Self-radiation damage and recovery in Pu-doped zircon
- 1 January 1991
- journal article
- research article
- Published by Taylor & Francis in Radiation Effects and Defects in Solids
- Vol. 115 (4) , 341-349
- https://doi.org/10.1080/10420159108220580
Abstract
The effects of self-radiation damage due to alpha decay was studied as a function of cumulative decay events in synthetic zircon doped with 238Pu. 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 × 1018 alpha 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.Keywords
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