Tomographic reconstruction of 2D line radiation distribution in the JET MkIIGB divertor

被引：16

作者：

Huber, A

Coad, P

Coster, D

Ingesson, LC

Itami, K

Jachmich, S

Kirschner, A

Lehnen, M

Matthews, GF

Mertens, P

Philipps, V

Pospieszczyk, A

Schweer, B

Sergienko, G

Stamp, M

机构：

[1] EURATOM, Forschungszentrum Julich GMBH, Inst Plasma Phys, D-52425 Julich, Germany

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

[3] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[4] FOM, Inst Plasmfys, NL-3430 BE Nieuwegein, Netherlands

[5] Japan Atom Energy Res Inst, Naka, Ibaraki 3110193, Japan

[6] Russian Acad Sci, Inst High Temp, Moscow 127412, Russia

来源：

JOURNAL OF NUCLEAR MATERIALS | 2003年 / 313卷

关键词：

D O I：

10.1016/S0022-3115(02)01478-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A 2D-tomographic reconstruction of D-alpha- and C III-emission distribution in L-mode, density limit discharge has been performed and compared with results from other diagnostics (KL2, KS3). The observed emission patterns in a poloidal plane show a strong in-out asymmetry, which depends on local plasma parameter in the divertor. It is shown that the major contribution to D-alpha-emission, under the observed conditions, lies in excitation processes and that low-energy charge-exchange reactions with neutral deuterium can influence the ionisation balance of carbon and the recorded C III-emission line. The evolution of the intrinsic hydrogen and carbon impurity profiles has been analysed with respect to its dependence on the location of methane fuelling. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：925 / 930

页数：6

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