Modification of optical properties of Be mirrors under bombardment by deuterium ions

Effects of D ion bombardment on Be mirror reflectance, R( λ), in λ=220–650 nm were studied as modelling the impact of charge exchange atoms in a fusion reactor. Without any mass change of mirror, a sharp drop of R( λ) was observed for different kinds of beryllium at high ion energies (600–1350 eV) a...

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Bibliographic Details
Published in:Journal of nuclear materials 2004-08, Vol.329, p.1476-1480
Main Authors: Voitsenya, V.S, Bardamid, A.F, Bondarenko, V.N, Konovalov, V.G, Orlinskij, D.V, Ryzhkov, I.V, Shapoval, A.N, Shtan', A.F, Solodovchenko, S.I, Vukolov, K.Yu
Format: Article
Language:English
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Summary:Effects of D ion bombardment on Be mirror reflectance, R( λ), in λ=220–650 nm were studied as modelling the impact of charge exchange atoms in a fusion reactor. Without any mass change of mirror, a sharp drop of R( λ) was observed for different kinds of beryllium at high ion energies (600–1350 eV) after ion fluence ∼10 18 ions/cm 2. It is hypothesized that under deuterium ions the BeO surface film was transformed into the Be(OD) 2 film accompanying by changing the film optical properties. Effects of ion energy and ion fluence variation on R( λ) of Be mirror are discussed.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2004.04.249