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Numerical description of photoelectric absorption coefficients for fundamental parameter programs
Author(s) -
Ebel Horst,
Svagera Robert,
Ebel Maria F.,
Shaltout Abdallah,
Hubbell John H.
Publication year - 2003
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.667
Subject(s) - photoelectric effect , absorption edge , attenuation , computational physics , absorption (acoustics) , scattering , attenuation coefficient , incoherent scatter , atomic physics , optics , physics , mathematics , quantum mechanics , band gap
After a systematic analysis of different databases and a comparison with empirical data, we decided to describe photoelectric absorption coefficients, coherent and incoherent scattering coefficients and mass attenuation coefficients in the energy range from 1 to 300 keV for elements from Z = 1 to 94 by a modified version of Scofield's tables in combination with scattering coefficients from Elam et al. Modifications include check and correction of edge positions, description of M 4 ‐ and M 5 ‐ranges of elements from promethium upwards by sawtooth responses and reduction of data by introduction of least‐squares fits of fifth order to Scofield's and Elam et al. 's numerical data. Our database was developed especially for application in fundamental parameter programs for quantitative x‐ray analysis (XRFA, EPMA, XPS and TEY). Copyright © 2003 John Wiley & Sons, Ltd.