Numerical analysis of TDS spectra under high and low flux plasma exposure conditions

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper

Authors

Institutes & Expert groups

  • UGent - Universiteit Gent
  • Technische Universiteit Eindhoven - FOM Institute DIFFER
  • FZJ - Forschungszentrum Jülich GmbH
  • ITER - Organization - France

Documents & links

Abstract

A recently developed numerical model, based on the dislocation-driven nucleation of gas bubbles, is used to analyse experimental results on deuterium retention in tungsten under ITER relevant plasma exposure conditions. Focus is placed on understanding the relation between exposure temperature and flux on primary features of thermal desorption spectra: peak positions and intensities of the desorption flux. The model allows one to relate the peak positions with the size of plasma induced deuterium bubbles and envisage exposure conditions (temperature and flux) for their formation. Based on the performed analysis, dedicated experimental conditions to validate the model are proposed.

Details

Original languageEnglish
Title of host publicationPHYSICA SCRIPTA
Subtitle of host publication 15th International Conference on Plasma-Facing Materials and Components for Fusion Applications (PFMC)
Number of pages5
VolumeT167
DOIs
Publication statusPublished - 20 Feb 2016
EventPFMC 2015 - 15th international conference on Plasma-facing materials and components for fusion applications - Aix-en-Provence, France
Duration: 18 May 201522 May 2015
http://www.materials.cea.fr/en/Phocea/Vie_des_labos/Seminaires/index.php?id=28

Publication series

NamePhysica Scripta
PublisherIOP - IOP Publishing
ISSN (Print)0031-8949

Conference

ConferencePFMC 2015 - 15th international conference on Plasma-facing materials and components for fusion applications
CountryFrance
CityAix-en-Provence
Period2015-05-182015-05-22
Internet address

Keywords

  • Hydrogen, retention, plasma, blisters, bubbles

ID: 6771259