Optical characteristics of recrystallized tungsten mirrors exposed to low-energy, high flux D plasmas

被引：11

作者：

Belyaeva, A. I. ^{[2
]}

Alimov, V. Kh. ^{[1
,3
]}

Galuza, A. A. ^{[4
]}

Isobe, K. ^{[1
]}

Konovalov, V. G. ^{[5
]}

Ryzhkov, I. V. ^{[5
]}

Savchenko, A. A. ^{[2
]}

Slatin, K. A. ^{[2
]}

Voitsenya, V. S. ^{[5
]}

Yarnanishi, T. ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Tritium Technol Grp, Tokai, Ibaraki 3191195, Japan

[2] Natl Tech Univ, Kharkiv Polytech Inst, UA-61002 Kharkov, Ukraine

[3] Toyama Univ, Hydrogen Isotope Res Ctr, Toyama 9308555, Japan

[4] Natl Acad Sci Ukraine, Inst Electrophys & Radiat Technol, UA-61002 Kharkov, Ukraine

[5] Kharkov Inst Phys & Technol, Natl Sci Ctr, Inst Plasma Phys, UA-61108 Kharkov, Ukraine

来源：

JOURNAL OF NUCLEAR MATERIALS | 2011年 / 413卷 / 01期

关键词：

DIAGNOSTIC SYSTEMS; HIGH FLUENCES; 1ST MIRRORS; DEUTERIUM; IRRADIATION; ITER;

D O I：

10.1016/j.jnucmat.2011.03.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface topography and optical properties of recrystallized tungsten exposed to a low-energy (38 eV/D), high flux (10(22) D/m(2) s) deuterium plasma with an ion fluence of 10(26) D/m(2) at various temperatures was investigated. It was found that the surface morphology weakly depends on the exposure temperature in the range 320-695 K with the exception of the narrow temperature region around 535 K, where large changes to all optical characteristics occurs. After plasma exposure at this temperature, the surface topography of the W sample is characterized by active blistering as has already been indicated in previous publications. The reflectance found in direct measurements at normal incidence drops in the wavelength interval 220-650 nm, whereas the estimations of reflectance using the ellipsometry data demonstrate some increase. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5 / 10

页数：6

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