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Direct comparative test of single crystal and polycrystalline diagnostic mirrors exposed in TEXTOR in erosion conditions
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2005 (English)In: 32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets: Europhysics Conference Abstracts, 2005, 1726-1729 p.Conference paper, Published paper (Refereed)
Abstract [en]

First direct comparative test of single crystal and polycrystalline diagnostic mirror materials under erosion conditions has been made in TEXTOR. Before exposure in TEXTOR, glow discharge cleaning has efficiently restored the reflectivity of initially oxidized mirrors. After the exposure, no significant changes in total reflectivity were observed. Drastic increase of diffuse reflectivity was measured for polycrystalline molybdenum mirror, but not for the single crystal. Thus, specular reflectivity of single crystal is significantly higher than of polycrystalline one. The most affected wavelength range is 250-1000 nm, no significant changes of reflectivity was noticed in the range 1000-2000 nm. No or negligible effect of erosion on polarization characteristics of mirrors was measured.

Place, publisher, year, edition, pages
2005. 1726-1729 p.
Series
Europhysics Conference Abstracts, Vol. 3
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-148512Scopus ID: 2-s2.0-84873394245ISBN: 978-162276332-0 (print)OAI: oai:DiVA.org:kth-148512DiVA: diva2:740597
Conference
32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets; Tarragona, Spain, 27 June - 1 July, 2005
Note

QC 20140825

Available from: 2014-08-25 Created: 2014-08-08 Last updated: 2014-08-25Bibliographically approved

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Rubel, Marek

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Fusion Plasma PhysicsAlfvén Laboratory Centre for Space and Fusion Plasma PhysicsMicroelectronics and Information Technology, IMIT
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Output format
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