'Mixed-material evolution analysis of the ITER divertor'

J. N. Brooks, J. P. Allain

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Evolution of the ITER outer divertor target surface is analyzed for the case of wall-sputtered beryllium transported to an initially tungsten divertor. Coupled codes for the convective edge plasma, impurity transport, and mixed-surface sputtering, give the wall-source beryllium flux to the divertor, the sputtering erosion/redeposition response, and the resulting beryllium surface content/growth. The analysis shows zero net Be growth over most (∼80%) of the divertor, due to high re-sputtering and reflection-with an equilibrium Be/W surface quickly formed (∼10 s)-but with a region near the strike point having substantial (∼1 nm/s) growth.

Original languageEnglish (US)
Pages (from-to)123-126
Number of pages4
JournalJournal of Nuclear Materials
Volume390-391
Issue number1
DOIs
StatePublished - Jun 15 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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