NDLI: Rare Earth Phosphors and Scintillators

Content Provider	IEEE Xplore Digital Library
Author	Buchanan, R. A. Wickersheim, K. A.
Copyright Year	1963
Abstract	Luminescent rare earth compounds are receiving renewed attention as a result of their successful application as phosphors for color television and lighting and as crystals for solid state lasers. The compounds of practical interest are hardy materials, frequently simple or complex oxides in which the rare earth activator occurs in the trivalent state. We report here the results of a partially completed survey of electron- and x-ray-stimulated luminescence of the rare earths in selected oxide hosts, on the basis of which it is possible to draw preliminary conclusions regarding the suitability of such materials for scintillation and other radiation detection and measurement applications. The luminescent compounds fall into two categories. Materials of the first category exhibit the sharp line spectra characteristic of transitions within the 4f electron shell. Efficiencies of materials in this category are high but decay times range from microseconds to milliseconds. As a result, their greatest utility would seem to lie in imaging and energy conversion applications. Materials of the second category exhibit broad-band spectra. These spectra arise from either 5d to 4f transitions of the activator ions or from emission of the host itself. Decay times fall in the range from tens of nanoseconds to microseconds. Consequently, these materials have the greatest potential for scintillation counting application. The best materials from each of the classes are discussed.
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	95
Ending Page	101
Page Count	7
File Size	1036579
File Format	PDF
ISSN	00189499
Volume Number	15
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1968-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phosphors TV Crystals Solid lasers Crystalline materials Optical materials Luminescence Radiation detectors Electrons Energy conversion
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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