Tritium (T) distributions on tungsten (W)-coated plasma-facing tiles used in the third ITER-like wall campaign (2015–2016) of the Joint European Torus (JET) were examined by means of an imaging plate technique and β-ray induced x-ray spectrometry, and they were compared with the distributions after the second (2013–2014) campaign. Strong enrichment of T in beryllium (Be) deposition layers was observed after the second campaign. In contrast, T distributions after the third campaign was more uniform though Be deposition layers were visually recognized. The one of the possible explanations is enhanced desorption of T from Be deposition layers due to higher tile temperatures caused by higher energy input in the third campaign.

Tritium distributions on W-coated divertor tiles used in the third JET ITER-like wall campaign / Hatano, Y., Lee, S.E., Likonen, J., Koivuranta, S., Hara, M., Masuzaki, S., Asakura, N., Isobe, K., Hayashi, T., Ikonen, J., Widdowson, A., Litaudon, X., Abduallev, S., Abhangi, M., Abreu, P., Afzal, M., Aggarwal, K.M., Ahlgren, T., Ahn, J.H., Aho-Mantila, L., et al.. - In: NUCLEAR MATERIALS AND ENERGY. - ISSN 2352-1791. - 18:(2019), pp. 258-261. [10.1016/j.nme.2019.01.001]

Tritium distributions on W-coated divertor tiles used in the third JET ITER-like wall campaign

Subba F.;Zanino R.;
2019

Abstract

Tritium (T) distributions on tungsten (W)-coated plasma-facing tiles used in the third ITER-like wall campaign (2015–2016) of the Joint European Torus (JET) were examined by means of an imaging plate technique and β-ray induced x-ray spectrometry, and they were compared with the distributions after the second (2013–2014) campaign. Strong enrichment of T in beryllium (Be) deposition layers was observed after the second campaign. In contrast, T distributions after the third campaign was more uniform though Be deposition layers were visually recognized. The one of the possible explanations is enhanced desorption of T from Be deposition layers due to higher tile temperatures caused by higher energy input in the third campaign.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2781242