Novel method for determination of tritium depth profiles in metallic samples

JET Contributors, M. Kotschenreuther, T. Ahlgren, L. Aho-Mantila, M. Airila, C. Björkas, K. Heinola, A. Lahtinen, K. Nordlund, E. Safi, S.-P. Pehkonen, Elina Pajuste, A. Jarvinen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Tritium accumulation in fusion reactor materials is considered a serious radiological issue, therefore a lot of effort has been concentrated on the development of radiometric techniques. A novel method, based on gradual dissolution, for the determination of the total tritium content and its depth profiles in metallic samples is demonstrated. This method allows for the measurement of tritium in metallic samples after their exposure to a hydrogen and tritium mixture, tritium containing plasma or after irradiation with neutrons resulting in tritium formation. In this method, successive layers of metal are removed using an appropriate etching agent in the controlled regime and the amount of evolved gases are measured by means of chromatography (gas composition and release rate) and a proportional gas flow detector (tritium). Results for the tritium profiles in neutron irradiated, plasma exposed and gas loaded beryllium are reported.

Original languageEnglish
Article number106006
JournalNuclear Fusion
Volume59
Issue number10
Number of pages6
ISSN0029-5515
DOIs
Publication statusPublished - Oct 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences

Cite this

JET Contributors, Kotschenreuther, M., Ahlgren, T., Aho-Mantila, L., Airila, M., Björkas, C., ... Jarvinen, A. (2019). Novel method for determination of tritium depth profiles in metallic samples. Nuclear Fusion, 59(10), [106006]. https://doi.org/10.1088/1741-4326/ab3056