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Self-Radiation-Induced Anisotropic Structure Damage in 244Cm-Doped Orthophosphate LuPO4+

Published online by Cambridge University Press:  10 February 2011

G. K. Liu ,
J. S. Luo ,
S. T. Li ,
C.-K. Loong ,
M. M. Abraham ,
J. V. Beitz ,
J. K. Bates  and
L. A. Boatner
G. K. Liu
Affiliation:
Argonne National Laboratory, Argonne, IL 60439, USA
J. S. Luo
Affiliation:
Argonne National Laboratory, Argonne, IL 60439, USA
S. T. Li
Affiliation:
Argonne National Laboratory, Argonne, IL 60439, USA
C.-K. Loong
Affiliation:
Argonne National Laboratory, Argonne, IL 60439, USA
M. M. Abraham
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
J. V. Beitz
Affiliation:
Argonne National Laboratory, Argonne, IL 60439, USA
J. K. Bates
Affiliation:
Argonne National Laboratory, Argonne, IL 60439, USA
L. A. Boatner
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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Abstract

We have conducted a series of experiments using laser spectroscopy and analytic electron microscopy (AEM) to study the microscopic effects of radiation damage in single crystals of LuPO4 doped with 244Cm3+ ions. The crystals (body-centered tetragonal, zircon-type structure) were grown in 1980 using a flux method with an initial 244Cm(t1/2 =18.1 y) concentration of ∼1% by weight. The dimensions of the single crystals of Cm3+:LuPO4 are about 0.5×1.0×4.0 mm3. After 17 years, the crystals are no longer transparent. Dark brown to gray straps along the crystal c-axis are observable under an optical microscope. Macroscopic fractures are not obvious on the natural surfaces of the a- and b-planes. However, due to alpha-particle emission of 244Cm, significant microscopic structural damage, including microscopic cavities, has accumulated in this end member of the xenotime minerals

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 921
Copyright
Copyright © Materials Research Society 1998

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Footnotes

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Work at Argonne National Laboratory performed under the auspices of the Office of Basic Energy Science, Division of Chemical Sciences, US Department of Energy under contract number W-31-109-ENG-38

References

REFERENCES

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