Influence of the chemical environment changes on the line shape and intensity ratio values for La, Ce and Pr L lines spectra

We measured the energy shifts and relative intensities of L alpha, L beta and L gamma components in 26 elements under identical conditions using Si(Li) detector and Am-241 as the source of excitation. The purpose of these measurements was to characterize the dependence of the line position and line width with the chemical environment changes. The spectra were fitted by Gaussian functions and the background was removed from the experimental spectra using a polynomial function. The present intensity ratio values are in good agreement with the data of Scofield [1]. The values measured by Ertugrul [2] show a similar behavior but somewhat higher. (C) 2011 Elsevier B.V. All rights reserved.