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research papers
Some experimental and theoretical comparisons have been made of the effectiveness of four techniques which have been commonly used for monochromatizing X-radiation for use in diffraction studies of liquids: monochromator crystals, curved or flat; β-filter and pulse-height analyzer; balanced dual filters. The β-filter/pulse-height analyzer system alone results in unacceptable error, at both low and high s(s = 4πλ−1 sinθ). Dual filters can be made quite effective, actually approaching the resolution possible with monochromator crystals.