Removal of beryllium-containing films deposited in JET from mirror surfaces by laser cleaning

被引：30

作者：

Widdowson, A. ^{[1
]}

Coad, J. P. ^{[1
]}

de Temmerman, G. ^{[2
]}

Farcage, D. ^{[3
]}

Hole, D. ^{[4
]}

Ivanova, D. ^{[5
]}

Leontyev, A. ^{[3
]}

Rubel, M. ^{[5
]}

Semerok, A. ^{[3
]}

Schmidt, A. ^{[6
]}

Thro, P-Y. ^{[3
]}

机构：

[1] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] FOM Inst Plasma Phys Rijnhuizen, NL-3439 MN Nieuwegein, Netherlands

[3] CEA Saclay, DEN DANS DPC SCP LILM, F-91191 Gif Sur Yvette, France

[4] Univ Sussex, Dept Engn & Design, Brighton BN1 9QH, E Sussex, England

[5] Assoc EURATOM VR, Royal Inst Technol, Alfven Lab, S-10044 Stockholm, Sweden

[6] Assoc EURATOM FZJ, Forschungszentrum Julich, IEF Plasmaphys, Julich, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2011年 / 415卷 / 01期

关键词：

D O I：

10.1016/j.jnucmat.2010.11.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A set of stainless steel (SS) and molybdenum mirror samples located in the divertor and at the outer mid-plane of the vessel were exposed in JET from 2005 to 2007. A selection of these mirror samples with well adhered deposits (i.e. not flaking) of up to a few hundred nanometers in thickness and with Be/C ratios ranging from 0 to similar to 1 have been cleaned using a laser system developed at CEA, Saclay. Following laser cleaning the recovered reflectivity was generally better in the infrared than the visible spectrum, with recovery of up to 90% of the initial reflectivity being obtained at 1600 nm for both Mo and SS mirrors falling as low as 20-30% of initial reflectivity at a wavelength of 400 nm for some SS mirrors, rising to similar to 80% for Mo mirrors. Some deposit remained on the mirrors after the cleaning trials. (C) 2010 EURATOM. Published by Elsevier B.V. All rights reserved.

引用

页码：S1199 / S1202

页数：4

共 6 条

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