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Study of local carbon transport on graphite, tungsten and molybdenum test limiters in TEXTOR by 13CH4 tracer injection

  • A. Kreter
  • , P. Wienhold
  • , D. Borodin
  • , S. Brezinsek
  • , S. Droste
  • , T. Hirai
  • , A. Kirschner
  • , A. Litnovsky
  • , V. Philipps
  • , A. Pospieszczyk
  • , U. Samm
  • , O. Schmitz
  • , G. Sergienko
  • Jülich Research Centre

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

13CH4 was injected through an aperture in a roof-like test limiter covered by a graphite, tungsten or molybdenum plate during Ohmic discharges. The evolution of the deposition pattern was studied by in situ reflectometry during each plasma pulse. Amounts of locally deposited 13C and co-deposited background 12C in each shot were determined post-mortem. The 13C deposition efficiency is in a range of 0.05-0.2% and grows with the increasing amount of 12C. For the same 12C content the efficiency is of 0.11% for tungsten, 0.14% for molybdenum and 0.17% for graphite.

Original languageEnglish
Pages (from-to)179-183
Number of pages5
JournalJournal of Nuclear Materials
Volume363-365
Issue number1-3
DOIs
StatePublished - 15 Jun 2007
Externally publishedYes

Keywords

  • Amorphous films
  • C0100
  • Carbon-based materials
  • Erosion and deposition
  • F0800
  • First wall
  • High-Z material
  • M0700
  • Molybdenum
  • P0500
  • R0900
  • S1300
  • Sputtering
  • Surface analysis
  • T1000
  • TEXTOR
  • Tracer materials
  • Tungsten

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