L-shell x-ray production cross sections for light ions on Sm, Yb, and Pb

Tom J. Gray, G. M. Light, R. K. Gardner, and F. D. McDaniel
Phys. Rev. A 12, 2393 – Published 1 December 1975
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Abstract

L-shell x-ray production cross sections for the Ll, Lα1,2, Lγ1, and Lγ2,3,(6) have been measured for H1, He4, and Li7 on Yb and Pb and for He4 and Li7 on Sm. The energy ranges for the incident-ion species were 0.3 to 2.4 MeV/amu for H1, 0.15 to 4.4 MeV/amu for He4, and 0.9 to 3.0 MeV/amu for Li7. Comparisons of the Lα1,2, Lγ1, and Lγ2,3,(6) x-ray production cross-section data have been made to the predictions of the plane-wave Born approximation (PWBA) and the PWBA with corrections for Coulomb deflection and/or binding-energy effects. The comparisons show that for the individual x-ray production cross sections, there are problems associated with the binding-energy correction calculations for the Lγ1 and Lγ2,3 x-ray data. Furthermore, measurements of the ratio of Lα1,2 to Lγ2,3 x-ray intensities do not support the use of an increased effective binding energy in the PWBA formulation.

  • Received 11 August 1975

DOI:https://doi.org/10.1103/PhysRevA.12.2393

©1975 American Physical Society

Authors & Affiliations

Tom J. Gray*, G. M. Light, R. K. Gardner, and F. D. McDaniel

  • Regional Nuclear Physics Laboratory, Department of Physics, North Texas State University, Denton, Texas 76203

  • *Present address: Department of Physics, Kansas State University, Manhattan, Kansas 66506, on leave from North Texas State University.

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Vol. 12, Iss. 6 — December 1975

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