Hydrocarbon injection for quantification of chemical erosion yields in tokamaks

被引：53

作者：

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.

机构：

[1] Forschungszentrum Julich, Inst Plasma Phys, Assoc EURATOM FZJ,Trilateral Euregio Cluster, D-52425 Julich, Germany

[2] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[3] Max Planck Inst Plasma Phys, IPP, EURATOM Assoc, D-85748 Garching, Germany

[4] Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada

[5] Gen Atom Co, San Diego, CA 92186 USA

[6] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2007年 / 363卷

关键词：

spectroscopy; ITER; carbon impurities; erosion and deposition; divertor;

D O I：

10.1016/j.jnucmat.2007.01.190

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：1119 / 1128

页数：10

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