Measurements of carbon, deuterium and boron deposition in DIII-D.
Conference
·
OSTI ID:952802
- Lawrence Livermore National Laboratory, Livermore, CA
- General Atomics, San Diego, CA
- University of Toronto Insitute for Aerospace Studies, Toronto, Canada
An experiment was recently conducted in DIII-D in which {sup 13}C methane ({sup 13}CH{sub 4}) was injected from the upper divertor plenum into 22 identical lower single null divertor L-mode plasmas. Twenty-nine graphite tiles were subsequently removed and analyzed to determine the spatial distribution of {sup 13}C deposited on the main chamber wall and divertor. {sup 13}C coverage was mapped by ion beam analysis using the {sup 13}C({sup 3}He, p){sup 15}N nuclear reaction. This technique also measures deuterium, boron and {sup 12}C content in the near-surface region of the tiles. The measurements show the {sup 13}C is deposited mainly at the inner divertor.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 952802
- Report Number(s):
- SAND2004-2191C
- Country of Publication:
- United States
- Language:
- English
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·
OSTI ID:7284886