Determination of retained tritium from ILW dust particles in JET

N. Ashikawa*, Y. Torikai, N. Asakura, T. Otsuka, A. Widdowson, M. Rubel, M. Oyaizu, M. Hara, S. Masuzaki, K. Isobe, Y. Hatano, K. Heinola, A. Baron-Wiechec, S. Jachmich, T. Hayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Quantitative tritium inventory in dust particles from campaigns in the JET tokamak with the carbon wall (2007–2009) and the ITER-like wall (ILW 2011–2012) were determined by the liquid scintillation counter and the full combustion method. A feature of this full combustion method is that dust particles were covered by a tin (Sn) which reached 2100 K during combustion under oxygen flow. The specific tritium inventory for samples from JET with carbon and with metal walls was measured and found to be similar. However, the total tritium inventory in dust particles from the ILW experiment was significantly smaller in comparison to the carbon wall due to the lower amount of dust particles generated in the presence of metal walls.

Original languageEnglish
Article number100673
JournalNuclear Materials and Energy
Volume22
DOIs
StatePublished - Jan 2020
Externally publishedYes

Keywords

  • Dust
  • Full combustion method
  • ITER-Like Wall
  • JET
  • Liquid scintillography
  • Tritium

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