Fig.13-7　Neutron focusing images obtained by large-scale elliptical supermirror ((a): unfocused direct beam; (b): focused beam)

Fig.13-7　Neutron focusing images obtained by large-scale elliptical supermirror ((a): unfocused direct beam; (b): focused beam)

The FWHM of the focused beam was 0.128 mm, and a focusing gain of 52 was observed using an imaging plate. Inset photograph shows elliptical NiC/Ti supermirror with m = 4 coated on 400-mm-long substrate.

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