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Production Efficiencies of X-Ray Emission Spectra by Proton Bombardment

Published online by Cambridge University Press:  06 March 2019

A. A. Sterk ,
C. L. Marks  and
W. P. Saylor
A. A. Sterk
Affiliation:
American Machine & Foundry Company Alexandria, Virginia
C. L. Marks
Affiliation:
American Machine & Foundry Company Alexandria, Virginia
W. P. Saylor
Affiliation:
American Machine & Foundry Company Alexandria, Virginia
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Abstract

Production efficiencies for the excitation of characteristic soft X-ray emission spectra by proton bombardment were investigated. Results were obtained for K-, L-, and M-shell lines of various elements as a function of proton energies ranging up to 100 keV.

For comparison putposes, helium, nitrogen, and argon ions also were accelerated and used as bombarding particles to yield efficiency data for some of the same spectral lines.

The data demonstrate that:

  • 1. The production efficiencies of spectral lines excited by protons are, in the first approximation, dependent on wavelength only and are independent of the atomic shell with which they are associated.

  • 2. Production efficiencies increase with the atomic weight of the bombarding ions for some of the spectral lines investigated.

X-ray generation by proton bombardment is a powerful method for producing high-intensity monochromatic radiation for wavelengths above approximately 10 Å, The same technique can be used for analytical purposes to determine the concentration of low atomic number elements.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 10: Fifteenth Annual Conference on Applications of X-ray Analysis, August 10-12, 1966 , 1966 , pp. 399 - 408
Copyright
Copyright © International Centre for Diffraction Data 1966

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References

1. Sterk, A. A., “X-Ray Generation by Proton Bombardment,” Advances in X-Ray Analysis, Vol. 8, Plenum Press, New York, 1965, pp. 189–197.Google Scholar
2. Khan, J. M. and Potter, D. L., “Characteristic if-Shell X-Ray Production in Magnesium, Aluminum, and Copper by 60- to 500-keV Protons,” Phys. Rev. 133: A890, 1964.Google Scholar
3. Khan, J. M., Potter, D. L., and Worley, R. D., “Studies in X-Ray Production by Proton Bombardment of C, Mg, At, Nd, Sm, Gd, Tg, Tb, Dy, and Ho,” Phys. Rev. 139: A1735, 1965.Google Scholar
4. Jopson, R. C., Mark, H., and Swift, C. D., “Production of Characteristic X-Rays by Low-Energy Protons,” Phys. Rev. 127: 1612, 1962.Google Scholar