The development of a high efficiency focussing [sic] polarizing x-ray crystal monochromator



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Attempts to perform x-ray fluorescence energy dispersive analysis on low-Z matrix samples are complicated by the detection of a large number of exciting x-ray photons scattered by the sample. This difficulty may be circumvented by plane polarizing the exciting flux of x-rays and positioning the detector in such a manner that a low probability of detecting scattered x-rays is obtained. The proposed method of polarization is Bragg diffraction at an angle near 90 [degrees]. A search method for selecting a suitable polarizer material from the Powder Diffraction File is proposed and executed on a small scale. An analysis of the x-ray optics of an analyzing device is theoretically developed and confirmed experimentally. Construction and implementation of an analyzing device which utilizes polarized x-rays is accomplished with promising results.