Analysis of lattice locations of deuterium in tungsten and its application for predicting deuterium trapping conditions - CEA - Commissariat à l’énergie atomique et aux énergies alternatives
Article Dans Une Revue Physical Review Materials Année : 2024

Analysis of lattice locations of deuterium in tungsten and its application for predicting deuterium trapping conditions

Résumé

Retention of hydrogen isotopes (protium, deuterium, and tritium) in tungsten is one of the most severe issues in the design of fusion power plants, since significant trapping of tritium may cause exceeding radioactivity safety limits in future reactors. Hydrogen isotopes in tungsten can be detected using the nuclear reaction analysis method in the channeling mode (NRA/C). However, the information hidden within the experimental spectra is subject to interpretation. In this work, we propose the methodology to interpret the response of the experimental NRA/C spectra to the specific lattice locations of deuterium by simulations of the NRA/C spectra from atomic structures as obtained from the first-principles calculations. We show that trapping conditions, i.e., states of local crystal structures retaining deuterium, affect the lattice locations of deuterium and the change of lattice locations can be detected by the ion channeling method. By analyzing the experimental data, we are able to determine specific information on the deuterium trapping conditions, including the number of deuterium atoms trapped by one vacancy as well as the presence of impurity atoms along with deuterium in vacancies.
Fichier principal
Vignette du fichier
2312.09112v1.pdf (11.63 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

cea-04765572 , version 1 (05-11-2024)

Identifiants

Citer

Xin Jin, Flyura Djurabekova, Etienne A Hodille, Sabina Markelj, Kai Nordlund. Analysis of lattice locations of deuterium in tungsten and its application for predicting deuterium trapping conditions. Physical Review Materials, 2024, 8 (4), pp.043604. ⟨10.1103/physrevmaterials.8.043604⟩. ⟨cea-04765572⟩
36 Consultations
4 Téléchargements

Altmetric

Partager

More