Self-radiation damage and recovery in Pu-doped zircon
作者:
W.J. Weber,
期刊:
Radiation Effects and Defects in Solids
(Taylor Available online 1991)
卷期:
Volume 115,
issue 4
页码: 341-349
ISSN:1042-0150
年代: 1991
DOI:10.1080/10420159108220580
出版商: Taylor & Francis Group
关键词: Alpha decay;amorphization;lattice defects;recrystallization;swelling;zircon
数据来源: Taylor
摘要:
The effects of self-radiation damage due to alpha decay was studied as a function of cumulative decay events in synthetic zircon doped with238Pu. The density of the Pu-doped zircon decreased exponentially with dose to a value corresponding to a density change of 14.2% at saturation. The initially crystalline material became fully X-ray amorphous at a dose of 6.7 × 1018alpha decays/g. Isochronal annealing indicated that recovery associated with recrystallization of amorphous zircon occurs in two stages, with estimated activation energies of 5.1 ± 0.2 and 6.6 ± 0.3 eV. These results are in good agreement with behavior observed in studies of self-radiation damage over geologic time in natural zircons.
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