Response of zircon to electron and Ne{sup +} irradiation

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Description

Zircon (ZrSiO{sub 4}) is an actinide host phase in vitreous ceramic nuclear waste forms and a potential host phase for the disposition of excess weapons plutonium. In the present work, the effects of 800 and 900 keV electron and 1 MeV Ne{sup +} irradiations on the structure of single crystals of ZrSiO{sub 4} have been investigated. The microstructural evolution during the irradiations was studied in situ using a high-voltage electron microscope interfaced to an ion accelerator at Argonne National Laboratory. The results indicate that electron irradiation at 15 K cannot amorphize ZrSiO{sub 4} even at fluences an order of magnitude ... continued below

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6 p.

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Devanathan, R.; Weber, W.J. & Boatner, L.A. December 31, 1997.

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Description

Zircon (ZrSiO{sub 4}) is an actinide host phase in vitreous ceramic nuclear waste forms and a potential host phase for the disposition of excess weapons plutonium. In the present work, the effects of 800 and 900 keV electron and 1 MeV Ne{sup +} irradiations on the structure of single crystals of ZrSiO{sub 4} have been investigated. The microstructural evolution during the irradiations was studied in situ using a high-voltage electron microscope interfaced to an ion accelerator at Argonne National Laboratory. The results indicate that electron irradiation at 15 K cannot amorphize ZrSiO{sub 4} even at fluences an order of magnitude higher than that required for amorphization by 1.5 MeV Kr{sup +} ions. However, the material is readily amorphized by 1 MeV Ne{sup +} irradiation at 15 K. The temperature dependence of this amorphization is discussed in light of previous studies of radiation damage in ZrSiO{sub 4}.

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6 p.

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INIS; OSTI as DE98001933

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  • 1997 fall meeting of the Materials Research Society, Boston, MA (United States), 1-5 Dec 1997

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  • Other: DE98001933
  • Report No.: ORNL/CP--95762
  • Report No.: CONF-971201--
  • Grant Number: AC06-76RL01830;AC05-96OR22464
  • DOI: 10.2172/564254 | External Link
  • Office of Scientific & Technical Information Report Number: 564254
  • Archival Resource Key: ark:/67531/metadc697665

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  • December 31, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 7, 2016, 2:11 p.m.

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Devanathan, R.; Weber, W.J. & Boatner, L.A. Response of zircon to electron and Ne{sup +} irradiation, report, December 31, 1997; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc697665/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.