Diffracted beam monochromator

Claim 1

A focusing crystal monochromator assembly for receiving diffracted polychromatic x-radiation, monochromatizing said diffracted polychromatic x-radiation and focusing the resultant monochromatized x-radiation at a detector, said monochromator assembly comprising: a collimator situated in the path of said polychromatic x-radiation for limiting the axial diversion of said polychromatic x-radiation and slidably removable from the path of said polychromatic x-radiation; a monochromator crystal fixedly supported in the path of the collimatized polychromatic x-radiation produced by said collimator for directing monochromatized x-radiation toward an x-radiation detector; a base, attachable to the 2 θ arm of a goniometer, having first and second substantially linear portions attached to each other and forming an oblique angle therebetween; a first support member extending transversely outwardly from said base and having a channel for supporting the collimator in the path of said diffracted polychromatic x-radiation and slidably removable from said path; a second support member extending transversely outwardly from said base for fixidly supporting the monochromator crystal in the path of the polychromatic x-radiation; the said second support member being positioned between said first support member and a detector for detecting the polychromatic x-radiation monochromatized by said monochromator crystal.