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Cathodoluminescence of Ce, U and Pu in a Garnet Host Phase

Published online by Cambridge University Press:  10 February 2011

M.V. Zamoryanskaya  and
B.E. Burakov
M.V. Zamoryanskaya
Affiliation:
V.G.Khlopin Radium Institute, 28, 2-nd Murinskiy ave., St.Petersburg, 194021, Russia, fax: (7)-(812)-346-1129
B.E. Burakov
Affiliation:
V.G.Khlopin Radium Institute, 28, 2-nd Murinskiy ave., St.Petersburg, 194021, Russia, fax: (7)-(812)-346-1129; e-mail: [email protected]
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Abstract

Ceramic materials based on garnet, (Y,Gd,An,…)3(Al,Ga,An,…)5O12 and perovskite (Y,Gd,An,…)(Al,Ga,An,…)O3 structures have been proposed for the immobilization of weapons-grade actinide-containing waste materials with complex chemical compositions. Cathodoluminescence (CL) images and emission spectra of synthetic garnet and perovskite crystals containing Ce, U and Pu were studied. It was determined that Pu3+ incorporated into the garnet matrix has characteristic CL emission bands at 1.9 and 1.6 eV. The loading capacity of the garnet lattice for Pu4+ incorporation is significantly higher than for Pu3+ and similar to U4+. The maximum amount of Pu3+ that may be incorporated into the garnet structure experimentally is 0.3 wt.% in comparison with 5.3 wt.% for Pu4+. The CL emission spectra of Ce3+ in different materials is a characteristic property and can be used for identification of garnet and perovskite phases into the multiphase ceramic matrices simultaneously with microprobe analysis

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 437
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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