LIBS analysis of tritium in thin film-type samples
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International audience
LIBS analysis of tritium in thin film-type samples
...Development of methodology for identification and assessment of ecosystems with an underground source of tritium.
Published in Journal of environmental radioactivity
The article considers the issues of working out the suitable approaches for identifying zones with the presence of underground near-surface waters with increased concentrations of tritium discharged into a surface reservoir. The following methods were used as possible methods: determination of tritium content in snow cover, determination of tritium...
Tritiated stainless steel (nano)particle release following a nuclear dismantling incident scenario: Significant exposure...
...Published in Journal of hazardous materials
Nuclear facilities continue to be developed to help meet global energy demands while reducing fossil fuel use. However, an incident during the dismantling of these facilities could accidentally release tritiated particles (e.g. stainless steel) into the environment. Herein, we investigated the environmental dosimetry, fate, and impact of tritiated ...
Development of the WAter-interface Permeation In Tritium-exposed materIals (Wapiti) tritium experiment and preliminary E...
The control of tritium inventory and permeation is crucial for the safe operation of fusion reactors. To measure these phenomena, a novel tritium experiment is introduced and used to measure tritium permeation through Eurofer97 at room temperature, with several possibilities for the downstream conditions: air or water and overhead air. A pre-loadin...
The JET hybrid scenario in Deuterium, Tritium and Deuterium-Tritium
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Published in Nuclear Fusion
The JET hybrid scenario has been developed from low plasma current carbon wall discharges to the record-breaking Deuterium-Tritium plasmas obtained in 2021 with the ITER-like Be/W wall. The development started in pure Deuterium with refinement of the plasma current, and toroidal magnetic field choices and succeeded in solving the heat load challeng...
Temporal variation of tritium concentration in monthly precipitation collected at a Difficult-to-Return Zone in Namie To...
Published in Environmental science and pollution research international
This article discusses tritium concentrations in monthly precipitation in part of the Difficult-to-Return Zone in Namie Town during 2012-2021. The tritium concentrations, which were measured with a low background liquid scintillation counter after carrying out an enrichment procedure, fluctuated seasonally from 0.10 ± 0.02 to 0.85 ± 0.02 Bq L-1. Th...
Conceptual design and supporting analysis of a double wall heat exchanger for an ARC-class fusion reactor Primary coolin...
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In the fight against climate change through the progress of fusion technology, the Affordable, Robust and Compact (ARC) fusion reactor design is under development at Commonwealth Fusion Systems (CFS) and Massachusetts Institute of Technology (MIT)- Plasma Science and Fusion Center, in collaboration with the Ente Nazionale Idrocarburi (ENI) S.p.A. T...
Influence of irrigation approaches and spatial geolocation on tritium speciation, uptake and depuration.
Published in Chemosphere
Pine needles and tree cores from a tritium (T) contaminated phytoremediation forest at the Savannah River Site (SRS in Aiken, SC) Mixed Waste Management Facility (MWMF) were measured for total T and T speciation and compared to other locations at the SRS and the surrounding area. Tree core ages ranged from 9 to 14 years old, covering over half of t...
Tritiated thymidine induces developmental delay, oxidative stress and gene overexpression in developing zebrafish (Danio...
Tritium is a betta emitter radionuclide. Being an isotope of hydrogen, it is easily transferred to different environmental compartments, and to human and non-human biota. Considering that tritium levels are expected to rise in the upcoming decades with the development of nuclear facilities producing tritium using fission processes, investigating th...
Pure Beta Emitters in Water Samples from Neutron Irradiation Facilities: Activity Determination Via Vacuum Distillation ...
Published in EPJ Web of Conferences
In the decommissioning of nuclear facilities, it is necessary to assess the radioactivity inventory for waste classification and management. For nuclear fusion experiments or accelerator-driven neutron sources, the main contribution to the radiological inventory comes from activation products and tritium. When water is used as coolant of components...
