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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)

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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.

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)

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