A method for deposition of fine phosphor powders onto flat substrates is proposed. Thin screens ͑0.06-1.2 mg/cm 2 ͒ of submicrometer particles of Y 2 O 3 :Eu 3+ were successfully obtained by the modified flame spray pyrolysis technique. Nebulized aqueous solutions of nitrates and chlorides of rare earth elements produced spherical phosphor particles in premixed air-propane flames. The optimum content of activator was 8.5 mol %. The highest intensity of photoluminescence in transmission mode was achieved for the samples 1.0-1.3 conventional phosphor layers thick, corresponding to approximately 0.5 mg/cm 2 for the geometric mean particle size of 440 nm. Brightness of the synthesized phosphor nearly achieved that of the commercial phosphor.

Abstract. Using a multidetector system on the YuMO spectrometer allows shortening the time of measurements. The quantitative comparison of the measurement time using one and twodetector mode is done. The time range for experiments was from several minutes up to 12 hours. It was shown that two-detector system shortens more than twice the time of the measurement. While making a structural investigation using advanced software the twodetector system allows to treat the data at a qualitatively new level. An example illustrating the features of the channels choice and measurement time on the spectrometer was shown. The results of this paper could be used when planning the experiments on the YuMO spectrometer, for modernization of the installation and for equipment using time-of-flight method.

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