L. González , P. Morán , V. Delgado , E. Vañó , A. López-Fraguas
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Spectrometry of the photon beam from an X-ray tube by X-ray fluorescence
A method to perform the measurement of photon beam spectra from X-ray tubes is described. It consists of exciting the fluorescence of elements with their K-binding energies lying within the energetic range of the bremsstrahlung spectrum, using the tube photon beam, and a 241Am excitation source as a reference, to normalize individual results of each element. According to the numerical treatment described in this article, uncertainties in relative photon flux determinations range from 10% to 2% depending on the photon energies. This method overcomes the difficulties associated with the detection of high photon rates produced by an X-ray tube.
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