Numerical description of photoelectric absorption coefficients for fundamental parameter programs

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 M4- and M5-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.

[1]  Alfred Z. Msezane,et al.  Relative intensities in photoelectron spectroscopy of atoms and molecules , 1976 .

[2]  James H. Scofield,et al.  X-Ray Attenuation Cross Sections for Energies 100 eV to 100 keV and Elements Z = 1 to Z = 92 , 1988 .

[3]  D. R. Penn,et al.  Calculations of electron inelastic mean free paths. III. Data for 15 inorganic compounds over the 50–2000 eV range , 1991 .

[4]  D. R. Penn,et al.  Calculations of electorn inelastic mean free paths. II. Data for 27 elements over the 50–2000 eV range , 1991 .

[5]  B. L. Henke,et al.  X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92 , 1993 .

[6]  D. R. Penn,et al.  Calculations of Electron Inelastic Mean Free Paths (IMFPs) IV. Evaluation of Calculated IMFPs and of the Predictive IMFP Formula TPP-2 for Electron Energies between 50 and 2000 eV , 1993 .

[7]  Christopher T. Chantler,et al.  Theoretical Form Factor, Attenuation, and Scattering Tabulation for Z=1–92 from E=1–10 eV to E=0.4–1.0 MeV , 1995 .

[8]  M. Ertugrul,et al.  Direct determination of total atomic attenuation, total atomic photoelectric and total atomic scattering cross sections of Gd, Tb, Dy and Er at 60 keV , 1996 .

[9]  B. Kerur,et al.  Photoelectric Cross-Sections: Comparison Between Experimental and Renormalized and Unrenormalized Theoretical Values , 1997 .

[10]  A. Karabulut,et al.  Fast measurement of total atomic attenuation, total atomic photoelectric and total atomic scattering cross sections in the range 58⩽Z⩽68 using radioisotope X-ray fluorescence , 1999 .

[11]  John H. Hubbell,et al.  Compilation of photon cross-sections: some historical remarks and current status† , 1999 .

[12]  Zwi Barnea,et al.  Measurement of the x-ray mass attenuation coefficient of copper using 8.85-20 keV synchrotron radiation , 2001 .

[13]  M. Angelone,et al.  Measurement of the mass attenuation coefficient for elemental materials in the range 6 < or = Z < or = 82 using X-rays from 13 up to 50 kev. , 2001, Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine.

[14]  N. Saito,et al.  Photoabsorption cross-section for Kr in the sub-keV energy region , 2002 .

[15]  S. Krishnaveni,et al.  Studies on Photon Interaction Around the K-Edge of Some Elements , 2002 .

[16]  John R. Sieber,et al.  A new atomic database for X-ray spectroscopic calculations , 2002 .