Measurement of L X-ray production cross sections and relative intensities of some lanthanide compounds depending on the temperature

Abstract

L X-ray intensity ratios for CeO2, Sm2(SO4)3, Ho2O3, and Yb2O3 compounds were experimentally investigated. The measurements were gauged following excitation by 59.54 keV γ-rays from a 100 mCi 241Am radioactive annular source at different temperatures in situ. Temperature change occurred between 50 °C and 400 °C. L X-ray emission spectra were obtained by using a solid-state Si(Li) X-ray detector. L X-ray production cross sections, intensity ratios, and full-width half maximum (FWHM) values for the compounds were determined by evaluating the emission spectra varying with the temperature. According to the results obtained, it was observed that Lβ1 X-rays were less influenced in comparison with Lα X-rays while Lα X-rays were also less influenced in comparison with Lβ2 X-rays.

Measurement of L subshell fluorescence yield ratios of some high Z elements by selective excitation method

“…Several investigators have measured the L X-ray intensity ratios, L subshell fluorescence yield and Coster-Kronig transition parameters by exciting the target with gamma radiation, charged particles and synchrotron radiation. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Singh et al [4] have measured average L shell fluorescence yields for some elements in the range 56 ≤ Z ≤ 92. Ertugrul et al [5] have measured average 2p subshells fluorescence yields for the elements 60 ≤ Z ≤ 90.…”

“…Several investigators have determined L subshell fluorescence yield and Coster-Kronig transition parameters for medium and high Z targets using synchrotron radiation. [15][16][17][18][19] Barrea et al [15] have determined the L subshell fluorescence yields and Coster-Kronig transition probabilities for Ba target by selective excitation method. They suggested the need of more accurate fluorescence cross-sections, either experimental or theoretical, to improve the Coster-Kronig and fluorescence yields' determinations.…”

“…They claim that a large discrepancy between theory and experiment may be due to condensed matter effect in the sample. Recently, Cinan et al [18] have showed dependence of L X-ray production cross sections and relative intensities of some lanthanide compound on the temperature of the target. Very recently, Menesquen and Lepy [19] have determined three L shell fluorescence yields and Coster-Kronig transition probabilities of Gd by using selective excitation method.…”