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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 59, Iss. 7 — Jul. 1, 1969
  • pp: 848–848

Measured Light-Emission Efficiency and Quantum Yield for X-Ray Screens and Phosphors

F. GRUM, L. F. COSTA, and J. L. DONOVAN  »View Author Affiliations


JOSA, Vol. 59, Issue 7, pp. 848-848 (1969)
http://dx.doi.org/10.1364/JOSA.59.000848


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Abstract

The luminescence emission spectra of commercial CaWO4 and BaSO4:Pb phosphors and screens have been measured for excitation with a known x-ray spectrum at 40 kVp. The emission efficiency and quantum yield have been determined. Changes have been observed in the ultraviolet reflection spectrum after the phosphors had received large x-ray exposures. The light emission of these phosphors, when exposed to x-ray excitation, has been studied as a function of irradiation time.

Citation
F. GRUM, L. F. COSTA, and J. L. DONOVAN, "Measured Light-Emission Efficiency and Quantum Yield for X-Ray Screens and Phosphors," J. Opt. Soc. Am. 59, 848-848 (1969)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-59-7-848


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References

  1. J. H. Hartman, Fortschr. Röntgenstrahlen 43, 758 (1931).
  2. M. B. Hodgson, Phys. Rev. 12, 431 (1918).
  3. G. W. Stanwix and L. Mullins, Phot. J. 86B, 38 (1946).
  4. R. H. Herz, Brit. J. Appl. Phys. 7, 182 (1956).
  5. J. W. Coltman E. G. Ebbinghausen, and W. Altar, J. Appl. Phys. 18, 530 (1947).
  6. L. F. Costa, F. Grum, and D. J. Paine, in Abstracts of Papers. 156th National Meeting, American Chemical Soc. (Craftsman Press, Inc., Bladensburg, Md., 1968), Phys. p. 46.

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