Premium
Rare earth experimental L x‐ray fluorescence cross‐sections at 13 and 14 keV with synchrotron radiation
Author(s) -
Barrea Raúl A.,
Bonzi Edgardo V.
Publication year - 2001
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.456
Subject(s) - synchrotron radiation , physics , resolution (logic) , radiation , x ray fluorescence , atomic physics , photon , detector , synchrotron , fluorescence , x ray , optics , nuclear physics , artificial intelligence , computer science
Experimental 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 ω 1 , f 12 and f 13 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.