Point-focusing monochromator crystal realized by hot plastic deformation of a Ge wafer

نویسندگان

Hiroshi Okuda

Kazuo Nakajima

Kozo Fujiwara

Kohei Morishita

Shojiro Ochiai

چکیده

Pre-polished Ge(111) single-crystal wafers were deformed just below the melting temperature to prepare point-focusing Johansson monochromator crystals. The (111) lattice plane had curvature 2R in the focusing plane and R perpendicular to it, with a hemispherical inner surface with a radius of R = 600 mm. By using Cu Kalpha radiation, the diverging X-ray beam was focused onto a small spot.

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