Influence of chemical effect on the K-shell X-ray production cross-sections and radiative Auger ratios of Zn complexes

Aylıkçı, V.; Bıyıklıoğlu, Zekeriya; Cengi̇z, E.; Aylikçi, N. Küp; Apaydın, G.; Aksoy, Canan; Tıraşoğlu, E.; Kanteki̇n, Hali̇t

doi:10.1016/j.chemphys.2009.10.007

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…Numerous reports have been published on the use of Kb/Ka X-ray intensity ratios as a tool for studying the changes of the valence electronic congurations of 3d transition metals in various compounds and alloys. [13][14][15][16][17][18][19][20][21] When measured with high resolution X-ray detection systems, the Ka and Kb ne structure is observed, and the inuence of chemical effects on individual Ka and Kb line positions and intensities has been studied and applied. [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] One common observation of such studies is that the Kb band is more inuenced by chemical effects than the Ka band.…”

Section: Introductionmentioning

confidence: 99%

Influence of chemical environment on the analysis of X-ray spectra of thick pellet samples containing 3d transition metal compounds

Fazinić

Mihalić

Mandić

2013

J. Anal. At. Spectrom.

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Nowadays quantitative analysis in energy dispersive X-ray Emission Spectroscopy is usually performed by the "fundamental parameter approach". Such an approach generally relies upon a good knowledge of fundamental physical parameters. As a rule none of the algorithms in use by laboratories performing routine analysis account for possible chemical effects on X-ray intensity ratios or energies. Here we tested the possible influence of such practice on reliability in the routine analysis of thick pellet samples containing transition metal compounds. A number of samples were prepared by mixing various proportions of MnO 2 , KMnO 4 , and Co 3 O 4 (sets A-B) or Cr 2 O 3 , K 2 Cr 2 O 7 , and Fe 2 O 3 (C-D). The samples were irradiated by 2 MeV proton beams and proton induced X-ray emission spectra were analyzed by a "fundamental parameter" approach using the GUPIXWIN code. The main interest has been to test the possibility of false Fe detection in the presence of large Mn and Co peaks (sets A-B) and/or Mn in the presence of large Cr and Fe peaks (sets C-D). The results of the analyses indicate false hits of Fe (sets A-B), and larger reported Mn concentrations than expected (sets C-D). However, in all the cases the reported concentrations for Fe or Mn are in between the limits of detection and quantitation. The influence of surface roughness and other effects have been discussed.

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Section: Introductionmentioning

confidence: 99%

Influence of chemical environment on the analysis of X-ray spectra of thick pellet samples containing 3d transition metal compounds

Fazinić

Mihalić

Mandić

2013

J. Anal. At. Spectrom.

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“…At the other side attempts have been made to use such observed variations in K X-ray intensity ratios and relative positions for various applications, including chemical speciation. [13][14][15][16][17][18][19][20][21][22][23][24][25] Recently it has been proposed to use the Kb/Ka X-ray intensity ratios as a promising sensitive tool for studying quantitatively the changes of the valence electronic configurations of 3d transition metals in various compounds and alloys. [26][27][28][29][30] In case of 3d transition metals the outermost 3d level becomes a broad band and in chemical compounds it forms the valence shells.…”

Section: Introductionmentioning

confidence: 99%

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Fazinić

Mandić

Kavčič

et al. 2011

J. Anal. At. Spectrom.

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Large database of high resolution Kb X-ray emission spectra of selected 3d metal (Ti, V, Cr, Mn) compounds obtained after excitation by 2 and 3 MeV proton beams have been built. Analysis of (relative) positions and intensities of Kb 00 and Kb 2,5 X-ray contributions as a function of chemical and structural properties of analyzed 3d metal compounds have been performed. Two independent experiments employing wavelength dispersive spectrometers with different experimental resolutions (8.1 eV versus 2.8 eV for the case of Cr Kb 1,3 line FWHM) were performed in order to exclude any possible effect of the experimental resolution on the extracted values. A simple parametrization of Kb 00 and Kb 2,5 X-rays' relative positions and intensities over the range of 3d metal compounds with various oxidation states, a wide range of metal-ligand bond lengths, and selected 3d metals, was performed. Results of our parametrization were compared critically with other experimental and theoretical values available in the literature. The parametrization obtained in this work could be used for chemical and structural speciation of 3d metal compounds and for improved interpretation of K X-ray spectra of 3d transition metal compounds measured by solid state detectors.

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Experimental K-shell fluorescence cross sections for elements in the atomic number range 16 ≤ Z ≤ 92 by photon impact at various energies

Amari,

Kahoul,

Sampaio

et al. 2024

Atomic Data and Nuclear Data Tables

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Influence of chemical effect on the K-shell X-ray production cross-sections and radiative Auger ratios of Zn complexes

Cited by 8 publications

References 49 publications

Influence of chemical environment on the analysis of X-ray spectra of thick pellet samples containing 3d transition metal compounds

Influence of chemical environment on the analysis of X-ray spectra of thick pellet samples containing 3d transition metal compounds

Parametrization of Kβ′′ and Kβ2,5 X-ray contributions in Kβ spectra of 3d transition metal compounds

Experimental K-shell fluorescence cross sections for elements in the atomic number range 16 ≤ Z ≤ 92 by photon impact at various energies

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