https://doi.org/10.1016/j.jnucmat.2021.152844.
From the helium (He) plasma irradiations to tungsten performed in the Magnum-PSI device, the effects of deposition of metals on the helium-plasma induced fiberform nanostructures (fuzz) are discussed. It was found that fuzz was not formed at the cent
Autor:
Hiroyasu Tanigawa, Hideo Sakasegawa, Lizhen Tan, Weicheng Zhong, Chad M. Parish, B.K. Kim, Yutai Katoh
Publikováno v:
Journal of Nuclear Materials. 545:152634
Understanding the effects of helium on microstructures and mechanical properties of reduced-activation ferritic-martensitic steels is important to use of these steels in fusion reactor structures. The 9Cr-2WVTa steels were doped with 58Ni and 60Ni is
Publikováno v:
Journal of nuclear materials. 463:1071-1074
Molecular dynamics simulation has been performed to investigate the effects of irradiated helium atoms in tungsten on the bubble nucleation and the dislocation loop formation. Simulation results clearly show that helium atoms in tungsten tend to migr
Autor:
Seppo Koivuranta, R.A. Pitts, J. Likonen, Antti Hakola, J.P. Coad, Anna Widdowson, J. Karhunen
Publikováno v:
Journal of Nuclear Materials
Likonen, J, Coad, J P, Hakola, A, Karhunen, J, Koivuranta, S, Pitts, R, Widdowson, A M & JET Contributors 2015, ' Measurement of dust conversion factor for the JET carbon divertor phases ', Journal of Nuclear Materials, vol. 463, pp. 842-846 . https://doi.org/10.1016/j.jnucmat.2014.10.066
Likonen, J, Coad, J P, Hakola, A, Karhunen, J, Koivuranta, S, Pitts, R, Widdowson, A M & JET Contributors 2015, ' Measurement of dust conversion factor for the JET carbon divertor phases ', Journal of Nuclear Materials, vol. 463, pp. 842-846 . https://doi.org/10.1016/j.jnucmat.2014.10.066
We compare the deposition of material on poloidal sets of divertor tiles that had been exposed in JET in 1998–2009 and 1998–2007. Post mortem analyses suggest toroidally integrated deposition being increased by 197.5 cm 3 during 2007–2009. The
Autor:
Matti Laan, Antti Hakola, A. Lissovski, J. Karhunen, Peeter Paris, M. Aints, K. Piip, L. Hämarik
Publikováno v:
Journal of Nuclear Materials
Lissovski, A, Piip, K, Hämarik, L, Aints, M, Laan, M, Paris, P, Hakola, A & Karhunen, J 2015, ' LIBS for tungsten diagnostics in vacuum : Selection of analytes ', Journal of Nuclear Materials, vol. 463, pp. 923-926 . https://doi.org/10.1016/j.jnucmat.2014.11.096
Lissovski, A, Piip, K, Hämarik, L, Aints, M, Laan, M, Paris, P, Hakola, A & Karhunen, J 2015, ' LIBS for tungsten diagnostics in vacuum : Selection of analytes ', Journal of Nuclear Materials, vol. 463, pp. 923-926 . https://doi.org/10.1016/j.jnucmat.2014.11.096
A sample of pure bulk tungsten was studied by laser induced breakdown spectroscopy (LIBS) method with the aim to find out a set of W analytic lines allowing a reliable determination of main parameters of the laser-produced plasma. The background pres
Publikováno v:
Journal of Nuclear Materials
JET-EFDA contributors 2015, ' Co-deposited layers in the divertor region of JET-ILW ', Journal of Nuclear Materials, vol. 463, pp. 814-817 . https://doi.org/10.1016/j.jnucmat.2014.12.077
JET-EFDA contributors 2015, ' Co-deposited layers in the divertor region of JET-ILW ', Journal of Nuclear Materials, vol. 463, pp. 814-817 . https://doi.org/10.1016/j.jnucmat.2014.12.077
Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-
Autor:
Indrek Jõgi, H.J. van der Meiden, J. Likonen, M. Aints, Matti Laan, A. Lissovski, Hugo Mändar, Peeter Paris, K. Piip, Antti Hakola, G. De Temmerman, J. Kozlova, J. Karhunen
Publikováno v:
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
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
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 dif
Autor:
Teodor T Zaharia, A. Kirschner, K. Bystrov, van der Lb Vegt, G. De Temmerman, D. Borodin, van Ga Gijs Swaaij, Wim Goedheer
Publikováno v:
Journal of Nuclear Materials, 438(suppl), S629-S632. Elsevier
Journal of Nuclear Materials, 438, Supplement, S629-S632
Journal of Nuclear Materials, 438, Supplement, S629-S632
Hydrocarbon injection experiments on molybdenum targets facing high-density plasmas in Pilot-PSI were simulated with the 3D Monte Carlo impurity transport and PSI code ERO. Impurity transport and calculation of redeposition profiles were decoupled by
Autor:
Laurent Marot, Seppo Koivuranta, G. De Temmerman, Marek Rubel, J.P. Coad, Darya Ivanova, Anna Widdowson, Antti Hakola, Ernst Meyer, Jari Likonen
Publikováno v:
Marot, L, Meyer, E, Rubel, M, Ivanova, D, Widdowson, A, Coad, J P, Likonen, J, Hakola, A, Koivuranta, S, De Temmerman, G & JET-EFDA contributors 2013, ' Performances of Rh and Mo mirrors under JET exposure ', Journal of Nuclear Materials, vol. 438, no. Supplement, pp. S1187-S1191 . https://doi.org/10.1016/j.jnucmat.2013.01.262
Journal of Nuclear Materials, 438, Supplement, S1187-S1191
Marot, L, Meyer, E, Rubel, M, Ivanova, D, Widdowson, A, Coad, P, Likonen, J, Hakola, A, Koivuranta, S, De Temmerman, G & JET-EFDA contributors 2012, ' Performances of Rh and Mo Mirrors Under JET Exposure ', Paper presented at 20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices, Aachen, Germany, 21/05/12-25/05/12 pp. Paper P3-080 .
Journal of Nuclear Materials, 438, Supplement, S1187-S1191
Marot, L, Meyer, E, Rubel, M, Ivanova, D, Widdowson, A, Coad, P, Likonen, J, Hakola, A, Koivuranta, S, De Temmerman, G & JET-EFDA contributors 2012, ' Performances of Rh and Mo Mirrors Under JET Exposure ', Paper presented at 20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices, Aachen, Germany, 21/05/12-25/05/12 pp. Paper P3-080 .
The aim of this work was to provide a comprehensive surface characterization of rhodium and molybdenum mirrors exposed on the main chamber wall of JET during campaigns with carbon plasma-facing components. As determined using X-ray photoelectron spec