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Alpha Decay Self-Damage in Cubic and Monoclinic Zirconolite*

Published online by Cambridge University Press:  15 February 2011

F. W. Clinard Jr., ,
C. C. Land ,
D. E. Peterson ,
D. L. Rohr  and
R. B. Roof
F. W. Clinard Jr.,
Affiliation:
University of California, Los Alamos National Laboratory, Los Alamos, NM 87545,USA
C. C. Land
Affiliation:
University of California, Los Alamos National Laboratory, Los Alamos, NM 87545,USA
D. E. Peterson
Affiliation:
University of California, Los Alamos National Laboratory, Los Alamos, NM 87545,USA
D. L. Rohr
Affiliation:
University of California, Los Alamos National Laboratory, Los Alamos, NM 87545,USA
R. B. Roof
Affiliation:
University of California, Los Alamos National Laboratory, Los Alamos, NM 87545,USA
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Abstract

Samples of primarily-monoclinic 238 Pu-doped zirconolite were stored at ambient temperature to allow accumulation of alpha decay self-damage to a dose of 6 × 1024 α/m3 (equivalent to a SYNROC age of ֮103 y). Bulk swelling reached 2.3 vol% with no tendency toward saturation, a damage response similar to that observed for cubic Pu-doped zirconolite. X-ray volumetric swelling at 4 × 1024 ֮/m3 was 1 vol%, considerably less than that for the cubic material. Changes in cell dimensions differed significantly from those reported by others for a monoclinic natural mineral. Extensive microcracking was observed, and is attributed at least partially to swelling differences between the matrix and minor phases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 6: Symposium D – Scientific Basis for Nuclear Waste Management IV , 1981 , 405
Copyright
Copyright © Materials Research Society 1982

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Footnotes

*

Work performed under the auspices of the U. S. Department of Energy.

References

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