Optimization of the signal-to-background ratio in energy-dispersive X-ray fluorescence analysis using a Si(Li) detector
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A mathematical model of an energy dispersive X-ray fluorescence spectrometer is discussed based on the analysis of the processes of radiation transport in the sample and in the detector and electron transport in the detector. The results of calculations performed according to the proposed model were compared with the available experimental data. The effect of the parameters of primary X-radiation and the detector’s thickness on the signal-to-background ratio was calculated. It was shown that with a change of the primary radiation source and the detector’s thickness, the signal-to-background ratio of the analytical signal varied by several orders of magnitude.
KeywordsBackground Signal Compton Scattering Titanium Sample 241Am Source Electron Escape
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