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Calculation of X-Ray Fluorescence Cross Sections for K and L Shells

Published online by Cambridge University Press:  06 March 2019

M. O. Krause ,
E. Ricci ,
C. J. Sparks Jr.  and
C. W. Nestor Jr.
M. O. Krause
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
E. Ricci
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
C. J. Sparks Jr.
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
C. W. Nestor Jr.
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
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Abstract

Exact expressions are given for the K and L x-ray fluorescence cross sections. Hole transfer between the L subshells is taken into account and shown to lead to a substantial enhancement of the cross sections for x rays of the L2 and L3 emission series. Absolute values of Kα and Lα cross sections are calculated for all elements and four excitation energies, namely GeK ≙ 10.0 keV, MoKα ≙ 17.44 keV, AgK ≙ 22.5 keV and Am 241 ≙ 59.6 keV.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 21: Twenty-Sixth Annual Conference on Applications of X-ray Analysis, August 3-5, 1977 , 1977 , pp. 119 - 127
Copyright
Copyright © International Centre for Diffraction Data 1977

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Footnotes

†

Computer Sciences Division of UCND at ORNL.

*

Research sponsored by the Division of Physical Research of the U.S. Energy Research and Development Administration under contract with Union Carbide Corporation.

References

1. Scofield, J.H., “Theoretical Photoionization Cross Sections from 1 to 1500 keV,” Lawrence Livermore Laboratory Report UCRL-51326 (1973).Google Scholar
2. Scofield, J.H., “Exchange Corrections of K X-Ray Emission Rates,” Phys. Rev. A9 , 1041–1049 (1974); “Hartree-Fock Values of L X-Ray Emission Rates,” Phys. Rev. A10, 1507-1510 (1974).Google Scholar
3. Krause, M. O., “Atomic Radiative and Radiationless Yields for K and L Shells” (submitted to At. Data Nucl. Data Tables).Google Scholar
4. Sparks, C.J. Jr., “Quantitative X-Ray Fluorescence Analysis Using Fundamental Parameters,” Adv. X-Ray Analysis 19, 19–52 (1976).Google Scholar
5. Krause, M. O., Nestor, C.W. Jr., Sparks, C.J. Jr., and Ricci, E., “X-Ray Fluorescence Cross Sections” (to be published).Google Scholar
6. Krause, M. O., Wuilleumier, F., Nestor, C. W. Jr., “Interpretation of the L X-Ray Emission Spectrum of Zr,” Phys. Rev. A6, 871 (1972).Google Scholar