Abstract
AbstractExperimental determinations of L x‐ray fluorescence cross‐sections for elements with 64 ≤ Z ≤ 70 at 13 and 14 keV were carried out with synchrotron radiation. The experimental set‐up provided a linearly polarized monoenergetic photon beam producing a very low background, which improved the signal‐to‐noise ratio and reduced the experimental uncertainties. Results of the experimental cross‐sections obtained for the L lines were grouped considering the transitions scheme, the energies of the emission lines and the detector's resolution. The data obtained were compared with theoretical data using two different data tables. Very good agreement was found between our experimental values and the theoretical values calculated using Puri et al.'s data. A new set of ω1, f12 and f13 coefficients for Gd were also used to calculate theoretical cross‐sections and the experimental values were in excellent agreement. Copyright © 2001 John Wiley & Sons, Ltd.
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