Monochromator and method of manufacturing the same

摘要

In a method of manufacturing a monochromator (2) a base member (4) obtained by cutting a cylindrical body (A) having a center axial line at a maximum asymmetric angle alpha o with respect to a plane orthogonal to the center axial line of the cylindrical body (4) is prepared. Next, the thus obtained ellipsoidal asymmetric cut surface of the base member (4) is shaped along a peripheral surface of an imaginary cylindrical body (B) having a radius R0, into an asymmetric cut curved-surface (2a). Then, a monochromator Si crystal (5) is bonded to the asymmetric cut curved-surface (2a) of the base member (4). Both the asymmetric angle and the radius of curvature for a desired wavelength within a wide wavelength range can be simultaneously tuned only by the phi -axis rotation. <IMAGE>