Relaxation of Surface Tension Waves on a Liquid Metal Mirror for a Fast-Ignition Laser Fusion Plant

Takayoshi NorimatsuOsaka University, Institute of Laser Engineering, Yamada-oka, Suita, Osaka 5650871, Japan

Oleg KotyaevInstitute for Laser Technology, Yamada-oka, Suita, Osaka 5650871, Japan

Yoshinori ShimadaInstitute for Laser Technology, Yamada-oka, Suita, Osaka 5650871, Japan

Shinri KurahashiInstitute for Laser Technology, Yamada-oka, Suita, Osaka 5650871, Japan

Shinji MotokoshiInstitute for Laser Technology, Yamada-oka, Suita, Osaka 5650871, Japan

Katsuhiro MikamiInstitute for Laser Technology, Yamada-oka, Suita, Osaka 5650871, Japan

Kei SasakiOsaka University, Institute of Laser Engineering, Yamada-oka, Suita, Osaka 5650871, Japan

Takahisa JitsunoOsaka University, Institute of Laser Engineering, Yamada-oka, Suita, Osaka 5650871, Japan

Kohei YamanoiOsaka University, Institute of Laser Engineering, Yamada-oka, Suita, Osaka 5650871, Japan

Hiroyuki FurukawaInstitute for Laser Technology, Yamada-oka, Suita, Osaka 5650871, Japan

Tomoaki KunugiKyoto University, C3 d2S06 Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8540, Japan

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Abstract

A grazing incidence, shallow liquid metal mirror could be used as the final optic for the heating laser in a fast-ignition fusion power plant. The relaxation of vibrations on the surface of liquid mercury following laser irradiation was measured experimentally in this study. The results suggested that vibrations on a 0.25-mm-thick mirror were small enough to allow 4-Hz laser operation.

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Relaxation of Surface Tension Waves on a Liquid Metal Mirror for a Fast-Ignition Laser Fusion Plant

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Relaxation of Surface Tension Waves on a Liquid Metal Mirror for a Fast-Ignition Laser Fusion Plant

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