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

  • M. O. Krause (a1), E. Ricci (a1), C. J. Sparks (a1) and C. W. Nestor (a1)

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.

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Computer Sciences Division of UCND at ORNL.

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

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References

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1. Scofield, J.H., “Theoretical Photoionization Cross Sections from 1 to 1500 keV,” Lawrence Livermore Laboratory Report UCRL-51326 (1973).
2. Scofield, J.H., “Exchange Corrections of K X-Ray Emission Rates,” Phys. Rev. A9 , 10411049 (1974); “Hartree-Fock Values of L X-Ray Emission Rates,” Phys. Rev. A10, 1507-1510 (1974).
3. Krause, M. O., “Atomic Radiative and Radiationless Yields for K and L Shells” (submitted to At. Data Nucl. Data Tables).
4. Sparks, C.J. Jr., “Quantitative X-Ray Fluorescence Analysis Using Fundamental Parameters,” Adv. X-Ray Analysis 19, 1952 (1976).
5. Krause, M. O., Nestor, C.W. Jr., Sparks, C.J. Jr., and Ricci, E., “X-Ray Fluorescence Cross Sections” (to be published).
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).

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

  • M. O. Krause (a1), E. Ricci (a1), C. J. Sparks (a1) and C. W. Nestor (a1)

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