This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2007.01.190 in citations.
Hydrocarbon injection for quantification of chemical erosion yields in tokamaks
Hydrocarbon injection for quantification of chemical erosion yields in tokamaks
Chemical erosion of carbon can be described as function of the incident ion flux, the ion energy and the surface temperature. Spectroscopy on the hydrocarbon break-up products CH and C-2 is applied to determine in-situ hydrocarbon fluxes and quantify the chemical erosion by means of hydrocarbon inje...
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Personal Name(s): | Brezinsek, S. |
---|---|
Pospieszczyk, A. / Borodin, D. / Stamp, M. F. / Pugno, R. / McLean, A. G. / Fantz, U. / Manhard, A. / Kallenbach, A. / Brooks, N. H. / Groth, M. / Mertens, Ph. / Philipps, V. / Samm, U. | |
Contributing Institute: |
Plasmaphysik; IEF-4 |
Published in: | Journal of nuclear materials, 363-365 (2007) S. 1119 - 1128 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2007
|
Physical Description: |
1119 - 1128 |
DOI: |
10.1016/j.jnucmat.2007.01.190 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Journal of Nuclear Materials
363-365 |
Subject (ZB): | |
Publikationsportal JuSER |
Chemical erosion of carbon can be described as function of the incident ion flux, the ion energy and the surface temperature. Spectroscopy on the hydrocarbon break-up products CH and C-2 is applied to determine in-situ hydrocarbon fluxes and quantify the chemical erosion by means of hydrocarbon injection. Present-day knowledge on critical issues concerning the erosion yield and its determination is presented: Effective inverse photon efficiencies are measured in TEXTOR for different hydrocarbon species and compared with calculations from HYDKIN. The underlying database for the methane break-up, used in different erosion/deposition models, has been put to test. The chemical erosion yield related to higher hydrocarbons is determined to be lower in the JET outer divertor than measured in previous experiments. In ASDEX Upgrade and DIII-D first in-situ calibrations of hydrocarbon fluxes in the detached outer divertor are performed. (c) 2007 Elsevier B.V. All rights reserved. |