Study of the feasibility of applying laser-induced breakdown spectroscopy for in-situ characterization of deposited layers in fusion devices

被引：35

作者：

Huber, A. ^{[1
]}

Schweer, B. ^{[1
]}

Philipps, V. ^{[1
]}

Leyte-Gonzales, R. ^{[1
]}

Gierse, N. ^{[1
]}

Zlobinski, M. ^{[1
]}

Brezinsek, S. ^{[1
]}

Kotov, V. ^{[1
]}

Mertens, P. ^{[1
]}

Samm, U. ^{[1
]}

Sergienko, G. ^{[1
]}

机构：

[1] Forschungszentrum Julich, Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, D-52425 Julich, Germany

来源：

PHYSICA SCRIPTA | 2011年 / T145卷

关键词：

REMOVAL;

D O I：

10.1088/0031-8949/2011/T145/014028

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This paper presents a feasibility study of laser-induced breakdown spectroscopy (LIBS) for the development of an in-situ diagnostic for the characterization of deposition layers on plasma-facing components in fusion devices. Preferentially, LIBS would be applied in the presence of a toroidal magnetic field and under high vacuum conditions. The impact of the laser-energy densities on the laser-induced plasma parameters and correspondingly on the number of emitted photons and on the reproducibility of the LIBS method has been studied in laboratory experiments and in TEXTOR on fine-grain graphite (EK98) as well as on bulk W samples coated with carbon and metallic-containing deposits. The effect of magnetic fields and of ambient pressures in the range from 2x10(-4) Pa to 10 Pa on the carbon plasma plume produced by the LIBS technique has been studied on TEXTOR between plasma pulses. The possibility of applying this method to ITER is discussed.

引用

页数：5

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