Importance

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Abstract

A multi-layer reflection mirror for soft X-ray to vacuum ultraviolet ray, comprises a substrate, a plurality of first layers, and a plurality of second layers formed on the substrate alternately with the first layers. The first layer primarily consists of at least one of single elements, such as ruthenium or of a boride, carbide, silicide, nitride oxide of a transition metal. The second layer primarily consists of at least one of compounds of carbon, silicon (e.g. carbide, nitride and oxide of silicon), boron (e.g. carbide, nitride and oxide of boron), beryllium (e.g. carbide, nitride and oxide of beryllium) and aluminum (e.g. carbide, nitride and oxide of aluminum).

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First Claim